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83339 commits

Author SHA1 Message Date
Linus Torvalds
148a650476 pci-v5.18-changes
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Merge tag 'pci-v5.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull pci updates from Bjorn Helgaas:
 "Enumeration:
   - Move the VGA arbiter from drivers/gpu to drivers/pci because it's
     PCI-specific, not GPU-specific (Bjorn Helgaas)
   - Select the default VGA device consistently whether it's enumerated
     before or after VGA arbiter init, which fixes arches that enumerate
     PCI devices late (Huacai Chen)

  Resource management:
   - Support BAR sizes up to 8TB (Dongdong Liu)

  PCIe native device hotplug:
   - Fix "Command Completed" tracking to avoid spurious timouts when
     powering off empty slots (Liguang Zhang)
   - Quirk Qualcomm devices that don't implement Command Completed
     correctly, again to avoid spurious timeouts (Manivannan Sadhasivam)

  Peer-to-peer DMA:
   - Add Intel 3rd Gen Intel Xeon Scalable Processors to whitelist
     (Michael J. Ruhl)

  APM X-Gene PCIe controller driver:
   - Revert generic DT parsing changes that broke some machines in the
     field (Marc Zyngier)

  Freescale i.MX6 PCIe controller driver:
   - Allow controller probe to succeed even when no devices currently
     present to allow hot-add later (Fabio Estevam)
   - Enable power management on i.MX6QP (Richard Zhu)
   - Assert CLKREQ# on i.MX8MM so enumeration doesn't hang when no
     device is connected (Richard Zhu)

  Marvell Aardvark PCIe controller driver:
   - Fix MSI and MSI-X support (Marek Behún, Pali Rohár)
   - Add support for ERR and PME interrupts (Pali Rohár)

  Marvell MVEBU PCIe controller driver:
   - Add DT binding and support for "num-lanes" (Pali Rohár)
   - Add support for INTx interrupts (Pali Rohár)

  Microsoft Hyper-V host bridge driver:
   - Avoid unnecessary hypercalls when unmasking IRQs on ARM64 (Boqun
     Feng)

  Qualcomm PCIe controller driver:
   - Add SM8450 DT binding and driver support (Dmitry Baryshkov)

  Renesas R-Car PCIe controller driver:
   - Help the controller get to the L1 state since the hardware can't do
     it on its own (Marek Vasut)
   - Return PCI_ERROR_RESPONSE (~0) for reads that fail on PCIe (Marek
     Vasut)

  SiFive FU740 PCIe controller driver:
   - Drop redundant '-gpios' from DT GPIO lookup (Ben Dooks)
   - Force 2.5GT/s for initial device probe (Ben Dooks)

  Socionext UniPhier Pro5 controller driver:
   - Add NX1 DT binding and driver support (Kunihiko Hayashi)

  Synopsys DesignWare PCIe controller driver:
   - Restore MSI configuration so MSI works after resume (Jisheng
     Zhang)"

* tag 'pci-v5.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (94 commits)
  x86/PCI: Add #includes to asm/pci_x86.h
  PCI: ibmphp: Remove unused assignments
  PCI: cpqphp: Remove unused assignments
  PCI: fu740: Remove unused assignments
  PCI: kirin: Remove unused assignments
  PCI: Remove unused assignments
  PCI: Declare pci_filp_private only when HAVE_PCI_MMAP
  PCI: Avoid broken MSI on SB600 USB devices
  PCI: fu740: Force 2.5GT/s for initial device probe
  PCI: xgene: Revert "PCI: xgene: Fix IB window setup"
  PCI: xgene: Revert "PCI: xgene: Use inbound resources for setup"
  PCI: imx6: Assert i.MX8MM CLKREQ# even if no device present
  PCI: imx6: Invoke the PHY exit function after PHY power off
  PCI: rcar: Use PCI_SET_ERROR_RESPONSE after read which triggered an exception
  PCI: rcar: Finish transition to L1 state in rcar_pcie_config_access()
  PCI: dwc: Restore MSI Receiver mask during resume
  PCI: fu740: Drop redundant '-gpios' from DT GPIO lookup
  PCI/VGA: Replace full MIT license text with SPDX identifier
  PCI/VGA: Use unsigned format string to print lock counts
  PCI/VGA: Log bridge control messages when adding devices
  ...
2022-03-25 13:02:05 -07:00
Linus Torvalds
ebcb577aee gpio updates for v5.18-rc1
- new driver: gpio-en7523
 - dt-bindings: convertion of faraday,ftgpio010 to YAML, new compatible string
   in gpio-vf610 and a bugfix in an example
 - gpiolib core: several improvements and some code shrink
 - documentation: convert all public docs into kerneldoc format
 - set IRQ bus token in gpio-crystalcove (addresses a debugfs issue)
 - add a missing return value check for kstrdup() in gpio-merrifield
 - allow gpio-tps68470 to be built as module
 - more work on limiting usage of of_node in GPIO drivers
 - several sysfs interface improvements
 - use SDPX in gpio-ts4900
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Merge tag 'gpio-updates-for-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "Relatively few updates for this release cycle. We have a single new
  driver and some minor changes in drivers, more work on limiting the
  usage of of_node in drivers and DT updates:

   - new driver: gpio-en7523

   - dt-bindings: convertion of faraday,ftgpio010 to YAML, new
     compatible string in gpio-vf610 and a bugfix in an example

   - gpiolib core: several improvements and some code shrink

   - documentation: convert all public docs into kerneldoc format

   - set IRQ bus token in gpio-crystalcove (addresses a debugfs issue)

   - add a missing return value check for kstrdup() in gpio-merrifield

   - allow gpio-tps68470 to be built as module

   - more work on limiting usage of of_node in GPIO drivers

   - several sysfs interface improvements

   - use SDPX in gpio-ts4900"

* tag 'gpio-updates-for-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: ts4900: Use SPDX header
  gpiolib: Use list_first_entry()/list_last_entry()
  gpiolib: sysfs: Simplify edge handling in the code
  gpiolib: sysfs: Move kstrtox() calls outside of the mutex lock
  gpiolib: sysfs: Move sysfs_emit() calls outside of the mutex lock
  gpiolib: make struct comments into real kernel docs
  dt-bindings: gpio: convert faraday,ftgpio01 to yaml
  dt-bindings: gpio: gpio-vf610: Add imx93 compatible string
  gpiolib: Simplify error path in gpiod_get_index() when requesting GPIO
  gpiolib: Use short form of ternary operator in gpiod_get_index()
  gpiolib: Introduce for_each_gpio_desc_with_flag() macro
  gpio: Add support for Airoha EN7523 GPIO controller
  dt-bindings: arm: airoha: Add binding for Airoha GPIO controller
  dt-bindings: gpio: fix gpio-hog example
  gpio: tps68470: Allow building as module
  gpio: tegra: Get rid of duplicate of_node assignment
  gpio: altera-a10sr: Switch to use fwnode instead of of_node
  gpio: merrifield: check the return value of devm_kstrdup()
  gpio: crystalcove: Set IRQ domain bus token to DOMAIN_BUS_WIRED
2022-03-25 12:28:23 -07:00
Linus Torvalds
5e206459f6 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID updates from Jiri Kosina:

 - rework of generic input handling which ultimately makes the
   processing of tablet events more generic and reliable (Benjamin
   Tissoires)

 - fixes for handling unnumbered reports fully correctly in i2c-hid
   (Angela Czubak, Dmitry Torokhov)

 - untangling of intermingled code for sending and handling output
   reports in i2c-hid (Dmitry Torokhov)

 - Apple magic keyboard support improvements for newer models (José
   Expósito)

 - Apple T2 Macs support improvements (Aun-Ali Zaidi, Paul Pawlowski)

 - driver for Razer Blackwidow keyboards (Jelle van der Waa)

 - driver for SiGma Micro keyboards (Desmond Lim)

 - integration of first part of DIGImend patches in order to ultimately
   vastly improve Linux support of tablets (Nikolai Kondrashov, José
   Expósito)

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: (55 commits)
  HID: intel-ish-hid: Use dma_alloc_coherent for firmware update
  Input: docs: add more details on the use of BTN_TOOL
  HID: input: accommodate priorities for slotted devices
  HID: input: remove the need for HID_QUIRK_INVERT
  HID: input: enforce Invert usage to be processed before InRange
  HID: core: for input reports, process the usages by priority list
  HID: compute an ordered list of input fields to process
  HID: input: move up out-of-range processing of input values
  HID: input: rework spaghetti code with switch statements
  HID: input: tag touchscreens as such if the physical is not there
  HID: core: split data fetching from processing in hid_input_field()
  HID: core: de-duplicate some code in hid_input_field()
  HID: core: statically allocate read buffers
  HID: uclogic: Support multiple frame input devices
  HID: uclogic: Define report IDs before their descriptors
  HID: uclogic: Put version first in rdesc namespace
  HID: uclogic: Use "frame" instead of "buttonpad"
  HID: uclogic: Use different constants for frame report IDs
  HID: uclogic: Specify total report size to buttonpad macro
  HID: uclogic: Switch to matching subreport bytes
  ...
2022-03-25 12:22:16 -07:00
Linus Torvalds
1464677662 platform-drivers-x86 for v5.18-1
Highlights:
 - new drivers:
   - AMD Host System Management Port (HSMP)
   - Intel Software Defined Silicon
 - removed drivers (functionality folded into other drivers):
   - intel_cht_int33fe_microb
   - surface3_button
 - amd-pmc:
   - s2idle bug-fixes
   - Support for AMD Spill to DRAM STB feature
 - hp-wmi:
   - Fix SW_TABLET_MODE detection method (and other fixes)
   - Support omen thermal profile policy v1
 - serial-multi-instantiate:
   - Add SPI device support
   - Add support for CS35L41 amplifiers used in new laptops
 - think-lmi:
   - syfs-class-firmware-attributes Certificate authentication support
 - thinkpad_acpi:
   - Fixes + quirks
   - Add platform_profile support on AMD based ThinkPads
 - x86-android-tablets
   - Improve Asus ME176C / TF103C support
   - Support Nextbook Ares 8, Lenovo Tab 2 830 and 1050 tablets
 - Lots of various other small fixes and hardware-id additions
 
 The following is an automated git shortlog grouped by driver:
 
 ACPI / scan:
  -  Create platform device for CS35L41
 
 ACPI / x86:
  -  Add support for LPS0 callback handler
 
 ALSA:
  -  hda/realtek: Add support for HP Laptops
 
 Add AMD system management interface:
  - Add AMD system management interface
 
 Add Intel Software Defined Silicon driver:
  - Add Intel Software Defined Silicon driver
 
 Documentation:
  -  syfs-class-firmware-attributes: Lenovo Certificate support
  -  Add x86/amd_hsmp driver
 
 ISST:
  -  Fix possible circular locking dependency detected
 
 Input:
  -  soc_button_array - add support for Microsoft Surface 3 (MSHW0028) buttons
 
 Merge remote-tracking branch 'pdx86/platform-drivers-x86-pinctrl-pmu_clk' into review-hans-gcc12:
  - Merge remote-tracking branch 'pdx86/platform-drivers-x86-pinctrl-pmu_clk' into review-hans-gcc12
 
 Merge tag 'platform-drivers-x86-serial-multi-instantiate-1' into review-hans:
  - Merge tag 'platform-drivers-x86-serial-multi-instantiate-1' into review-hans
 
 Replace acpi_bus_get_device():
  - Replace acpi_bus_get_device()
 
 amd-pmc:
  -  Only report STB errors when STB enabled
  -  Drop CPU QoS workaround
  -  Output error codes in messages
  -  Move to later in the suspend process
  -  Validate entry into the deepest state on resume
  -  uninitialized variable in amd_pmc_s2d_init()
  -  Set QOS during suspend on CZN w/ timer wakeup
  -  Add support for AMD Spill to DRAM STB feature
  -  Correct usage of SMU version
  -  Make amd_pmc_stb_debugfs_fops static
 
 asus-tf103c-dock:
  -  Make 2 global structs static
 
 asus-wmi:
  -  Fix regression when probing for fan curve control
 
 hp-wmi:
  -  support omen thermal profile policy v1
  -  Changing bios_args.data to be dynamically allocated
  -  Fix 0x05 error code reported by several WMI calls
  -  Fix SW_TABLET_MODE detection method
  -  Fix hp_wmi_read_int() reporting error (0x05)
 
 huawei-wmi:
  -  check the return value of device_create_file()
 
 i2c-multi-instantiate:
  -  Rename it for a generic serial driver name
 
 int3472:
  -  Add terminator to gpiod_lookup_table
 
 intel-uncore-freq:
  -  fix uncore_freq_common_init() error codes
 
 intel_cht_int33fe:
  -  Move to intel directory
  -  Drop Lenovo Yogabook YB1-X9x code
  -  Switch to DMI modalias based loading
 
 intel_crystal_cove_charger:
  -  Fix IRQ masking / unmasking
 
 lg-laptop:
  -  Move setting of battery charge limit to common location
 
 pinctrl:
  -  baytrail: Add pinconf group + function for the pmu_clk
 
 platform/dcdbas:
  -  move EXPORT_SYMBOL after function
 
 platform/surface:
  -  Remove Surface 3 Button driver
  -  surface3-wmi: Simplify resource management
  -  Replace acpi_bus_get_device()
  -  Reinstate platform dependency
 
 platform/x86/intel-uncore-freq:
  -  Split common and enumeration part
 
 platform/x86/intel/uncore-freq:
  -  Display uncore current frequency
  -  Use sysfs API to create attributes
  -  Move to uncore-frequency folder
 
 selftests:
  -  sdsi: test sysfs setup
 
 serial-multi-instantiate:
  -  Add SPI support
  -  Reorganize I2C functions
 
 spi:
  -  Add API to count spi acpi resources
  -  Support selection of the index of the ACPI Spi Resource before alloc
  -  Create helper API to lookup ACPI info for spi device
  -  Make spi_alloc_device and spi_add_device public again
 
 surface:
  -  surface3_power: Fix battery readings on batteries without a serial number
 
 think-lmi:
  -  Certificate authentication support
 
 thinkpad_acpi:
  -  consistently check fan_get_status return.
  -  Don't use test_bit on an integer
  -  Fix compiler warning about uninitialized err variable
  -  clean up dytc profile convert
  -  Add PSC mode support
  -  Add dual fan probe
  -  Add dual-fan quirk for T15g (2nd gen)
  -  Fix incorrect use of platform profile on AMD platforms
  -  Add quirk for ThinkPads without a fan
 
 tools arch x86:
  -  Add Intel SDSi provisiong tool
 
 touchscreen_dmi:
  -  Add info for the RWC NANOTE P8 AY07J 2-in-1
 
 x86-android-tablets:
  -  Depend on EFI and SPI
  -  Lenovo Yoga Tablet 2 830/1050 sound support
  -  Workaround Lenovo Yoga Tablet 2 830/1050 poweroff hang
  -  Add Lenovo Yoga Tablet 2 830 / 1050 data
  -  Fix EBUSY error when requesting IOAPIC IRQs
  -  Minor charger / fuel-gauge improvements
  -  Add Nextbook Ares 8 data
  -  Add IRQ to Asus ME176C accelerometer info
  -  Add lid-switch gpio-keys pdev to Asus ME176C + TF103C
  -  Add x86_android_tablet_get_gpiod() helper
  -  Add Asus ME176C/TF103C charger and fuelgauge props
  -  Add battery swnode support
  -  Trivial typo fix for MODULE_AUTHOR
  -  Fix the buttons on CZC P10T tablet
  -  Constify the gpiod_lookup_tables arrays
  -  Add an init() callback to struct x86_dev_info
  -  Add support for disabling ACPI _AEI handlers
  -  Correct crystal_cove_charger module name
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Merge tag 'platform-drivers-x86-v5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver updates from Hans de Goede:
  "New drivers:
    - AMD Host System Management Port (HSMP)
    - Intel Software Defined Silicon

  Removed drivers (functionality folded into other drivers):
    - intel_cht_int33fe_microb
    - surface3_button

  amd-pmc:
    - s2idle bug-fixes
    - Support for AMD Spill to DRAM STB feature

  hp-wmi:
    - Fix SW_TABLET_MODE detection method (and other fixes)
    - Support omen thermal profile policy v1

  serial-multi-instantiate:
    - Add SPI device support
    - Add support for CS35L41 amplifiers used in new laptops

  think-lmi:
    - syfs-class-firmware-attributes Certificate authentication support

  thinkpad_acpi:
    - Fixes + quirks
    - Add platform_profile support on AMD based ThinkPads

  x86-android-tablets:
    - Improve Asus ME176C / TF103C support
    - Support Nextbook Ares 8, Lenovo Tab 2 830 and 1050 tablets

  Lots of various other small fixes and hardware-id additions"

* tag 'platform-drivers-x86-v5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (60 commits)
  platform/x86: think-lmi: Certificate authentication support
  Documentation: syfs-class-firmware-attributes: Lenovo Certificate support
  platform/x86: amd-pmc: Only report STB errors when STB enabled
  platform/x86: amd-pmc: Drop CPU QoS workaround
  platform/x86: amd-pmc: Output error codes in messages
  platform/x86: amd-pmc: Move to later in the suspend process
  ACPI / x86: Add support for LPS0 callback handler
  platform/x86: thinkpad_acpi: consistently check fan_get_status return.
  platform/x86: hp-wmi: support omen thermal profile policy v1
  platform/x86: hp-wmi: Changing bios_args.data to be dynamically allocated
  platform/x86: hp-wmi: Fix 0x05 error code reported by several WMI calls
  platform/x86: hp-wmi: Fix SW_TABLET_MODE detection method
  platform/x86: hp-wmi: Fix hp_wmi_read_int() reporting error (0x05)
  platform/x86: amd-pmc: Validate entry into the deepest state on resume
  platform/x86: thinkpad_acpi: Don't use test_bit on an integer
  platform/x86: thinkpad_acpi: Fix compiler warning about uninitialized err variable
  platform/x86: thinkpad_acpi: clean up dytc profile convert
  platform/x86: x86-android-tablets: Depend on EFI and SPI
  platform/x86: amd-pmc: uninitialized variable in amd_pmc_s2d_init()
  platform/x86: intel-uncore-freq: fix uncore_freq_common_init() error codes
  ...
2022-03-25 12:14:39 -07:00
Trond Myklebust
421ab1be43 SUNRPC: Do not dereference non-socket transports in sysfs
Do not cast the struct xprt to a sock_xprt unless we know it is a UDP or
TCP transport. Otherwise the call to lock the mutex will scribble over
whatever structure is actually there. This has been seen to cause hard
system lockups when the underlying transport was RDMA.

Fixes: b49ea673e1 ("SUNRPC: lock against ->sock changing during sysfs read")
Cc: stable@vger.kernel.org
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2022-03-25 13:22:58 -04:00
Linus Torvalds
29c8c18363 Merge branch 'akpm' (patches from Andrew)
Merge yet more updates from Andrew Morton:
 "This is the material which was staged after willystuff in linux-next.

  Subsystems affected by this patch series: mm (debug, selftests,
  pagecache, thp, rmap, migration, kasan, hugetlb, pagemap, madvise),
  and selftests"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (113 commits)
  selftests: kselftest framework: provide "finished" helper
  mm: madvise: MADV_DONTNEED_LOCKED
  mm: fix race between MADV_FREE reclaim and blkdev direct IO read
  mm: generalize ARCH_HAS_FILTER_PGPROT
  mm: unmap_mapping_range_tree() with i_mmap_rwsem shared
  mm: warn on deleting redirtied only if accounted
  mm/huge_memory: remove stale locking logic from __split_huge_pmd()
  mm/huge_memory: remove stale page_trans_huge_mapcount()
  mm/swapfile: remove stale reuse_swap_page()
  mm/khugepaged: remove reuse_swap_page() usage
  mm/huge_memory: streamline COW logic in do_huge_pmd_wp_page()
  mm: streamline COW logic in do_swap_page()
  mm: slightly clarify KSM logic in do_swap_page()
  mm: optimize do_wp_page() for fresh pages in local LRU pagevecs
  mm: optimize do_wp_page() for exclusive pages in the swapcache
  mm/huge_memory: make is_transparent_hugepage() static
  userfaultfd/selftests: enable hugetlb remap and remove event testing
  selftests/vm: add hugetlb madvise MADV_DONTNEED MADV_REMOVE test
  mm: enable MADV_DONTNEED for hugetlb mappings
  kasan: disable LOCKDEP when printing reports
  ...
2022-03-25 10:21:20 -07:00
Linus Torvalds
aa5b537b0e RISC-V Patches for the 5.18 Merge Window, Part 1
* Support for Sv57-based virtual memory.
 * Various improvements for the MicroChip PolarFire SOC and the
   associated Icicle dev board, which should allow upstream kernels to
   boot without any additional modifications.
 * An improved memmove() implementation.
 * Support for the new Ssconfpmf and SBI PMU extensions, which allows for
   a much more useful perf implementation on RISC-V systems.
 * Support for restartable sequences.
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Merge tag 'riscv-for-linus-5.18-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V updates from Palmer Dabbelt:

 - Support for Sv57-based virtual memory.

 - Various improvements for the MicroChip PolarFire SOC and the
   associated Icicle dev board, which should allow upstream kernels to
   boot without any additional modifications.

 - An improved memmove() implementation.

 - Support for the new Ssconfpmf and SBI PMU extensions, which allows
   for a much more useful perf implementation on RISC-V systems.

 - Support for restartable sequences.

* tag 'riscv-for-linus-5.18-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (36 commits)
  rseq/selftests: Add support for RISC-V
  RISC-V: Add support for restartable sequence
  MAINTAINERS: Add entry for RISC-V PMU drivers
  Documentation: riscv: Remove the old documentation
  RISC-V: Add sscofpmf extension support
  RISC-V: Add perf platform driver based on SBI PMU extension
  RISC-V: Add RISC-V SBI PMU extension definitions
  RISC-V: Add a simple platform driver for RISC-V legacy perf
  RISC-V: Add a perf core library for pmu drivers
  RISC-V: Add CSR encodings for all HPMCOUNTERS
  RISC-V: Remove the current perf implementation
  RISC-V: Improve /proc/cpuinfo output for ISA extensions
  RISC-V: Do no continue isa string parsing without correct XLEN
  RISC-V: Implement multi-letter ISA extension probing framework
  RISC-V: Extract multi-letter extension names from "riscv, isa"
  RISC-V: Minimal parser for "riscv, isa" strings
  RISC-V: Correctly print supported extensions
  riscv: Fixed misaligned memory access. Fixed pointer comparison.
  MAINTAINERS: update riscv/microchip entry
  riscv: dts: microchip: add new peripherals to icicle kit device tree
  ...
2022-03-25 10:11:38 -07:00
Linus Torvalds
1f1c153e40 powerpc updates for 5.18
- Enforce kernel RO, and implement STRICT_MODULE_RWX for 603.
 
  - Add support for livepatch to 32-bit.
 
  - Implement CONFIG_DYNAMIC_FTRACE_WITH_ARGS.
 
  - Merge vdso64 and vdso32 into a single directory.
 
  - Fix build errors with newer binutils.
 
  - Add support for UADDR64 relocations, which are emitted by some toolchains. This allows
    powerpc to build with the latest lld.
 
  - Fix (another) potential userspace r13 corruption in transactional memory handling.
 
  - Cleanups of function descriptor handling & related fixes to LKDTM.
 
 Thanks to: Abdul Haleem, Alexey Kardashevskiy, Anders Roxell, Aneesh Kumar K.V, Anton
 Blanchard, Arnd Bergmann, Athira Rajeev, Bhaskar Chowdhury, Cédric Le Goater, Chen
 Jingwen, Christophe JAILLET, Christophe Leroy, Corentin Labbe, Daniel Axtens, Daniel
 Henrique Barboza, David Dai, Fabiano Rosas, Ganesh Goudar, Guo Zhengkui, Hangyu Hua, Haren
 Myneni, Hari Bathini, Igor Zhbanov, Jakob Koschel, Jason Wang, Jeremy Kerr, Joachim
 Wiberg, Jordan Niethe, Julia Lawall, Kajol Jain, Kees Cook, Laurent Dufour, Madhavan
 Srinivasan, Mamatha Inamdar, Maxime Bizon, Maxim Kiselev, Maxim Kochetkov, Michal
 Suchanek, Nageswara R Sastry, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Nour-eddine
 Taleb, Paul Menzel, Ping Fang, Pratik R. Sampat, Randy Dunlap, Ritesh Harjani, Rohan
 McLure, Russell Currey, Sachin Sant, Segher Boessenkool, Shivaprasad G Bhat, Sourabh Jain,
 Thierry Reding, Tobias Waldekranz, Tyrel Datwyler, Vaibhav Jain, Vladimir Oltean, Wedson
 Almeida Filho, YueHaibing.
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Merge tag 'powerpc-5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Livepatch support for 32-bit is probably the standout new feature,
  otherwise mostly just lots of bits and pieces all over the board.

  There's a series of commits cleaning up function descriptor handling,
  which touches a few other arches as well as LKDTM. It has acks from
  Arnd, Kees and Helge.

  Summary:

   - Enforce kernel RO, and implement STRICT_MODULE_RWX for 603.

   - Add support for livepatch to 32-bit.

   - Implement CONFIG_DYNAMIC_FTRACE_WITH_ARGS.

   - Merge vdso64 and vdso32 into a single directory.

   - Fix build errors with newer binutils.

   - Add support for UADDR64 relocations, which are emitted by some
     toolchains. This allows powerpc to build with the latest lld.

   - Fix (another) potential userspace r13 corruption in transactional
     memory handling.

   - Cleanups of function descriptor handling & related fixes to LKDTM.

  Thanks to Abdul Haleem, Alexey Kardashevskiy, Anders Roxell, Aneesh
  Kumar K.V, Anton Blanchard, Arnd Bergmann, Athira Rajeev, Bhaskar
  Chowdhury, Cédric Le Goater, Chen Jingwen, Christophe JAILLET,
  Christophe Leroy, Corentin Labbe, Daniel Axtens, Daniel Henrique
  Barboza, David Dai, Fabiano Rosas, Ganesh Goudar, Guo Zhengkui, Hangyu
  Hua, Haren Myneni, Hari Bathini, Igor Zhbanov, Jakob Koschel, Jason
  Wang, Jeremy Kerr, Joachim Wiberg, Jordan Niethe, Julia Lawall, Kajol
  Jain, Kees Cook, Laurent Dufour, Madhavan Srinivasan, Mamatha Inamdar,
  Maxime Bizon, Maxim Kiselev, Maxim Kochetkov, Michal Suchanek,
  Nageswara R Sastry, Nathan Lynch, Naveen N. Rao, Nicholas Piggin,
  Nour-eddine Taleb, Paul Menzel, Ping Fang, Pratik R. Sampat, Randy
  Dunlap, Ritesh Harjani, Rohan McLure, Russell Currey, Sachin Sant,
  Segher Boessenkool, Shivaprasad G Bhat, Sourabh Jain, Thierry Reding,
  Tobias Waldekranz, Tyrel Datwyler, Vaibhav Jain, Vladimir Oltean,
  Wedson Almeida Filho, and YueHaibing"

* tag 'powerpc-5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (179 commits)
  powerpc/pseries: Fix use after free in remove_phb_dynamic()
  powerpc/time: improve decrementer clockevent processing
  powerpc/time: Fix KVM host re-arming a timer beyond decrementer range
  powerpc/tm: Fix more userspace r13 corruption
  powerpc/xive: fix return value of __setup handler
  powerpc/64: Add UADDR64 relocation support
  powerpc: 8xx: fix a return value error in mpc8xx_pic_init
  powerpc/ps3: remove unneeded semicolons
  powerpc/64: Force inlining of prevent_user_access() and set_kuap()
  powerpc/bitops: Force inlining of fls()
  powerpc: declare unmodified attribute_group usages const
  powerpc/spufs: Fix build warning when CONFIG_PROC_FS=n
  powerpc/secvar: fix refcount leak in format_show()
  powerpc/64e: Tie PPC_BOOK3E_64 to PPC_FSL_BOOK3E
  powerpc: Move C prototypes out of asm-prototypes.h
  powerpc/kexec: Declare kexec_paca static
  powerpc/smp: Declare current_set static
  powerpc: Cleanup asm-prototypes.c
  powerpc/ftrace: Use STK_GOT in ftrace_mprofile.S
  powerpc/ftrace: Regroup PPC64 specific operations in ftrace_mprofile.S
  ...
2022-03-25 09:39:36 -07:00
Christian König
64a8f92fd7 dma-buf: add dma_fence_unwrap v2
Add a general purpose helper to deep dive into dma_fence_chain/dma_fence_array
structures and iterate over all the fences in them.

This is useful when we need to flatten out all fences in those structures.

v2: some selftests cleanup, improved function naming and documentation

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220311110244.1245-1-christian.koenig@amd.com
2022-03-25 14:18:28 +01:00
Christian König
caaf2ae712 dma-buf: Add dma_fence_array_for_each (v2)
Add a helper to iterate over all fences in a dma_fence_array object.

v2 (Jason Ekstrand)
 - Return NULL from dma_fence_array_first if head == NULL.  This matches
   the iterator behavior of dma_fence_chain_for_each in that it iterates
   zero times if head == NULL.
 - Return NULL from dma_fence_array_next if index > array->num_fences.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210610210925.642582-2-jason@jlekstrand.net
Signed-off-by: Christian König <christian.koenig@amd.com>
2022-03-25 14:18:23 +01:00
Linus Torvalds
34af78c4e6 IOMMU Updates for Linux v5.18
Including:
 
 	- IOMMU Core changes:
 	  - Removal of aux domain related code as it is basically dead
 	    and will be replaced by iommu-fd framework
 	  - Split of iommu_ops to carry domain-specific call-backs
 	    separatly
 	  - Cleanup to remove useless ops->capable implementations
 	  - Improve 32-bit free space estimate in iova allocator
 
 	- Intel VT-d updates:
 	  - Various cleanups of the driver
 	  - Support for ATS of SoC-integrated devices listed in
 	    ACPI/SATC table
 
 	- ARM SMMU updates:
 	  - Fix SMMUv3 soft lockup during continuous stream of events
 	  - Fix error path for Qualcomm SMMU probe()
 	  - Rework SMMU IRQ setup to prepare the ground for PMU support
 	  - Minor cleanups and refactoring
 
 	- AMD IOMMU driver:
 	  - Some minor cleanups and error-handling fixes
 
 	- Rockchip IOMMU driver:
 	  - Use standard driver registration
 
 	- MSM IOMMU driver:
 	  - Minor cleanup and change to standard driver registration
 
 	- Mediatek IOMMU driver:
 	  - Fixes for IOTLB flushing logic
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Merge tag 'iommu-updates-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull iommu updates from Joerg Roedel:

 - IOMMU Core changes:
      - Removal of aux domain related code as it is basically dead and
        will be replaced by iommu-fd framework
      - Split of iommu_ops to carry domain-specific call-backs separatly
      - Cleanup to remove useless ops->capable implementations
      - Improve 32-bit free space estimate in iova allocator

 - Intel VT-d updates:
      - Various cleanups of the driver
      - Support for ATS of SoC-integrated devices listed in ACPI/SATC
        table

 - ARM SMMU updates:
      - Fix SMMUv3 soft lockup during continuous stream of events
      - Fix error path for Qualcomm SMMU probe()
      - Rework SMMU IRQ setup to prepare the ground for PMU support
      - Minor cleanups and refactoring

 - AMD IOMMU driver:
      - Some minor cleanups and error-handling fixes

 - Rockchip IOMMU driver:
      - Use standard driver registration

 - MSM IOMMU driver:
      - Minor cleanup and change to standard driver registration

 - Mediatek IOMMU driver:
      - Fixes for IOTLB flushing logic

* tag 'iommu-updates-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (47 commits)
  iommu/amd: Improve amd_iommu_v2_exit()
  iommu/amd: Remove unused struct fault.devid
  iommu/amd: Clean up function declarations
  iommu/amd: Call memunmap in error path
  iommu/arm-smmu: Account for PMU interrupts
  iommu/vt-d: Enable ATS for the devices in SATC table
  iommu/vt-d: Remove unused function intel_svm_capable()
  iommu/vt-d: Add missing "__init" for rmrr_sanity_check()
  iommu/vt-d: Move intel_iommu_ops to header file
  iommu/vt-d: Fix indentation of goto labels
  iommu/vt-d: Remove unnecessary prototypes
  iommu/vt-d: Remove unnecessary includes
  iommu/vt-d: Remove DEFER_DEVICE_DOMAIN_INFO
  iommu/vt-d: Remove domain and devinfo mempool
  iommu/vt-d: Remove iova_cache_get/put()
  iommu/vt-d: Remove finding domain in dmar_insert_one_dev_info()
  iommu/vt-d: Remove intel_iommu::domains
  iommu/mediatek: Always tlb_flush_all when each PM resume
  iommu/mediatek: Add tlb_lock in tlb_flush_all
  iommu/mediatek: Remove the power status checking in tlb flush all
  ...
2022-03-24 19:48:57 -07:00
Linus Torvalds
6f2689a766 SCSI misc on 20220324
This series consists of the usual driver updates (qla2xxx, pm8001,
 libsas, smartpqi, scsi_debug, lpfc, iscsi, mpi3mr) plus minor updates
 and bug fixes.  The high blast radius core update is the removal of
 write same, which affects block and several non-SCSI devices.  The
 other big change, which is more local, is the removal of the SCSI
 pointer.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This series consists of the usual driver updates (qla2xxx, pm8001,
  libsas, smartpqi, scsi_debug, lpfc, iscsi, mpi3mr) plus minor updates
  and bug fixes.

  The high blast radius core update is the removal of write same, which
  affects block and several non-SCSI devices. The other big change,
  which is more local, is the removal of the SCSI pointer"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (281 commits)
  scsi: scsi_ioctl: Drop needless assignment in sg_io()
  scsi: bsg: Drop needless assignment in scsi_bsg_sg_io_fn()
  scsi: lpfc: Copyright updates for 14.2.0.0 patches
  scsi: lpfc: Update lpfc version to 14.2.0.0
  scsi: lpfc: SLI path split: Refactor BSG paths
  scsi: lpfc: SLI path split: Refactor Abort paths
  scsi: lpfc: SLI path split: Refactor SCSI paths
  scsi: lpfc: SLI path split: Refactor CT paths
  scsi: lpfc: SLI path split: Refactor misc ELS paths
  scsi: lpfc: SLI path split: Refactor VMID paths
  scsi: lpfc: SLI path split: Refactor FDISC paths
  scsi: lpfc: SLI path split: Refactor LS_RJT paths
  scsi: lpfc: SLI path split: Refactor LS_ACC paths
  scsi: lpfc: SLI path split: Refactor the RSCN/SCR/RDF/EDC/FARPR paths
  scsi: lpfc: SLI path split: Refactor PLOGI/PRLI/ADISC/LOGO paths
  scsi: lpfc: SLI path split: Refactor base ELS paths and the FLOGI path
  scsi: lpfc: SLI path split: Introduce lpfc_prep_wqe
  scsi: lpfc: SLI path split: Refactor fast and slow paths to native SLI4
  scsi: lpfc: SLI path split: Refactor lpfc_iocbq
  scsi: lpfc: Use kcalloc()
  ...
2022-03-24 19:37:53 -07:00
Linus Torvalds
b1f8ccdaae - Significant refactoring and fixing of how DM core does bio-based IO
accounting with focus on fixing wildly inaccurate IO stats for
   dm-crypt (and other DM targets that defer bio submission in their
   own workqueues). End result is proper IO accounting, made possible
   by targets being updated to use the new dm_submit_bio_remap()
   interface.
 
 - Add hipri bio polling support (REQ_POLLED) to bio-based DM.
 
 - Reduce dm_io and dm_target_io structs so that a single dm_io (which
   contains dm_target_io and first clone bio) weighs in at 256 bytes.
   For reference the bio struct is 128 bytes.
 
 - Various other small cleanups, fixes or improvements in DM core and
   targets.
 
 - Update MAINTAINERS with my kernel.org email address to allow
   distinction between my "upstream" and "Red" Hats.
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Merge tag 'for-5.18/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper updates from Mike Snitzer:

 - Significant refactoring and fixing of how DM core does bio-based IO
   accounting with focus on fixing wildly inaccurate IO stats for
   dm-crypt (and other DM targets that defer bio submission in their own
   workqueues). End result is proper IO accounting, made possible by
   targets being updated to use the new dm_submit_bio_remap() interface.

 - Add hipri bio polling support (REQ_POLLED) to bio-based DM.

 - Reduce dm_io and dm_target_io structs so that a single dm_io (which
   contains dm_target_io and first clone bio) weighs in at 256 bytes.
   For reference the bio struct is 128 bytes.

 - Various other small cleanups, fixes or improvements in DM core and
   targets.

 - Update MAINTAINERS with my kernel.org email address to allow
   distinction between my "upstream" and "Red" Hats.

* tag 'for-5.18/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (46 commits)
  dm: consolidate spinlocks in dm_io struct
  dm: reduce size of dm_io and dm_target_io structs
  dm: switch dm_target_io booleans over to proper flags
  dm: switch dm_io booleans over to proper flags
  dm: update email address in MAINTAINERS
  dm: return void from __send_empty_flush
  dm: factor out dm_io_complete
  dm cache: use dm_submit_bio_remap
  dm: simplify dm_sumbit_bio_remap interface
  dm thin: use dm_submit_bio_remap
  dm: add WARN_ON_ONCE to dm_submit_bio_remap
  dm: support bio polling
  block: add ->poll_bio to block_device_operations
  dm mpath: use DMINFO instead of printk with KERN_INFO
  dm: stop using bdevname
  dm-zoned: remove the ->name field in struct dmz_dev
  dm: remove unnecessary local variables in __bind
  dm: requeue IO if mapping table not yet available
  dm io: remove stale comment block for dm_io()
  dm thin metadata: remove unused dm_thin_remove_block and __remove
  ...
2022-03-24 19:25:24 -07:00
Hugh Dickins
566d336288 mm: warn on deleting redirtied only if accounted
filemap_unaccount_folio() has a WARN_ON_ONCE(folio_test_dirty(folio)).  It
is good to warn of late dirtying on a persistent filesystem, but late
dirtying on tmpfs can only lose data which is expected to be thrown away;
and it's a pity if that warning comes ONCE on tmpfs, then hides others
which really matter.  Make it conditional on mapping_cap_writeback().

Cleanup: then folio_account_cleaned() no longer needs to check that for
itself, and so no longer needs to know the mapping.

Link: https://lkml.kernel.org/r/b5a1106c-7226-a5c6-ad41-ad4832cae1f@google.com
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Jan Kara <jack@suse.de>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:51 -07:00
David Hildenbrand
55c62fa7c5 mm/huge_memory: remove stale page_trans_huge_mapcount()
All users are gone, let's remove it.

Link: https://lkml.kernel.org/r/20220131162940.210846-9-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: David Rientjes <rientjes@google.com>
Cc: Don Dutile <ddutile@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jann Horn <jannh@google.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Liang Zhang <zhangliang5@huawei.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Nadav Amit <nadav.amit@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Yang Shi <shy828301@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:51 -07:00
David Hildenbrand
03104c2c5d mm/swapfile: remove stale reuse_swap_page()
All users are gone, let's remove it.  We'll let SWP_STABLE_WRITES stick
around for now, as it might come in handy in the near future.

Link: https://lkml.kernel.org/r/20220131162940.210846-8-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: David Rientjes <rientjes@google.com>
Cc: Don Dutile <ddutile@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jann Horn <jannh@google.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Liang Zhang <zhangliang5@huawei.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Nadav Amit <nadav.amit@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Yang Shi <shy828301@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:51 -07:00
Miaohe Lin
562beb7235 mm/huge_memory: make is_transparent_hugepage() static
It's only used inside the huge_memory.c now. Don't export it and make
it static. We can thus reduce the size of huge_memory.o a bit.

Without this patch:
   text	   data	    bss	    dec	    hex	filename
  32319	   2965	      4	  35288	   89d8	mm/huge_memory.o

With this patch:
   text	   data	    bss	    dec	    hex	filename
  32042	   2957	      4	  35003	   88bb	mm/huge_memory.o

Link: https://lkml.kernel.org/r/20220302082145.12028-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:50 -07:00
Andrey Konovalov
80207910cd kasan: move and hide kasan_save_enable/restore_multi_shot
- Move kasan_save_enable/restore_multi_shot() declarations to
   mm/kasan/kasan.h, as there is no need for them to be visible outside
   of KASAN implementation.

 - Only define and export these functions when KASAN tests are enabled.

 - Move their definitions closer to other test-related code in report.c.

Link: https://lkml.kernel.org/r/6ba637333b78447f027d775f2d55ab1a40f63c99.1646237226.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Marco Elver <elver@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:50 -07:00
Andrey Konovalov
ed6d74446c kasan: test: support async (again) and asymm modes for HW_TAGS
Async mode support has already been implemented in commit e80a76aa1a
("kasan, arm64: tests supports for HW_TAGS async mode") but then got
accidentally broken in commit 99734b535d ("kasan: detect false-positives
in tests").

Restore the changes removed by the latter patch and adapt them for asymm
mode: add a sync_fault flag to kunit_kasan_expectation that only get set
if the MTE fault was synchronous, and reenable MTE on such faults in
tests.

Also rename kunit_kasan_expectation to kunit_kasan_status and move its
definition to mm/kasan/kasan.h from include/linux/kasan.h, as this
structure is only internally used by KASAN.  Also put the structure
definition under IS_ENABLED(CONFIG_KUNIT).

Link: https://lkml.kernel.org/r/133970562ccacc93ba19d754012c562351d4a8c8.1645033139.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:48 -07:00
Andrey Konovalov
f6e39794f4 kasan, vmalloc: only tag normal vmalloc allocations
The kernel can use to allocate executable memory.  The only supported
way to do that is via __vmalloc_node_range() with the executable bit set
in the prot argument.  (vmap() resets the bit via pgprot_nx()).

Once tag-based KASAN modes start tagging vmalloc allocations, executing
code from such allocations will lead to the PC register getting a tag,
which is not tolerated by the kernel.

Only tag the allocations for normal kernel pages.

[andreyknvl@google.com: pass KASAN_VMALLOC_PROT_NORMAL to kasan_unpoison_vmalloc()]
  Link: https://lkml.kernel.org/r/9230ca3d3e40ffca041c133a524191fd71969a8d.1646233925.git.andreyknvl@google.com
[andreyknvl@google.com: support tagged vmalloc mappings]
  Link: https://lkml.kernel.org/r/2f6605e3a358cf64d73a05710cb3da356886ad29.1646233925.git.andreyknvl@google.com
[andreyknvl@google.com: don't unintentionally disabled poisoning]
  Link: https://lkml.kernel.org/r/de4587d6a719232e83c760113e46ed2d4d8da61e.1646757322.git.andreyknvl@google.com

Link: https://lkml.kernel.org/r/fbfd9939a4dc375923c9a5c6b9e7ab05c26b8c6b.1643047180.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:48 -07:00
Andrey Konovalov
23689e91fb kasan, vmalloc: add vmalloc tagging for HW_TAGS
Add vmalloc tagging support to HW_TAGS KASAN.

The key difference between HW_TAGS and the other two KASAN modes when it
comes to vmalloc: HW_TAGS KASAN can only assign tags to physical memory.
The other two modes have shadow memory covering every mapped virtual
memory region.

Make __kasan_unpoison_vmalloc() for HW_TAGS KASAN:

 - Skip non-VM_ALLOC mappings as HW_TAGS KASAN can only tag a single
   mapping of normal physical memory; see the comment in the function.

 - Generate a random tag, tag the returned pointer and the allocation,
   and initialize the allocation at the same time.

 - Propagate the tag into the page stucts to allow accesses through
   page_address(vmalloc_to_page()).

The rest of vmalloc-related KASAN hooks are not needed:

 - The shadow-related ones are fully skipped.

 - __kasan_poison_vmalloc() is kept as a no-op with a comment.

Poisoning and zeroing of physical pages that are backing vmalloc()
allocations are skipped via __GFP_SKIP_KASAN_UNPOISON and
__GFP_SKIP_ZERO: __kasan_unpoison_vmalloc() does that instead.

Enabling CONFIG_KASAN_VMALLOC with HW_TAGS is not yet allowed.

Link: https://lkml.kernel.org/r/d19b2e9e59a9abc59d05b72dea8429dcaea739c6.1643047180.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Co-developed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:48 -07:00
Andrey Konovalov
9353ffa6e9 kasan, page_alloc: allow skipping memory init for HW_TAGS
Add a new GFP flag __GFP_SKIP_ZERO that allows to skip memory
initialization.  The flag is only effective with HW_TAGS KASAN.

This flag will be used by vmalloc code for page_alloc allocations backing
vmalloc() mappings in a following patch.  The reason to skip memory
initialization for these pages in page_alloc is because vmalloc code will
be initializing them instead.

With the current implementation, when __GFP_SKIP_ZERO is provided,
__GFP_ZEROTAGS is ignored.  This doesn't matter, as these two flags are
never provided at the same time.  However, if this is changed in the
future, this particular implementation detail can be changed as well.

Link: https://lkml.kernel.org/r/0d53efeff345de7d708e0baa0d8829167772521e.1643047180.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:47 -07:00
Andrey Konovalov
53ae233c30 kasan, page_alloc: allow skipping unpoisoning for HW_TAGS
Add a new GFP flag __GFP_SKIP_KASAN_UNPOISON that allows skipping KASAN
poisoning for page_alloc allocations.  The flag is only effective with
HW_TAGS KASAN.

This flag will be used by vmalloc code for page_alloc allocations backing
vmalloc() mappings in a following patch.  The reason to skip KASAN
poisoning for these pages in page_alloc is because vmalloc code will be
poisoning them instead.

Also reword the comment for __GFP_SKIP_KASAN_POISON.

Link: https://lkml.kernel.org/r/35c97d77a704f6ff971dd3bfe4be95855744108e.1643047180.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:47 -07:00
Andrey Konovalov
f49d9c5bb1 kasan, mm: only define ___GFP_SKIP_KASAN_POISON with HW_TAGS
Only define the ___GFP_SKIP_KASAN_POISON flag when CONFIG_KASAN_HW_TAGS is
enabled.

This patch it not useful by itself, but it prepares the code for additions
of new KASAN-specific GFP patches.

Link: https://lkml.kernel.org/r/44e5738a584c11801b2b8f1231898918efc8634a.1643047180.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:47 -07:00
Andrey Konovalov
01d92c7f35 kasan, vmalloc, arm64: mark vmalloc mappings as pgprot_tagged
HW_TAGS KASAN relies on ARM Memory Tagging Extension (MTE).  With MTE, a
memory region must be mapped as MT_NORMAL_TAGGED to allow setting memory
tags via MTE-specific instructions.

Add proper protection bits to vmalloc() allocations.  These allocations
are always backed by page_alloc pages, so the tags will actually be
getting set on the corresponding physical memory.

Link: https://lkml.kernel.org/r/983fc33542db2f6b1e77b34ca23448d4640bbb9e.1643047180.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Co-developed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:47 -07:00
Andrey Konovalov
1d96320f8d kasan, vmalloc: add vmalloc tagging for SW_TAGS
Add vmalloc tagging support to SW_TAGS KASAN.

 - __kasan_unpoison_vmalloc() now assigns a random pointer tag, poisons
   the virtual mapping accordingly, and embeds the tag into the returned
   pointer.

 - __get_vm_area_node() (used by vmalloc() and vmap()) and
   pcpu_get_vm_areas() save the tagged pointer into vm_struct->addr
   (note: not into vmap_area->addr).

   This requires putting kasan_unpoison_vmalloc() after
   setup_vmalloc_vm[_locked](); otherwise the latter will overwrite the
   tagged pointer. The tagged pointer then is naturally propagateed to
   vmalloc() and vmap().

 - vm_map_ram() returns the tagged pointer directly.

As a result of this change, vm_struct->addr is now tagged.

Enabling KASAN_VMALLOC with SW_TAGS is not yet allowed.

Link: https://lkml.kernel.org/r/4a78f3c064ce905e9070c29733aca1dd254a74f1.1643047180.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:47 -07:00
Andrey Konovalov
579fb0ac08 kasan: add wrappers for vmalloc hooks
Add wrappers around functions that [un]poison memory for vmalloc
allocations.  These functions will be used by HW_TAGS KASAN and therefore
need to be disabled when kasan=off command line argument is provided.

This patch does no functional changes for software KASAN modes.

Link: https://lkml.kernel.org/r/3b8728eac438c55389fb0f9a8a2145d71dd77487.1643047180.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:47 -07:00
Andrey Konovalov
5bd9bae22a kasan: reorder vmalloc hooks
Group functions that [de]populate shadow memory for vmalloc.  Group
functions that [un]poison memory for vmalloc.

This patch does no functional changes but prepares KASAN code for adding
vmalloc support to HW_TAGS KASAN.

Link: https://lkml.kernel.org/r/aeef49eb249c206c4c9acce2437728068da74c28.1643047180.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:47 -07:00
Andrey Konovalov
0b7ccc70ee kasan, vmalloc: drop outdated VM_KASAN comment
The comment about VM_KASAN in include/linux/vmalloc.c is outdated.
VM_KASAN is currently only used to mark vm_areas allocated for kernel
modules when CONFIG_KASAN_VMALLOC is disabled.

Drop the comment.

Link: https://lkml.kernel.org/r/780395afea83a147b3b5acc36cf2e38f7f8479f9.1643047180.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:47 -07:00
Andrey Konovalov
63840de296 kasan, x86, arm64, s390: rename functions for modules shadow
Rename kasan_free_shadow to kasan_free_module_shadow and
kasan_module_alloc to kasan_alloc_module_shadow.

These functions are used to allocate/free shadow memory for kernel modules
when KASAN_VMALLOC is not enabled.  The new names better reflect their
purpose.

Also reword the comment next to their declaration to improve clarity.

Link: https://lkml.kernel.org/r/36db32bde765d5d0b856f77d2d806e838513fe84.1643047180.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:47 -07:00
Andrey Konovalov
b42090ae6f kasan, page_alloc: merge kasan_alloc_pages into post_alloc_hook
Currently, the code responsible for initializing and poisoning memory in
post_alloc_hook() is scattered across two locations: kasan_alloc_pages()
hook for HW_TAGS KASAN and post_alloc_hook() itself.  This is confusing.

This and a few following patches combine the code from these two
locations.  Along the way, these patches do a step-by-step restructure the
many performed checks to make them easier to follow.

Replace the only caller of kasan_alloc_pages() with its implementation.

As kasan_has_integrated_init() is only true when CONFIG_KASAN_HW_TAGS is
enabled, moving the code does no functional changes.

Also move init and init_tags variables definitions out of
kasan_has_integrated_init() clause in post_alloc_hook(), as they have the
same values regardless of what the if condition evaluates to.

This patch is not useful by itself but makes the simplifications in the
following patches easier to follow.

Link: https://lkml.kernel.org/r/5ac7e0b30f5cbb177ec363ddd7878a3141289592.1643047180.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:46 -07:00
Andrey Konovalov
c82ce3195f mm: clarify __GFP_ZEROTAGS comment
__GFP_ZEROTAGS is intended as an optimization: if memory is zeroed during
allocation, it's possible to set memory tags at the same time with little
performance impact.

Clarify this intention of __GFP_ZEROTAGS in the comment.

Link: https://lkml.kernel.org/r/cdffde013973c5634a447513e10ec0d21e8eee29.1643047180.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:46 -07:00
Andrey Konovalov
7c13c163e0 kasan, page_alloc: merge kasan_free_pages into free_pages_prepare
Currently, the code responsible for initializing and poisoning memory in
free_pages_prepare() is scattered across two locations: kasan_free_pages()
for HW_TAGS KASAN and free_pages_prepare() itself.  This is confusing.

This and a few following patches combine the code from these two
locations.  Along the way, these patches also simplify the performed
checks to make them easier to follow.

Replaces the only caller of kasan_free_pages() with its implementation.

As kasan_has_integrated_init() is only true when CONFIG_KASAN_HW_TAGS is
enabled, moving the code does no functional changes.

This patch is not useful by itself but makes the simplifications in the
following patches easier to follow.

Link: https://lkml.kernel.org/r/303498d15840bb71905852955c6e2390ecc87139.1643047180.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:46 -07:00
Hugh Dickins
bb43b14b57 mm: delete __ClearPageWaiters()
The PG_waiters bit is not included in PAGE_FLAGS_CHECK_AT_FREE, and
vmscan.c's free_unref_page_list() callers rely on that not to generate
bad_page() alerts.  So __page_cache_release(), put_pages_list() and
release_pages() (and presumably copy-and-pasted free_zone_device_page())
are redundant and misleading to make a special point of clearing it (as
the "__" implies, it could only safely be used on the freeing path).

Delete __ClearPageWaiters().  Remark on this in one of the "possible"
comments in folio_wake_bit(), and delete the superfluous comments.

Link: https://lkml.kernel.org/r/3eafa969-5b1a-accf-88fe-318784c791a@google.com
Signed-off-by: Hugh Dickins <hughd@google.com>
Tested-by: Yu Zhao <yuzhao@google.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-24 19:06:45 -07:00
Linus Torvalds
85c7000fda The highlights are:
- several changes to how snap context and snap realms are tracked
   (Xiubo Li).  In particular, this should resolve a long-standing
   issue of high kworker CPU usage and various stalls caused by
   needless iteration over all inodes in the snap realm.
 
 - async create fixes to address hangs in some edge cases (Jeff Layton)
 
 - support for getvxattr MDS op for querying server-side xattrs, such
   as file/directory layouts and ephemeral pins (Milind Changire)
 
 - average latency is now maintained for all metrics (Venky Shankar)
 
 - some tweaks around handling inline data to make it fit better with
   netfs helper library (David Howells)
 
 Also a couple of memory leaks got plugged along with a few assorted
 fixups.  Last but not least, Xiubo has stepped up to serve as a CephFS
 co-maintainer.
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Merge tag 'ceph-for-5.18-rc1' of https://github.com/ceph/ceph-client

Pull ceph updates from Ilya Dryomov:
 "The highlights are:

   - several changes to how snap context and snap realms are tracked
     (Xiubo Li). In particular, this should resolve a long-standing
     issue of high kworker CPU usage and various stalls caused by
     needless iteration over all inodes in the snap realm.

   - async create fixes to address hangs in some edge cases (Jeff
     Layton)

   - support for getvxattr MDS op for querying server-side xattrs, such
     as file/directory layouts and ephemeral pins (Milind Changire)

   - average latency is now maintained for all metrics (Venky Shankar)

   - some tweaks around handling inline data to make it fit better with
     netfs helper library (David Howells)

  Also a couple of memory leaks got plugged along with a few assorted
  fixups. Last but not least, Xiubo has stepped up to serve as a CephFS
  co-maintainer"

* tag 'ceph-for-5.18-rc1' of https://github.com/ceph/ceph-client: (27 commits)
  ceph: fix memory leak in ceph_readdir when note_last_dentry returns error
  ceph: uninitialized variable in debug output
  ceph: use tracked average r/w/m latencies to display metrics in debugfs
  ceph: include average/stdev r/w/m latency in mds metrics
  ceph: track average r/w/m latency
  ceph: use ktime_to_timespec64() rather than jiffies_to_timespec64()
  ceph: assign the ci only when the inode isn't NULL
  ceph: fix inode reference leakage in ceph_get_snapdir()
  ceph: misc fix for code style and logs
  ceph: allocate capsnap memory outside of ceph_queue_cap_snap()
  ceph: do not release the global snaprealm until unmounting
  ceph: remove incorrect and unused CEPH_INO_DOTDOT macro
  MAINTAINERS: add Xiubo Li as cephfs co-maintainer
  ceph: eliminate the recursion when rebuilding the snap context
  ceph: do not update snapshot context when there is no new snapshot
  ceph: zero the dir_entries memory when allocating it
  ceph: move to a dedicated slabcache for ceph_cap_snap
  ceph: add getvxattr op
  libceph: drop else branches in prepare_read_data{,_cont}
  ceph: fix comments mentioning i_mutex
  ...
2022-03-24 18:32:48 -07:00
Linus Torvalds
b14ffae378 drm for 5.18-rc1
dma-buf:
 - rename dma-buf-map to iosys-map
 
 core:
 - move buddy allocator to core
 - add pci/platform init macros
 - improve EDID parser deep color handling
 - EDID timing type 7 support
 - add GPD Win Max quirk
 - add yes/no helpers to string_helpers
 - flatten syncobj chains
 - add nomodeset support to lots of drivers
 - improve fb-helper clipping support
 - add default property value interface
 
 fbdev:
 - improve fbdev ops speed
 
 ttm:
 - add a backpointer from ttm bo->ttm resource
 
 dp:
 - move displayport headers
 - add a dp helper module
 
 bridge:
 - anx7625 atomic support, HDCP support
 
 panel:
 - split out panel-lvds and lvds bindings
 - find panels in OF subnodes
 
 privacy:
 - add chromeos privacy screen support
 
 fb:
 - hot unplug fw fb on forced removal
 
 simpledrm:
 - request region instead of marking ioresource busy
 - add panel oreintation property
 
 udmabuf:
 - fix oops with 0 pages
 
 amdgpu:
 - power management code cleanup
 - Enable freesync video mode by default
 - RAS code cleanup
 - Improve VRAM access for debug using SDMA
 - SR-IOV rework special register access and fixes
 - profiling power state request ioctl
 - expose IP discovery via sysfs
 - Cyan skillfish updates
 - GC 10.3.7, SDMA 5.2.7, DCN 3.1.6 updates
 - expose benchmark tests via debugfs
 - add module param to disable XGMI for testing
 - GPU reset debugfs register dumping support
 
 amdkfd:
 - CRIU support
 - SDMA queue fixes
 
 radeon:
 - UVD suspend fix
 - iMac backlight fix
 
 i915:
 - minimal parallel submission for execlists
 - DG2-G12 subplatform added
 - DG2 programming workarounds
 - DG2 accelerated migration support
 - flat CCS and CCS engine support for XeHP
 - initial small BAR support
 - drop fake LMEM support
 - ADL-N PCH support
 - bigjoiner updates
 - introduce VMA resources and async unbinding
 - register definitions cleanups
 - multi-FBC refactoring
 - DG1 OPROM over SPI support
 - ADL-N platform enabling
 - opregion mailbox #5 support
 - DP MST ESI improvements
 - drm device based logging
 - async flip optimisation for DG2
 - CPU arch abstraction fixes
 - improve GuC ADS init to work on aarch64
 - tweak TTM LRU priority hint
 - GuC 69.0.3 support
 - remove short term execbuf pins
 
 nouveau:
 - higher DP/eDP bitrates
 - backlight fixes
 
 msm:
 - dpu + dp support for sc8180x
 - dp support for sm8350
 - dpu + dsi support for qcm2290
 - 10nm dsi phy tuning support
 - bridge support for dp encoder
 - gpu support for additional 7c3 SKUs
 
 ingenic:
 - HDMI support for JZ4780
 - aux channel EDID support
 
 ast:
 - AST2600 support
 - add wide screen support
 - create DP/DVI connectors
 
 omapdrm:
 - fix implicit dma_buf fencing
 
 vc4:
 - add CSC + full range support
 - better display firmware handoff
 
 panfrost:
 - add initial dual-core GPU support
 
 stm:
 - new revision support
 - fb handover support
 
 mediatek:
 - transfer display binding document to yaml format.
 - add mt8195 display device binding.
 - allow commands to be sent during video mode.
 - add wait_for_event for crtc disable by cmdq.
 
 tegra:
 - YUV format support
 
 rcar-du:
 - LVDS support for M3-W+ (R8A77961)
 
 exynos:
 - BGR pixel format for FIMD device
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Merge tag 'drm-next-2022-03-24' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "Lots of work all over, Intel improving DG2 support, amdkfd CRIU
  support, msm new hw support, and faster fbdev support.

  dma-buf:
   - rename dma-buf-map to iosys-map

  core:
   - move buddy allocator to core
   - add pci/platform init macros
   - improve EDID parser deep color handling
   - EDID timing type 7 support
   - add GPD Win Max quirk
   - add yes/no helpers to string_helpers
   - flatten syncobj chains
   - add nomodeset support to lots of drivers
   - improve fb-helper clipping support
   - add default property value interface

  fbdev:
   - improve fbdev ops speed

  ttm:
   - add a backpointer from ttm bo->ttm resource

  dp:
   - move displayport headers
   - add a dp helper module

  bridge:
   - anx7625 atomic support, HDCP support

  panel:
   - split out panel-lvds and lvds bindings
   - find panels in OF subnodes

  privacy:
   - add chromeos privacy screen support

  fb:
   - hot unplug fw fb on forced removal

  simpledrm:
   - request region instead of marking ioresource busy
   - add panel oreintation property

  udmabuf:
   - fix oops with 0 pages

  amdgpu:
   - power management code cleanup
   - Enable freesync video mode by default
   - RAS code cleanup
   - Improve VRAM access for debug using SDMA
   - SR-IOV rework special register access and fixes
   - profiling power state request ioctl
   - expose IP discovery via sysfs
   - Cyan skillfish updates
   - GC 10.3.7, SDMA 5.2.7, DCN 3.1.6 updates
   - expose benchmark tests via debugfs
   - add module param to disable XGMI for testing
   - GPU reset debugfs register dumping support

  amdkfd:
   - CRIU support
   - SDMA queue fixes

  radeon:
   - UVD suspend fix
   - iMac backlight fix

  i915:
   - minimal parallel submission for execlists
   - DG2-G12 subplatform added
   - DG2 programming workarounds
   - DG2 accelerated migration support
   - flat CCS and CCS engine support for XeHP
   - initial small BAR support
   - drop fake LMEM support
   - ADL-N PCH support
   - bigjoiner updates
   - introduce VMA resources and async unbinding
   - register definitions cleanups
   - multi-FBC refactoring
   - DG1 OPROM over SPI support
   - ADL-N platform enabling
   - opregion mailbox #5 support
   - DP MST ESI improvements
   - drm device based logging
   - async flip optimisation for DG2
   - CPU arch abstraction fixes
   - improve GuC ADS init to work on aarch64
   - tweak TTM LRU priority hint
   - GuC 69.0.3 support
   - remove short term execbuf pins

  nouveau:
   - higher DP/eDP bitrates
   - backlight fixes

  msm:
   - dpu + dp support for sc8180x
   - dp support for sm8350
   - dpu + dsi support for qcm2290
   - 10nm dsi phy tuning support
   - bridge support for dp encoder
   - gpu support for additional 7c3 SKUs

  ingenic:
   - HDMI support for JZ4780
   - aux channel EDID support

  ast:
   - AST2600 support
   - add wide screen support
   - create DP/DVI connectors

  omapdrm:
   - fix implicit dma_buf fencing

  vc4:
   - add CSC + full range support
   - better display firmware handoff

  panfrost:
   - add initial dual-core GPU support

  stm:
   - new revision support
   - fb handover support

  mediatek:
   - transfer display binding document to yaml format.
   - add mt8195 display device binding.
   - allow commands to be sent during video mode.
   - add wait_for_event for crtc disable by cmdq.

  tegra:
   - YUV format support

  rcar-du:
   - LVDS support for M3-W+ (R8A77961)

  exynos:
   - BGR pixel format for FIMD device"

* tag 'drm-next-2022-03-24' of git://anongit.freedesktop.org/drm/drm: (1529 commits)
  drm/i915/display: Do not re-enable PSR after it was marked as not reliable
  drm/i915/display: Fix HPD short pulse handling for eDP
  drm/amdgpu: Use drm_mode_copy()
  drm/radeon: Use drm_mode_copy()
  drm/amdgpu: Use ternary operator in `vcn_v1_0_start()`
  drm/amdgpu: Remove pointless on stack mode copies
  drm/amd/pm: fix indenting in __smu_cmn_reg_print_error()
  drm/amdgpu/dc: fix typos in comments
  drm/amdgpu: fix typos in comments
  drm/amd/pm: fix typos in comments
  drm/amdgpu: Add stolen reserved memory for MI25 SRIOV.
  drm/amdgpu: Merge get_reserved_allocation to get_vbios_allocations.
  drm/amdkfd: evict svm bo worker handle error
  drm/amdgpu/vcn: fix vcn ring test failure in igt reload test
  drm/amdgpu: only allow secure submission on rings which support that
  drm/amdgpu: fixed the warnings reported by kernel test robot
  drm/amd/display: 3.2.177
  drm/amd/display: [FW Promotion] Release 0.0.108.0
  drm/amd/display: Add save/restore PANEL_PWRSEQ_REF_DIV2
  drm/amd/display: Wait for hubp read line for Pollock
  ...
2022-03-24 16:19:43 -07:00
Linus Torvalds
52deda9551 Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
 "Various misc subsystems, before getting into the post-linux-next
  material.

  41 patches.

  Subsystems affected by this patch series: procfs, misc, core-kernel,
  lib, checkpatch, init, pipe, minix, fat, cgroups, kexec, kdump,
  taskstats, panic, kcov, resource, and ubsan"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (41 commits)
  Revert "ubsan, kcsan: Don't combine sanitizer with kcov on clang"
  kernel/resource: fix kfree() of bootmem memory again
  kcov: properly handle subsequent mmap calls
  kcov: split ioctl handling into locked and unlocked parts
  panic: move panic_print before kmsg dumpers
  panic: add option to dump all CPUs backtraces in panic_print
  docs: sysctl/kernel: add missing bit to panic_print
  taskstats: remove unneeded dead assignment
  kasan: no need to unset panic_on_warn in end_report()
  ubsan: no need to unset panic_on_warn in ubsan_epilogue()
  panic: unset panic_on_warn inside panic()
  docs: kdump: add scp example to write out the dump file
  docs: kdump: update description about sysfs file system support
  arm64: mm: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef
  x86/setup: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef
  riscv: mm: init: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef
  kexec: make crashk_res, crashk_low_res and crash_notes symbols always visible
  cgroup: use irqsave in cgroup_rstat_flush_locked().
  fat: use pointer to simple type in put_user()
  minix: fix bug when opening a file with O_DIRECT
  ...
2022-03-24 14:14:07 -07:00
Linus Torvalds
169e77764a Networking changes for 5.18.
Core
 ----
 
  - Introduce XDP multi-buffer support, allowing the use of XDP with
    jumbo frame MTUs and combination with Rx coalescing offloads (LRO).
 
  - Speed up netns dismantling (5x) and lower the memory cost a little.
    Remove unnecessary per-netns sockets. Scope some lists to a netns.
    Cut down RCU syncing. Use batch methods. Allow netdev registration
    to complete out of order.
 
  - Support distinguishing timestamp types (ingress vs egress) and
    maintaining them across packet scrubbing points (e.g. redirect).
 
  - Continue the work of annotating packet drop reasons throughout
    the stack.
 
  - Switch netdev error counters from an atomic to dynamically
    allocated per-CPU counters.
 
  - Rework a few preempt_disable(), local_irq_save() and busy waiting
    sections problematic on PREEMPT_RT.
 
  - Extend the ref_tracker to allow catching use-after-free bugs.
 
 BPF
 ---
 
  - Introduce "packing allocator" for BPF JIT images. JITed code is
    marked read only, and used to be allocated at page granularity.
    Custom allocator allows for more efficient memory use, lower
    iTLB pressure and prevents identity mapping huge pages from
    getting split.
 
  - Make use of BTF type annotations (e.g. __user, __percpu) to enforce
    the correct probe read access method, add appropriate helpers.
 
  - Convert the BPF preload to use light skeleton and drop
    the user-mode-driver dependency.
 
  - Allow XDP BPF_PROG_RUN test infra to send real packets, enabling
    its use as a packet generator.
 
  - Allow local storage memory to be allocated with GFP_KERNEL if called
    from a hook allowed to sleep.
 
  - Introduce fprobe (multi kprobe) to speed up mass attachment (arch
    bits to come later).
 
  - Add unstable conntrack lookup helpers for BPF by using the BPF
    kfunc infra.
 
  - Allow cgroup BPF progs to return custom errors to user space.
 
  - Add support for AF_UNIX iterator batching.
 
  - Allow iterator programs to use sleepable helpers.
 
  - Support JIT of add, and, or, xor and xchg atomic ops on arm64.
 
  - Add BTFGen support to bpftool which allows to use CO-RE in kernels
    without BTF info.
 
  - Large number of libbpf API improvements, cleanups and deprecations.
 
 Protocols
 ---------
 
  - Micro-optimize UDPv6 Tx, gaining up to 5% in test on dummy netdev.
 
  - Adjust TSO packet sizes based on min_rtt, allowing very low latency
    links (data centers) to always send full-sized TSO super-frames.
 
  - Make IPv6 flow label changes (AKA hash rethink) more configurable,
    via sysctl and setsockopt. Distinguish between server and client
    behavior.
 
  - VxLAN support to "collect metadata" devices to terminate only
    configured VNIs. This is similar to VLAN filtering in the bridge.
 
  - Support inserting IPv6 IOAM information to a fraction of frames.
 
  - Add protocol attribute to IP addresses to allow identifying where
    given address comes from (kernel-generated, DHCP etc.)
 
  - Support setting socket and IPv6 options via cmsg on ping6 sockets.
 
  - Reject mis-use of ECN bits in IP headers as part of DSCP/TOS.
    Define dscp_t and stop taking ECN bits into account in fib-rules.
 
  - Add support for locked bridge ports (for 802.1X).
 
  - tun: support NAPI for packets received from batched XDP buffs,
    doubling the performance in some scenarios.
 
  - IPv6 extension header handling in Open vSwitch.
 
  - Support IPv6 control message load balancing in bonding, prevent
    neighbor solicitation and advertisement from using the wrong port.
    Support NS/NA monitor selection similar to existing ARP monitor.
 
  - SMC
    - improve performance with TCP_CORK and sendfile()
    - support auto-corking
    - support TCP_NODELAY
 
  - MCTP (Management Component Transport Protocol)
    - add user space tag control interface
    - I2C binding driver (as specified by DMTF DSP0237)
 
  - Multi-BSSID beacon handling in AP mode for WiFi.
 
  - Bluetooth:
    - handle MSFT Monitor Device Event
    - add MGMT Adv Monitor Device Found/Lost events
 
  - Multi-Path TCP:
    - add support for the SO_SNDTIMEO socket option
    - lots of selftest cleanups and improvements
 
  - Increase the max PDU size in CAN ISOTP to 64 kB.
 
 Driver API
 ----------
 
  - Add HW counters for SW netdevs, a mechanism for devices which
    offload packet forwarding to report packet statistics back to
    software interfaces such as tunnels.
 
  - Select the default NIC queue count as a fraction of number of
    physical CPU cores, instead of hard-coding to 8.
 
  - Expose devlink instance locks to drivers. Allow device layer of
    drivers to use that lock directly instead of creating their own
    which always runs into ordering issues in devlink callbacks.
 
  - Add header/data split indication to guide user space enabling
    of TCP zero-copy Rx.
 
  - Allow configuring completion queue event size.
 
  - Refactor page_pool to enable fragmenting after allocation.
 
  - Add allocation and page reuse statistics to page_pool.
 
  - Improve Multiple Spanning Trees support in the bridge to allow
    reuse of topologies across VLANs, saving HW resources in switches.
 
  - DSA (Distributed Switch Architecture):
    - replay and offload of host VLAN entries
    - offload of static and local FDB entries on LAG interfaces
    - FDB isolation and unicast filtering
 
 New hardware / drivers
 ----------------------
 
  - Ethernet:
    - LAN937x T1 PHYs
    - Davicom DM9051 SPI NIC driver
    - Realtek RTL8367S, RTL8367RB-VB switch and MDIO
    - Microchip ksz8563 switches
    - Netronome NFP3800 SmartNICs
    - Fungible SmartNICs
    - MediaTek MT8195 switches
 
  - WiFi:
    - mt76: MediaTek mt7916
    - mt76: MediaTek mt7921u USB adapters
    - brcmfmac: Broadcom BCM43454/6
 
  - Mobile:
    - iosm: Intel M.2 7360 WWAN card
 
 Drivers
 -------
 
  - Convert many drivers to the new phylink API built for split PCS
    designs but also simplifying other cases.
 
  - Intel Ethernet NICs:
    - add TTY for GNSS module for E810T device
    - improve AF_XDP performance
    - GTP-C and GTP-U filter offload
    - QinQ VLAN support
 
  - Mellanox Ethernet NICs (mlx5):
    - support xdp->data_meta
    - multi-buffer XDP
    - offload tc push_eth and pop_eth actions
 
  - Netronome Ethernet NICs (nfp):
    - flow-independent tc action hardware offload (police / meter)
    - AF_XDP
 
  - Other Ethernet NICs:
    - at803x: fiber and SFP support
    - xgmac: mdio: preamble suppression and custom MDC frequencies
    - r8169: enable ASPM L1.2 if system vendor flags it as safe
    - macb/gem: ZynqMP SGMII
    - hns3: add TX push mode
    - dpaa2-eth: software TSO
    - lan743x: multi-queue, mdio, SGMII, PTP
    - axienet: NAPI and GRO support
 
  - Mellanox Ethernet switches (mlxsw):
    - source and dest IP address rewrites
    - RJ45 ports
 
  - Marvell Ethernet switches (prestera):
    - basic routing offload
    - multi-chain TC ACL offload
 
  - NXP embedded Ethernet switches (ocelot & felix):
    - PTP over UDP with the ocelot-8021q DSA tagging protocol
    - basic QoS classification on Felix DSA switch using dcbnl
    - port mirroring for ocelot switches
 
  - Microchip high-speed industrial Ethernet (sparx5):
    - offloading of bridge port flooding flags
    - PTP Hardware Clock
 
  - Other embedded switches:
    - lan966x: PTP Hardward Clock
    - qca8k: mdio read/write operations via crafted Ethernet packets
 
  - Qualcomm 802.11ax WiFi (ath11k):
    - add LDPC FEC type and 802.11ax High Efficiency data in radiotap
    - enable RX PPDU stats in monitor co-exist mode
 
  - Intel WiFi (iwlwifi):
    - UHB TAS enablement via BIOS
    - band disablement via BIOS
    - channel switch offload
    - 32 Rx AMPDU sessions in newer devices
 
  - MediaTek WiFi (mt76):
    - background radar detection
    - thermal management improvements on mt7915
    - SAR support for more mt76 platforms
    - MBSSID and 6 GHz band on mt7915
 
  - RealTek WiFi:
    - rtw89: AP mode
    - rtw89: 160 MHz channels and 6 GHz band
    - rtw89: hardware scan
 
  - Bluetooth:
    - mt7921s: wake on Bluetooth, SCO over I2S, wide-band-speed (WBS)
 
  - Microchip CAN (mcp251xfd):
    - multiple RX-FIFOs and runtime configurable RX/TX rings
    - internal PLL, runtime PM handling simplification
    - improve chip detection and error handling after wakeup
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "The sprinkling of SPI drivers is because we added a new one and Mark
  sent us a SPI driver interface conversion pull request.

  Core
  ----

   - Introduce XDP multi-buffer support, allowing the use of XDP with
     jumbo frame MTUs and combination with Rx coalescing offloads (LRO).

   - Speed up netns dismantling (5x) and lower the memory cost a little.
     Remove unnecessary per-netns sockets. Scope some lists to a netns.
     Cut down RCU syncing. Use batch methods. Allow netdev registration
     to complete out of order.

   - Support distinguishing timestamp types (ingress vs egress) and
     maintaining them across packet scrubbing points (e.g. redirect).

   - Continue the work of annotating packet drop reasons throughout the
     stack.

   - Switch netdev error counters from an atomic to dynamically
     allocated per-CPU counters.

   - Rework a few preempt_disable(), local_irq_save() and busy waiting
     sections problematic on PREEMPT_RT.

   - Extend the ref_tracker to allow catching use-after-free bugs.

  BPF
  ---

   - Introduce "packing allocator" for BPF JIT images. JITed code is
     marked read only, and used to be allocated at page granularity.
     Custom allocator allows for more efficient memory use, lower iTLB
     pressure and prevents identity mapping huge pages from getting
     split.

   - Make use of BTF type annotations (e.g. __user, __percpu) to enforce
     the correct probe read access method, add appropriate helpers.

   - Convert the BPF preload to use light skeleton and drop the
     user-mode-driver dependency.

   - Allow XDP BPF_PROG_RUN test infra to send real packets, enabling
     its use as a packet generator.

   - Allow local storage memory to be allocated with GFP_KERNEL if
     called from a hook allowed to sleep.

   - Introduce fprobe (multi kprobe) to speed up mass attachment (arch
     bits to come later).

   - Add unstable conntrack lookup helpers for BPF by using the BPF
     kfunc infra.

   - Allow cgroup BPF progs to return custom errors to user space.

   - Add support for AF_UNIX iterator batching.

   - Allow iterator programs to use sleepable helpers.

   - Support JIT of add, and, or, xor and xchg atomic ops on arm64.

   - Add BTFGen support to bpftool which allows to use CO-RE in kernels
     without BTF info.

   - Large number of libbpf API improvements, cleanups and deprecations.

  Protocols
  ---------

   - Micro-optimize UDPv6 Tx, gaining up to 5% in test on dummy netdev.

   - Adjust TSO packet sizes based on min_rtt, allowing very low latency
     links (data centers) to always send full-sized TSO super-frames.

   - Make IPv6 flow label changes (AKA hash rethink) more configurable,
     via sysctl and setsockopt. Distinguish between server and client
     behavior.

   - VxLAN support to "collect metadata" devices to terminate only
     configured VNIs. This is similar to VLAN filtering in the bridge.

   - Support inserting IPv6 IOAM information to a fraction of frames.

   - Add protocol attribute to IP addresses to allow identifying where
     given address comes from (kernel-generated, DHCP etc.)

   - Support setting socket and IPv6 options via cmsg on ping6 sockets.

   - Reject mis-use of ECN bits in IP headers as part of DSCP/TOS.
     Define dscp_t and stop taking ECN bits into account in fib-rules.

   - Add support for locked bridge ports (for 802.1X).

   - tun: support NAPI for packets received from batched XDP buffs,
     doubling the performance in some scenarios.

   - IPv6 extension header handling in Open vSwitch.

   - Support IPv6 control message load balancing in bonding, prevent
     neighbor solicitation and advertisement from using the wrong port.
     Support NS/NA monitor selection similar to existing ARP monitor.

   - SMC
      - improve performance with TCP_CORK and sendfile()
      - support auto-corking
      - support TCP_NODELAY

   - MCTP (Management Component Transport Protocol)
      - add user space tag control interface
      - I2C binding driver (as specified by DMTF DSP0237)

   - Multi-BSSID beacon handling in AP mode for WiFi.

   - Bluetooth:
      - handle MSFT Monitor Device Event
      - add MGMT Adv Monitor Device Found/Lost events

   - Multi-Path TCP:
      - add support for the SO_SNDTIMEO socket option
      - lots of selftest cleanups and improvements

   - Increase the max PDU size in CAN ISOTP to 64 kB.

  Driver API
  ----------

   - Add HW counters for SW netdevs, a mechanism for devices which
     offload packet forwarding to report packet statistics back to
     software interfaces such as tunnels.

   - Select the default NIC queue count as a fraction of number of
     physical CPU cores, instead of hard-coding to 8.

   - Expose devlink instance locks to drivers. Allow device layer of
     drivers to use that lock directly instead of creating their own
     which always runs into ordering issues in devlink callbacks.

   - Add header/data split indication to guide user space enabling of
     TCP zero-copy Rx.

   - Allow configuring completion queue event size.

   - Refactor page_pool to enable fragmenting after allocation.

   - Add allocation and page reuse statistics to page_pool.

   - Improve Multiple Spanning Trees support in the bridge to allow
     reuse of topologies across VLANs, saving HW resources in switches.

   - DSA (Distributed Switch Architecture):
      - replay and offload of host VLAN entries
      - offload of static and local FDB entries on LAG interfaces
      - FDB isolation and unicast filtering

  New hardware / drivers
  ----------------------

   - Ethernet:
      - LAN937x T1 PHYs
      - Davicom DM9051 SPI NIC driver
      - Realtek RTL8367S, RTL8367RB-VB switch and MDIO
      - Microchip ksz8563 switches
      - Netronome NFP3800 SmartNICs
      - Fungible SmartNICs
      - MediaTek MT8195 switches

   - WiFi:
      - mt76: MediaTek mt7916
      - mt76: MediaTek mt7921u USB adapters
      - brcmfmac: Broadcom BCM43454/6

   - Mobile:
      - iosm: Intel M.2 7360 WWAN card

  Drivers
  -------

   - Convert many drivers to the new phylink API built for split PCS
     designs but also simplifying other cases.

   - Intel Ethernet NICs:
      - add TTY for GNSS module for E810T device
      - improve AF_XDP performance
      - GTP-C and GTP-U filter offload
      - QinQ VLAN support

   - Mellanox Ethernet NICs (mlx5):
      - support xdp->data_meta
      - multi-buffer XDP
      - offload tc push_eth and pop_eth actions

   - Netronome Ethernet NICs (nfp):
      - flow-independent tc action hardware offload (police / meter)
      - AF_XDP

   - Other Ethernet NICs:
      - at803x: fiber and SFP support
      - xgmac: mdio: preamble suppression and custom MDC frequencies
      - r8169: enable ASPM L1.2 if system vendor flags it as safe
      - macb/gem: ZynqMP SGMII
      - hns3: add TX push mode
      - dpaa2-eth: software TSO
      - lan743x: multi-queue, mdio, SGMII, PTP
      - axienet: NAPI and GRO support

   - Mellanox Ethernet switches (mlxsw):
      - source and dest IP address rewrites
      - RJ45 ports

   - Marvell Ethernet switches (prestera):
      - basic routing offload
      - multi-chain TC ACL offload

   - NXP embedded Ethernet switches (ocelot & felix):
      - PTP over UDP with the ocelot-8021q DSA tagging protocol
      - basic QoS classification on Felix DSA switch using dcbnl
      - port mirroring for ocelot switches

   - Microchip high-speed industrial Ethernet (sparx5):
      - offloading of bridge port flooding flags
      - PTP Hardware Clock

   - Other embedded switches:
      - lan966x: PTP Hardward Clock
      - qca8k: mdio read/write operations via crafted Ethernet packets

   - Qualcomm 802.11ax WiFi (ath11k):
      - add LDPC FEC type and 802.11ax High Efficiency data in radiotap
      - enable RX PPDU stats in monitor co-exist mode

   - Intel WiFi (iwlwifi):
      - UHB TAS enablement via BIOS
      - band disablement via BIOS
      - channel switch offload
      - 32 Rx AMPDU sessions in newer devices

   - MediaTek WiFi (mt76):
      - background radar detection
      - thermal management improvements on mt7915
      - SAR support for more mt76 platforms
      - MBSSID and 6 GHz band on mt7915

   - RealTek WiFi:
      - rtw89: AP mode
      - rtw89: 160 MHz channels and 6 GHz band
      - rtw89: hardware scan

   - Bluetooth:
      - mt7921s: wake on Bluetooth, SCO over I2S, wide-band-speed (WBS)

   - Microchip CAN (mcp251xfd):
      - multiple RX-FIFOs and runtime configurable RX/TX rings
      - internal PLL, runtime PM handling simplification
      - improve chip detection and error handling after wakeup"

* tag 'net-next-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2521 commits)
  llc: fix netdevice reference leaks in llc_ui_bind()
  drivers: ethernet: cpsw: fix panic when interrupt coaleceing is set via ethtool
  ice: don't allow to run ice_send_event_to_aux() in atomic ctx
  ice: fix 'scheduling while atomic' on aux critical err interrupt
  net/sched: fix incorrect vlan_push_eth dest field
  net: bridge: mst: Restrict info size queries to bridge ports
  net: marvell: prestera: add missing destroy_workqueue() in prestera_module_init()
  drivers: net: xgene: Fix regression in CRC stripping
  net: geneve: add missing netlink policy and size for IFLA_GENEVE_INNER_PROTO_INHERIT
  net: dsa: fix missing host-filtered multicast addresses
  net/mlx5e: Fix build warning, detected write beyond size of field
  iwlwifi: mvm: Don't fail if PPAG isn't supported
  selftests/bpf: Fix kprobe_multi test.
  Revert "rethook: x86: Add rethook x86 implementation"
  Revert "arm64: rethook: Add arm64 rethook implementation"
  Revert "powerpc: Add rethook support"
  Revert "ARM: rethook: Add rethook arm implementation"
  netdevice: add missing dm_private kdoc
  net: bridge: mst: prevent NULL deref in br_mst_info_size()
  selftests: forwarding: Use same VRF for port and VLAN upper
  ...
2022-03-24 13:13:26 -07:00
Linus Torvalds
7403e6d826 VFIO updates for v5.18-rc1
- Introduce new device migration uAPI and implement device specific
    mlx5 vfio-pci variant driver supporting new protocol (Jason Gunthorpe,
    Yishai Hadas, Leon Romanovsky)
 
  - New HiSilicon acc vfio-pci variant driver, also supporting migration
    interface (Shameer Kolothum, Longfang Liu)
 
  - D3hot fixes for vfio-pci-core (Abhishek Sahu)
 
  - Document new vfio-pci variant driver acceptance criteria
    (Alex Williamson)
 
  - Fix UML build unresolved ioport_{un}map() functions
    (Alex Williamson)
 
  - Fix MAINTAINERS due to header movement (Lukas Bulwahn)
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Merge tag 'vfio-v5.18-rc1' of https://github.com/awilliam/linux-vfio

Pull VFIO updates from Alex Williamson:

 - Introduce new device migration uAPI and implement device specific
   mlx5 vfio-pci variant driver supporting new protocol (Jason
   Gunthorpe, Yishai Hadas, Leon Romanovsky)

 - New HiSilicon acc vfio-pci variant driver, also supporting migration
   interface (Shameer Kolothum, Longfang Liu)

 - D3hot fixes for vfio-pci-core (Abhishek Sahu)

 - Document new vfio-pci variant driver acceptance criteria
   (Alex Williamson)

 - Fix UML build unresolved ioport_{un}map() functions
   (Alex Williamson)

 - Fix MAINTAINERS due to header movement (Lukas Bulwahn)

* tag 'vfio-v5.18-rc1' of https://github.com/awilliam/linux-vfio: (31 commits)
  vfio-pci: Provide reviewers and acceptance criteria for variant drivers
  MAINTAINERS: adjust entry for header movement in hisilicon qm driver
  hisi_acc_vfio_pci: Use its own PCI reset_done error handler
  hisi_acc_vfio_pci: Add support for VFIO live migration
  crypto: hisilicon/qm: Set the VF QM state register
  hisi_acc_vfio_pci: Add helper to retrieve the struct pci_driver
  hisi_acc_vfio_pci: Restrict access to VF dev BAR2 migration region
  hisi_acc_vfio_pci: add new vfio_pci driver for HiSilicon ACC devices
  hisi_acc_qm: Move VF PCI device IDs to common header
  crypto: hisilicon/qm: Move few definitions to common header
  crypto: hisilicon/qm: Move the QM header to include/linux
  vfio/mlx5: Fix to not use 0 as NULL pointer
  PCI/IOV: Fix wrong kernel-doc identifier
  vfio/mlx5: Use its own PCI reset_done error handler
  vfio/pci: Expose vfio_pci_core_aer_err_detected()
  vfio/mlx5: Implement vfio_pci driver for mlx5 devices
  vfio/mlx5: Expose migration commands over mlx5 device
  vfio: Remove migration protocol v1 documentation
  vfio: Extend the device migration protocol with RUNNING_P2P
  vfio: Define device migration protocol v2
  ...
2022-03-24 12:35:59 -07:00
Linus Torvalds
1ebdbeb03e ARM:
- Proper emulation of the OSLock feature of the debug architecture
 
 - Scalibility improvements for the MMU lock when dirty logging is on
 
 - New VMID allocator, which will eventually help with SVA in VMs
 
 - Better support for PMUs in heterogenous systems
 
 - PSCI 1.1 support, enabling support for SYSTEM_RESET2
 
 - Implement CONFIG_DEBUG_LIST at EL2
 
 - Make CONFIG_ARM64_ERRATUM_2077057 default y
 
 - Reduce the overhead of VM exit when no interrupt is pending
 
 - Remove traces of 32bit ARM host support from the documentation
 
 - Updated vgic selftests
 
 - Various cleanups, doc updates and spelling fixes
 
 RISC-V:
 
 - Prevent KVM_COMPAT from being selected
 
 - Optimize __kvm_riscv_switch_to() implementation
 
 - RISC-V SBI v0.3 support
 
 s390:
 
 - memop selftest
 
 - fix SCK locking
 
 - adapter interruptions virtualization for secure guests
 
 - add Claudio Imbrenda as maintainer
 
 - first step to do proper storage key checking
 
 x86:
 
 - Continue switching kvm_x86_ops to static_call(); introduce
   static_call_cond() and __static_call_ret0 when applicable.
 
 - Cleanup unused arguments in several functions
 
 - Synthesize AMD 0x80000021 leaf
 
 - Fixes and optimization for Hyper-V sparse-bank hypercalls
 
 - Implement Hyper-V's enlightened MSR bitmap for nested SVM
 
 - Remove MMU auditing
 
 - Eager splitting of page tables (new aka "TDP" MMU only) when dirty
   page tracking is enabled
 
 - Cleanup the implementation of the guest PGD cache
 
 - Preparation for the implementation of Intel IPI virtualization
 
 - Fix some segment descriptor checks in the emulator
 
 - Allow AMD AVIC support on systems with physical APIC ID above 255
 
 - Better API to disable virtualization quirks
 
 - Fixes and optimizations for the zapping of page tables:
 
   - Zap roots in two passes, avoiding RCU read-side critical sections
     that last too long for very large guests backed by 4 KiB SPTEs.
 
   - Zap invalid and defunct roots asynchronously via concurrency-managed
     work queue.
 
   - Allowing yielding when zapping TDP MMU roots in response to the root's
     last reference being put.
 
   - Batch more TLB flushes with an RCU trick.  Whoever frees the paging
     structure now holds RCU as a proxy for all vCPUs running in the guest,
     i.e. to prolongs the grace period on their behalf.  It then kicks the
     the vCPUs out of guest mode before doing rcu_read_unlock().
 
 Generic:
 
 - Introduce __vcalloc and use it for very large allocations that
   need memcg accounting
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "ARM:
   - Proper emulation of the OSLock feature of the debug architecture

   - Scalibility improvements for the MMU lock when dirty logging is on

   - New VMID allocator, which will eventually help with SVA in VMs

   - Better support for PMUs in heterogenous systems

   - PSCI 1.1 support, enabling support for SYSTEM_RESET2

   - Implement CONFIG_DEBUG_LIST at EL2

   - Make CONFIG_ARM64_ERRATUM_2077057 default y

   - Reduce the overhead of VM exit when no interrupt is pending

   - Remove traces of 32bit ARM host support from the documentation

   - Updated vgic selftests

   - Various cleanups, doc updates and spelling fixes

  RISC-V:
   - Prevent KVM_COMPAT from being selected

   - Optimize __kvm_riscv_switch_to() implementation

   - RISC-V SBI v0.3 support

  s390:
   - memop selftest

   - fix SCK locking

   - adapter interruptions virtualization for secure guests

   - add Claudio Imbrenda as maintainer

   - first step to do proper storage key checking

  x86:
   - Continue switching kvm_x86_ops to static_call(); introduce
     static_call_cond() and __static_call_ret0 when applicable.

   - Cleanup unused arguments in several functions

   - Synthesize AMD 0x80000021 leaf

   - Fixes and optimization for Hyper-V sparse-bank hypercalls

   - Implement Hyper-V's enlightened MSR bitmap for nested SVM

   - Remove MMU auditing

   - Eager splitting of page tables (new aka "TDP" MMU only) when dirty
     page tracking is enabled

   - Cleanup the implementation of the guest PGD cache

   - Preparation for the implementation of Intel IPI virtualization

   - Fix some segment descriptor checks in the emulator

   - Allow AMD AVIC support on systems with physical APIC ID above 255

   - Better API to disable virtualization quirks

   - Fixes and optimizations for the zapping of page tables:

      - Zap roots in two passes, avoiding RCU read-side critical
        sections that last too long for very large guests backed by 4
        KiB SPTEs.

      - Zap invalid and defunct roots asynchronously via
        concurrency-managed work queue.

      - Allowing yielding when zapping TDP MMU roots in response to the
        root's last reference being put.

      - Batch more TLB flushes with an RCU trick. Whoever frees the
        paging structure now holds RCU as a proxy for all vCPUs running
        in the guest, i.e. to prolongs the grace period on their behalf.
        It then kicks the the vCPUs out of guest mode before doing
        rcu_read_unlock().

  Generic:
   - Introduce __vcalloc and use it for very large allocations that need
     memcg accounting"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (246 commits)
  KVM: use kvcalloc for array allocations
  KVM: x86: Introduce KVM_CAP_DISABLE_QUIRKS2
  kvm: x86: Require const tsc for RT
  KVM: x86: synthesize CPUID leaf 0x80000021h if useful
  KVM: x86: add support for CPUID leaf 0x80000021
  KVM: x86: do not use KVM_X86_OP_OPTIONAL_RET0 for get_mt_mask
  Revert "KVM: x86/mmu: Zap only TDP MMU leafs in kvm_zap_gfn_range()"
  kvm: x86/mmu: Flush TLB before zap_gfn_range releases RCU
  KVM: arm64: fix typos in comments
  KVM: arm64: Generalise VM features into a set of flags
  KVM: s390: selftests: Add error memop tests
  KVM: s390: selftests: Add more copy memop tests
  KVM: s390: selftests: Add named stages for memop test
  KVM: s390: selftests: Add macro as abstraction for MEM_OP
  KVM: s390: selftests: Split memop tests
  KVM: s390x: fix SCK locking
  RISC-V: KVM: Implement SBI HSM suspend call
  RISC-V: KVM: Add common kvm_riscv_vcpu_wfi() function
  RISC-V: Add SBI HSM suspend related defines
  RISC-V: KVM: Implement SBI v0.3 SRST extension
  ...
2022-03-24 11:58:57 -07:00
Linus Torvalds
3ce62cf4dc flexible-array transformations for 5.18-rc1
Hi Linus,
 
 Please, pull the following treewide patch that replaces zero-length arrays with
 flexible-array members. This patch has been baking in linux-next for a
 whole development cycle.
 
 Thanks
 --
 Gustavo
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Merge tag 'flexible-array-transformations-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux

Pull flexible-array transformations from Gustavo Silva:
 "Treewide patch that replaces zero-length arrays with flexible-array
  members.

  This has been baking in linux-next for a whole development cycle"

* tag 'flexible-array-transformations-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
  treewide: Replace zero-length arrays with flexible-array members
2022-03-24 11:39:32 -07:00
Linus Torvalds
cd4699c5fd prlimit and set/getpriority tasklist_lock optimizations
The tasklist_lock popped up as a scalability bottleneck on some testing
 workloads.  The readlocks in do_prlimit and set/getpriority are not
 necessary in all cases.
 
 Based on a cycles profile, it looked like ~87% of the time was spent in
 the kernel, ~42% of which was just trying to get *some* spinlock
 (queued_spin_lock_slowpath, not necessarily the tasklist_lock).
 
 The big offenders (with rough percentages in cycles of the overall trace):
 
 - do_wait 11%
 - setpriority 8% (this patchset)
 - kill 8%
 - do_exit 5%
 - clone 3%
 - prlimit64 2%   (this patchset)
 - getrlimit 1%   (this patchset)
 
 I can't easily test this patchset on the original workload for various
 reasons.  Instead, I used the microbenchmark below to at least verify
 there was some improvement.  This patchset had a 28% speedup (12% from
 baseline to set/getprio, then another 14% for prlimit).
 
 One interesting thing is that my libc's getrlimit() was calling
 prlimit64, so hoisting the read_lock(tasklist_lock) into sys_prlimit64
 had no effect - it essentially optimized the older syscalls only.  I
 didn't do that in this patchset, but figured I'd mention it since it was
 an option from the previous patch's discussion.
 
 v3: https://lkml.kernel.org/r/20220106172041.522167-1-brho@google.com
 v2: https://lore.kernel.org/lkml/20220105212828.197013-1-brho@google.com/
 - update_rlimit_cpu on the group_leader instead of for_each_thread.
 - update_rlimit_cpu still returns 0 or -ESRCH, even though we don't care
   about the error here.  it felt safer that way in case someone uses
   that function again.
 
 v1: https://lore.kernel.org/lkml/20211213220401.1039578-1-brho@google.com/
 
 int main(int argc, char **argv)
 {
         pid_t child;
         struct rlimit rlim[1];
 
         fork(); fork(); fork(); fork(); fork(); fork();
 
         for (int i = 0; i < 5000; i++) {
                 child = fork();
                 if (child < 0)
                         exit(1);
                 if (child > 0) {
                         usleep(1000);
                         kill(child, SIGTERM);
                         waitpid(child, NULL, 0);
                 } else {
                         for (;;) {
                                 setpriority(PRIO_PROCESS, 0,
                                             getpriority(PRIO_PROCESS, 0));
                                 getrlimit(RLIMIT_CPU, rlim);
                         }
                 }
         }
 
         return 0;
 }
 
 Barret Rhoden (3):
   setpriority: only grab the tasklist_lock for PRIO_PGRP
   prlimit: make do_prlimit() static
   prlimit: do not grab the tasklist_lock
 
  include/linux/posix-timers.h   |   2 +-
  include/linux/resource.h       |   2 -
  kernel/sys.c                   | 127 +++++++++++++++++----------------
  kernel/time/posix-cpu-timers.c |  12 +++-
  4 files changed, 76 insertions(+), 67 deletions(-)
 
 I have dropped the first change in this series as an almost identical
 change was merged as commit 7f8ca0edfe ("kernel/sys.c: only take
 tasklist_lock for get/setpriority(PRIO_PGRP)").
 
 Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
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Merge tag 'prlimit-tasklist_lock-for-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

Pull tasklist_lock optimizations from Eric Biederman:
 "prlimit and getpriority tasklist_lock optimizations

  The tasklist_lock popped up as a scalability bottleneck on some
  testing workloads. The readlocks in do_prlimit and set/getpriority are
  not necessary in all cases.

  Based on a cycles profile, it looked like ~87% of the time was spent
  in the kernel, ~42% of which was just trying to get *some* spinlock
  (queued_spin_lock_slowpath, not necessarily the tasklist_lock).

  The big offenders (with rough percentages in cycles of the overall
  trace):
   - do_wait 11%
   - setpriority 8% (done previously in commit 7f8ca0edfe)
   - kill 8%
   - do_exit 5%
   - clone 3%
   - prlimit64 2%   (this patchset)
   - getrlimit 1%   (this patchset)

  I can't easily test this patchset on the original workload for various
  reasons. Instead, I used the microbenchmark below to at least verify
  there was some improvement. This patchset had a 28% speedup (12% from
  baseline to set/getprio, then another 14% for prlimit).

  This series used to do the setpriority case, but an almost identical
  change was merged as commit 7f8ca0edfe ("kernel/sys.c: only take
  tasklist_lock for get/setpriority(PRIO_PGRP)") so that has been
  dropped from here.

  One interesting thing is that my libc's getrlimit() was calling
  prlimit64, so hoisting the read_lock(tasklist_lock) into sys_prlimit64
  had no effect - it essentially optimized the older syscalls only. I
  didn't do that in this patchset, but figured I'd mention it since it
  was an option from the previous patch's discussion"

micobenchmark.c:
---------------
	int main(int argc, char **argv)
	{
		pid_t child;
		struct rlimit rlim[1];

		fork(); fork(); fork(); fork(); fork(); fork();

		for (int i = 0; i < 5000; i++) {
			child = fork();
			if (child < 0)
				exit(1);
			if (child > 0) {
				usleep(1000);
				kill(child, SIGTERM);
				waitpid(child, NULL, 0);
			} else {
				for (;;) {
					setpriority(PRIO_PROCESS, 0,
						    getpriority(PRIO_PROCESS, 0));
					getrlimit(RLIMIT_CPU, rlim);
				}
			}
		}

		return 0;
	}

Link: https://lore.kernel.org/lkml/20211213220401.1039578-1-brho@google.com/ [v1]
Link: https://lore.kernel.org/lkml/20220105212828.197013-1-brho@google.com/ [v2]
Link: https://lore.kernel.org/lkml/20220106172041.522167-1-brho@google.com/ [v3]

* tag 'prlimit-tasklist_lock-for-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  prlimit: do not grab the tasklist_lock
  prlimit: make do_prlimit() static
2022-03-24 10:16:00 -07:00
Phil Sutter
d645552e9b netfilter: egress: Report interface as outgoing
Otherwise packets in egress chains seem like they are being received by
the interface, not sent out via it.

Fixes: 42df6e1d22 ("netfilter: Introduce egress hook")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Florian Westphal <fw@strlen.de>
2022-03-24 15:09:53 +01:00
Jisheng Zhang
f05fa10901 kexec: make crashk_res, crashk_low_res and crash_notes symbols always visible
Patch series "kexec: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef", v2.

Replace the conditional compilation using "#ifdef CONFIG_KEXEC_CORE" by
a check for "IS_ENABLED(CONFIG_KEXEC_CORE)", to simplify the code and
increase compile coverage.

I only modified x86, arm, arm64 and riscv, other architectures such as
sh, powerpc and s390 are better to be kept kexec code as-is so they are
not touched.

This patch (of 5):

Make the forward declarations of crashk_res, crashk_low_res and
crash_notes always visible.  Code referring to these symbols can then just
check for IS_ENABLED(CONFIG_KEXEC_CORE), instead of requiring conditional
compilation using an #ifdef, thus preparing to increase compile coverage
and simplify the code.

Link: https://lkml.kernel.org/r/20211206160514.2000-1-jszhang@kernel.org
Link: https://lkml.kernel.org/r/20211206160514.2000-2-jszhang@kernel.org
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Cc: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-23 19:00:34 -07:00
Randy Dunlap
abc7da58c4 init.h: improve __setup and early_param documentation
Igor noted in [1] that there are quite a few __setup() handling
functions that return incorrect values.  Doing this can be harmless, but
it can also cause strings to be added to init's argument or environment
list, polluting them.

Since __setup() handling and return values are not documented, first add
documentation for that.  Also add more documentation for early_param()
handling and return values.

For __setup() functions, returning 0 (not handled) has questionable
value if it is just a malformed option value, as in

  rodata=junk

since returning 0 would just cause "rodata=junk" to be added to init's
environment unnecessarily:

  Run /sbin/init as init process
    with arguments:
      /sbin/init
    with environment:
      HOME=/
      TERM=linux
      splash=native
      rodata=junk

Also, there are no recommendations on whether to print a warning when an
unknown parameter value is seen.  I am not addressing that here.

[1] lore.kernel.org/r/64644a2f-4a20-bab3-1e15-3b2cdd0defe3@omprussia.ru

Link: https://lkml.kernel.org/r/20220221050852.1147-1-rdunlap@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: Igor Zhbanov <i.zhbanov@omprussia.ru>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-23 19:00:34 -07:00
Andy Shevchenko
25cb5b7ac6 bitfield: add explicit inclusions to the example
It's not obvious that bitfield.h doesn't guarantee the bits.h inclusion
and the example in the former is confusing.  Some developers think that
it's okay to just include bitfield.h to get it working.  Change example
to explicitly include necessary headers in order to avoid confusion.

Link: https://lkml.kernel.org/r/20220207123341.47533-1-andriy.shevchenko@linux.intel.com
Fixes: 3e9b3112ec ("add basic register-field manipulation macros")
Depends-on: 8bd9cb51da ("locking/atomics, asm-generic: Move some macros from <linux/bitops.h> to a new <linux/bits.h> file")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reported-by: Jan Dąbroś <jsd@semihalf.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-23 19:00:33 -07:00
Christophe Leroy
f334f5668b ilog2: force inlining of __ilog2_u32() and __ilog2_u64()
Building a kernel with CONFIG_CC_OPTIMISE_FOR_SIZE leads to
__ilog2_u32() being duplicated 50 times and __ilog2_u64() 3 times in
vmlinux on a tiny powerpc32 config.

__ilog2_u32() being 2 instructions it is not worth being kept out of
line, so force inlining.  Allthough the u64 version is a bit bigger,
there is still a small benefit in keeping it inlined.  On a 64 bits
config there's a real benefit.

With this change the size of vmlinux text is reduced by 1 kbytes, which
is approx 50% more than the size of the removed functions.

Before the patch there is for instance:

	c00d2a94 <__ilog2_u32>:
	c00d2a94:	7c 63 00 34 	cntlzw  r3,r3
	c00d2a98:	20 63 00 1f 	subfic  r3,r3,31
	c00d2a9c:	4e 80 00 20 	blr

	c00d36d8 <__order_base_2>:
	c00d36d8:	28 03 00 01 	cmplwi  r3,1
	c00d36dc:	40 81 00 2c 	ble     c00d3708 <__order_base_2+0x30>
	c00d36e0:	94 21 ff f0 	stwu    r1,-16(r1)
	c00d36e4:	7c 08 02 a6 	mflr    r0
	c00d36e8:	38 63 ff ff 	addi    r3,r3,-1
	c00d36ec:	90 01 00 14 	stw     r0,20(r1)
	c00d36f0:	4b ff f3 a5 	bl      c00d2a94 <__ilog2_u32>
	c00d36f4:	80 01 00 14 	lwz     r0,20(r1)
	c00d36f8:	38 63 00 01 	addi    r3,r3,1
	c00d36fc:	7c 08 03 a6 	mtlr    r0
	c00d3700:	38 21 00 10 	addi    r1,r1,16
	c00d3704:	4e 80 00 20 	blr
	c00d3708:	38 60 00 00 	li      r3,0
	c00d370c:	4e 80 00 20 	blr

With the patch it has become:

	c00d356c <__order_base_2>:
	c00d356c:	28 03 00 01 	cmplwi  r3,1
	c00d3570:	40 81 00 14 	ble     c00d3584 <__order_base_2+0x18>
	c00d3574:	38 63 ff ff 	addi    r3,r3,-1
	c00d3578:	7c 63 00 34 	cntlzw  r3,r3
	c00d357c:	20 63 00 20 	subfic  r3,r3,32
	c00d3580:	4e 80 00 20 	blr
	c00d3584:	38 60 00 00 	li      r3,0
	c00d3588:	4e 80 00 20 	blr

No more need for __order_base_2() to setup a stack frame and
save/restore caller address. And the following 'add 1' is
merged in the subtract.

Another typical use of it:

	c080ff28 <hugepagesz_setup>:
	...
	c080fff8:	7f c3 f3 78 	mr      r3,r30
	c080fffc:	4b 8f 81 f1 	bl      c01081ec <__ilog2_u32>
	c0810000:	38 63 ff f2 	addi    r3,r3,-14
	...

Becomes

	c080ff1c <hugepagesz_setup>:
	...
	c080ffec:	7f c3 00 34 	cntlzw  r3,r30
	c080fff0:	20 63 00 11 	subfic  r3,r3,17
	...

Here no need to move r30 argument to r3 then substract 14 to result.  Just
work on r30 and merge the 'sub 14' with the 'sub from 31'.

Link: https://lkml.kernel.org/r/803a2ac3d923ebcfd0dd40f5886b05cae7bb0aba.1644243860.git.christophe.leroy@csgroup.eu
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-23 19:00:33 -07:00
Rasmus Villemoes
14e83077d5 include: drop pointless __compiler_offsetof indirection
(1) compiler_types.h is unconditionally included via an -include flag
    (see scripts/Makefile.lib), and it defines __compiler_offsetof
    unconditionally.  So testing for definedness of __compiler_offsetof is
    mostly pointless.

(2) Every relevant compiler provides __builtin_offsetof (even sparse
    has had that for 14 years), and if for whatever reason one would end
    up picking up the poor man's fallback definition (C file compiler with
    completely custom CFLAGS?), newer clang versions won't treat the
    result as an Integer Constant Expression, so if used in place where
    such is required (static initializer or static_assert), one would get
    errors like

      t.c:11:16: error: static_assert expression is not an integral constant expression
      t.c:11:16: note: cast that performs the conversions of a reinterpret_cast is not allowed in a constant expression
      t.c:4:33: note: expanded from macro 'offsetof'
      #define offsetof(TYPE, MEMBER)  ((size_t)&((TYPE *)0)->MEMBER)

So just define offsetof unconditionally and directly in terms of
__builtin_offsetof.

Link: https://lkml.kernel.org/r/20220202102147.326672-1-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-23 19:00:33 -07:00
Bjorn Helgaas
179fd6ba3b Documentation/sparse: add hints about __CHECKER__
Several attributes depend on __CHECKER__, but previously there was no
clue in the tree about when __CHECKER__ might be defined.  Add hints at
the most common places (__kernel, __user, __iomem, __bitwise) and in the
sparse documentation.

Link: https://lkml.kernel.org/r/20220310220927.245704-3-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: "Michael S . Tsirkin" <mst@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-23 19:00:33 -07:00
Linus Torvalds
b4bc93bd76 ARM driver updates for 5.18
There are a few separately maintained driver subsystems that we merge through
 the SoC tree, notable changes are:
 
  - Memory controller updates, mainly for Tegra and Mediatek SoCs,
    and clarifications for the memory controller DT bindings
 
  - SCMI firmware interface updates, in particular a new transport based
    on OPTEE and support for atomic operations.
 
  - Cleanups to the TEE subsystem, refactoring its memory management
 
 For SoC specific drivers without a separate subsystem, changes include
 
  - Smaller updates and fixes for TI, AT91/SAMA5, Qualcomm and NXP
    Layerscape SoCs.
 
  - Driver support for Microchip SAMA5D29, Tesla FSD, Renesas RZ/G2L,
    and Qualcomm SM8450.
 
  - Better power management on Mediatek MT81xx, NXP i.MX8MQ
    and older NVIDIA Tegra chips
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Merge tag 'arm-drivers-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM driver updates from Arnd Bergmann:
 "There are a few separately maintained driver subsystems that we merge
  through the SoC tree, notable changes are:

   - Memory controller updates, mainly for Tegra and Mediatek SoCs, and
     clarifications for the memory controller DT bindings

   - SCMI firmware interface updates, in particular a new transport
     based on OPTEE and support for atomic operations.

   - Cleanups to the TEE subsystem, refactoring its memory management

  For SoC specific drivers without a separate subsystem, changes include

   - Smaller updates and fixes for TI, AT91/SAMA5, Qualcomm and NXP
     Layerscape SoCs.

   - Driver support for Microchip SAMA5D29, Tesla FSD, Renesas RZ/G2L,
     and Qualcomm SM8450.

   - Better power management on Mediatek MT81xx, NXP i.MX8MQ and older
     NVIDIA Tegra chips"

* tag 'arm-drivers-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (154 commits)
  ARM: spear: fix typos in comments
  soc/microchip: fix invalid free in mpfs_sys_controller_delete
  soc: s4: Add support for power domains controller
  dt-bindings: power: add Amlogic s4 power domains bindings
  ARM: at91: add support in soc driver for new SAMA5D29
  soc: mediatek: mmsys: add sw0_rst_offset in mmsys driver data
  dt-bindings: memory: renesas,rpc-if: Document RZ/V2L SoC
  memory: emif: check the pointer temp in get_device_details()
  memory: emif: Add check for setup_interrupts
  dt-bindings: arm: mediatek: mmsys: add support for MT8186
  dt-bindings: mediatek: add compatible for MT8186 pwrap
  soc: mediatek: pwrap: add pwrap driver for MT8186 SoC
  soc: mediatek: mmsys: add mmsys reset control for MT8186
  soc: mediatek: mtk-infracfg: Disable ACP on MT8192
  soc: ti: k3-socinfo: Add AM62x JTAG ID
  soc: mediatek: add MTK mutex support for MT8186
  soc: mediatek: mmsys: add mt8186 mmsys routing table
  soc: mediatek: pm-domains: Add support for mt8186
  dt-bindings: power: Add MT8186 power domains
  soc: mediatek: pm-domains: Add support for mt8195
  ...
2022-03-23 18:23:13 -07:00