The Arm FFA specification describes a software architecture to
leverages the virtualization extension to isolate software images
provided by an ecosystem of vendors from each other and describes
interfaces that standardize communication between the various software
images including communication between images in the Secure world and
Normal world. Any Hypervisor could use the FFA interfaces to enable
communication between VMs it manages.
The Hypervisor a.k.a Partition managers in FFA terminology can assign
system resources(Memory regions, Devices, CPU cycles) to the partitions
and manage isolation amongst them.
This is the initial and minimal support for the FFA interface to enable
communication between secure partitions and the normal world OS.
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Merge tag 'arm-ffa-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/drivers
Arm Firmware Framework for ARMv8-A(FFA) interface driver
The Arm FFA specification describes a software architecture to
leverages the virtualization extension to isolate software images
provided by an ecosystem of vendors from each other and describes
interfaces that standardize communication between the various software
images including communication between images in the Secure world and
Normal world. Any Hypervisor could use the FFA interfaces to enable
communication between VMs it manages.
The Hypervisor a.k.a Partition managers in FFA terminology can assign
system resources(Memory regions, Devices, CPU cycles) to the partitions
and manage isolation amongst them.
This is the initial and minimal support for the FFA interface to enable
communication between secure partitions and the normal world OS.
* tag 'arm-ffa-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
firmware: arm_ffa: Add support for MEM_* interfaces
firmware: arm_ffa: Setup in-kernel users of FFA partitions
firmware: arm_ffa: Add support for SMCCC as transport to FFA driver
firmware: arm_ffa: Add initial Arm FFA driver support
firmware: arm_ffa: Add initial FFA bus support for device enumeration
arm64: smccc: Add support for SMCCCv1.2 extended input/output registers
Link: https://lore.kernel.org/r/20210601095838.GA838783@bogus
Signed-off-by: Olof Johansson <olof@lixom.net>
This adds the definition of both an oscillator at 12Mhz required by the
the watchdog and the watchdog device node.
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Daniel Palmer <daniel@0x0f.com>
xa_destroy() needs to be called to destroy a virtual EPC's page array
before calling kfree() to free the virtual EPC. Currently it is not
called so add the missing xa_destroy().
Fixes: 540745ddbc ("x86/sgx: Introduce virtual EPC for use by KVM guests")
Signed-off-by: Kai Huang <kai.huang@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Dave Hansen <dave.hansen@intel.com>
Tested-by: Yang Zhong <yang.zhong@intel.com>
Link: https://lkml.kernel.org/r/20210615101639.291929-1-kai.huang@intel.com
Kuniyuki Iwashima says:
====================
The SO_REUSEPORT option allows sockets to listen on the same port and to
accept connections evenly. However, there is a defect in the current
implementation [1]. When a SYN packet is received, the connection is tied
to a listening socket. Accordingly, when the listener is closed, in-flight
requests during the three-way handshake and child sockets in the accept
queue are dropped even if other listeners on the same port could accept
such connections.
This situation can happen when various server management tools restart
server (such as nginx) processes. For instance, when we change nginx
configurations and restart it, it spins up new workers that respect the
new configuration and closes all listeners on the old workers, resulting
in the in-flight ACK of 3WHS is responded by RST.
To avoid such a situation, users have to know deeply how the kernel handles
SYN packets and implement connection draining by eBPF [2]:
1. Stop routing SYN packets to the listener by eBPF.
2. Wait for all timers to expire to complete requests
3. Accept connections until EAGAIN, then close the listener.
or
1. Start counting SYN packets and accept syscalls using the eBPF map.
2. Stop routing SYN packets.
3. Accept connections up to the count, then close the listener.
In either way, we cannot close a listener immediately. However, ideally,
the application need not drain the not yet accepted sockets because 3WHS
and tying a connection to a listener are just the kernel behaviour. The
root cause is within the kernel, so the issue should be addressed in kernel
space and should not be visible to user space. This patchset fixes it so
that users need not take care of kernel implementation and connection
draining. With this patchset, the kernel redistributes requests and
connections from a listener to the others in the same reuseport group
at/after close or shutdown syscalls.
Although some software does connection draining, there are still merits in
migration. For some security reasons, such as replacing TLS certificates,
we may want to apply new settings as soon as possible and/or we may not be
able to wait for connection draining. The sockets in the accept queue have
not started application sessions yet. So, if we do not drain such sockets,
they can be handled by the newer listeners and could have a longer
lifetime. It is difficult to drain all connections in every case, but we
can decrease such aborted connections by migration. In that sense,
migration is always better than draining.
Moreover, auto-migration simplifies user space logic and also works well in
a case where we cannot modify and build a server program to implement the
workaround.
Note that the source and destination listeners MUST have the same settings
at the socket API level; otherwise, applications may face inconsistency and
cause errors. In such a case, we have to use the eBPF program to select a
specific listener or to cancel migration.
Special thanks to Martin KaFai Lau for bouncing ideas and exchanging code
snippets along the way.
Link:
[1] The SO_REUSEPORT socket option
https://lwn.net/Articles/542629/
[2] Re: [PATCH 1/1] net: Add SO_REUSEPORT_LISTEN_OFF socket option as drain mode
https://lore.kernel.org/netdev/1458828813.10868.65.camel@edumazet-glaptop3.roam.corp.google.com/
Changelog:
v8:
* Make reuse const in reuseport_sock_index()
* Don't use __reuseport_add_sock() in reuseport_alloc()
* Change the arg of the second memcpy() in reuseport_grow()
* Fix coding style to use goto in reuseport_alloc()
* Keep sk_refcnt uninitialized in inet_reqsk_clone()
* Initialize ireq_opt and ipv6_opt separately in reqsk_migrate_reset()
[ This series does not include a stats patch suggested by Yuchung Cheng
not to drop Acked-by/Reviewed-by tags and save reviewer's time. I will
post the patch as a follow up after this series is merged. ]
v7:
https://lore.kernel.org/bpf/20210521182104.18273-1-kuniyu@amazon.co.jp/
* Prevent attaching/detaching a bpf prog via shutdowned socket
* Fix typo in commit messages
* Split selftest into subtests
v6:
https://lore.kernel.org/bpf/20210517002258.75019-1-kuniyu@amazon.co.jp/
* Change description in ip-sysctl.rst
* Test IPPROTO_TCP before reading tfo_listener
* Move reqsk_clone() to inet_connection_sock.c and rename to
inet_reqsk_clone()
* Pass req->rsk_listener to inet_csk_reqsk_queue_drop() and
reqsk_queue_removed() in the migration path of receiving ACK
* s/ARG_PTR_TO_SOCKET/PTR_TO_SOCKET/ in sk_reuseport_is_valid_access()
* In selftest, use atomic ops to increment global vars, drop ACK by XDP,
enable force fastopen, use "skel->bss" instead of "skel->data"
v5:
https://lore.kernel.org/bpf/20210510034433.52818-1-kuniyu@amazon.co.jp/
* Move initializtion of sk_node from 6th to 5th patch
* Initialize sk_refcnt in reqsk_clone()
* Modify some definitions in reqsk_timer_handler()
* Validate in which path/state migration happens in selftest
v4:
https://lore.kernel.org/bpf/20210427034623.46528-1-kuniyu@amazon.co.jp/
* Make some functions and variables 'static' in selftest
* Remove 'scalability' from the cover letter
v3:
https://lore.kernel.org/bpf/20210420154140.80034-1-kuniyu@amazon.co.jp/
* Add sysctl back for reuseport_grow()
* Add helper functions to manage socks[]
* Separate migration related logic into functions: reuseport_resurrect(),
reuseport_stop_listen_sock(), reuseport_migrate_sock()
* Clone request_sock to be migrated
* Migrate request one by one
* Pass child socket to eBPF prog
v2:
https://lore.kernel.org/netdev/20201207132456.65472-1-kuniyu@amazon.co.jp/
* Do not save closed sockets in socks[]
* Revert 607904c357
* Extract inet_csk_reqsk_queue_migrate() into a single patch
* Change the spin_lock order to avoid lockdep warning
* Add static to __reuseport_select_sock
* Use refcount_inc_not_zero() in reuseport_select_migrated_sock()
* Set the default attach type in bpf_prog_load_check_attach()
* Define new proto of BPF_FUNC_get_socket_cookie
* Fix test to be compiled successfully
* Update commit messages
v1:
https://lore.kernel.org/netdev/20201201144418.35045-1-kuniyu@amazon.co.jp/
* Remove the sysctl option
* Enable migration if eBPF progam is not attached
* Add expected_attach_type to check if eBPF program can migrate sockets
* Add a field to tell migration type to eBPF program
* Support BPF_FUNC_get_socket_cookie to get the cookie of sk
* Allocate an empty skb if skb is NULL
* Pass req_to_sk(req)->sk_hash because listener's hash is zero
* Update commit messages and coverletter
RFC:
https://lore.kernel.org/netdev/20201117094023.3685-1-kuniyu@amazon.co.jp/
====================
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This patch adds a test for BPF_SK_REUSEPORT_SELECT_OR_MIGRATE and
removes 'static' from settimeo() in network_helpers.c.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20210612123224.12525-12-kuniyu@amazon.co.jp
This commit introduces a new section (sk_reuseport/migrate) and sets
expected_attach_type to two each section in BPF_PROG_TYPE_SK_REUSEPORT
program.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20210612123224.12525-11-kuniyu@amazon.co.jp
This patch introduces a new bpf_attach_type for BPF_PROG_TYPE_SK_REUSEPORT
to check if the attached eBPF program is capable of migrating sockets. When
the eBPF program is attached, we run it for socket migration if the
expected_attach_type is BPF_SK_REUSEPORT_SELECT_OR_MIGRATE or
net.ipv4.tcp_migrate_req is enabled.
Currently, the expected_attach_type is not enforced for the
BPF_PROG_TYPE_SK_REUSEPORT type of program. Thus, this commit follows the
earlier idea in the commit aac3fc320d ("bpf: Post-hooks for sys_bind") to
fix up the zero expected_attach_type in bpf_prog_load_fixup_attach_type().
Moreover, this patch adds a new field (migrating_sk) to sk_reuseport_md to
select a new listener based on the child socket. migrating_sk varies
depending on if it is migrating a request in the accept queue or during
3WHS.
- accept_queue : sock (ESTABLISHED/SYN_RECV)
- 3WHS : request_sock (NEW_SYN_RECV)
In the eBPF program, we can select a new listener by
BPF_FUNC_sk_select_reuseport(). Also, we can cancel migration by returning
SK_DROP. This feature is useful when listeners have different settings at
the socket API level or when we want to free resources as soon as possible.
- SK_PASS with selected_sk, select it as a new listener
- SK_PASS with selected_sk NULL, fallbacks to the random selection
- SK_DROP, cancel the migration.
There is a noteworthy point. We select a listening socket in three places,
but we do not have struct skb at closing a listener or retransmitting a
SYN+ACK. On the other hand, some helper functions do not expect skb is NULL
(e.g. skb_header_pointer() in BPF_FUNC_skb_load_bytes(), skb_tail_pointer()
in BPF_FUNC_skb_load_bytes_relative()). So we allocate an empty skb
temporarily before running the eBPF program.
Suggested-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/netdev/20201123003828.xjpjdtk4ygl6tg6h@kafai-mbp.dhcp.thefacebook.com/
Link: https://lore.kernel.org/netdev/20201203042402.6cskdlit5f3mw4ru@kafai-mbp.dhcp.thefacebook.com/
Link: https://lore.kernel.org/netdev/20201209030903.hhow5r53l6fmozjn@kafai-mbp.dhcp.thefacebook.com/
Link: https://lore.kernel.org/bpf/20210612123224.12525-10-kuniyu@amazon.co.jp
We will call sock_reuseport.prog for socket migration in the next commit,
so the eBPF program has to know which listener is closing to select a new
listener.
We can currently get a unique ID of each listener in the userspace by
calling bpf_map_lookup_elem() for BPF_MAP_TYPE_REUSEPORT_SOCKARRAY map.
This patch makes the pointer of sk available in sk_reuseport_md so that we
can get the ID by BPF_FUNC_get_socket_cookie() in the eBPF program.
Suggested-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/netdev/20201119001154.kapwihc2plp4f7zc@kafai-mbp.dhcp.thefacebook.com/
Link: https://lore.kernel.org/bpf/20210612123224.12525-9-kuniyu@amazon.co.jp
This patch also changes the code to call reuseport_migrate_sock() and
inet_reqsk_clone(), but unlike the other cases, we do not call
inet_reqsk_clone() right after reuseport_migrate_sock().
Currently, in the receive path for TCP_NEW_SYN_RECV sockets, its listener
has three kinds of refcnt:
(A) for listener itself
(B) carried by reuqest_sock
(C) sock_hold() in tcp_v[46]_rcv()
While processing the req, (A) may disappear by close(listener). Also, (B)
can disappear by accept(listener) once we put the req into the accept
queue. So, we have to hold another refcnt (C) for the listener to prevent
use-after-free.
For socket migration, we call reuseport_migrate_sock() to select a listener
with (A) and to increment the new listener's refcnt in tcp_v[46]_rcv().
This refcnt corresponds to (C) and is cleaned up later in tcp_v[46]_rcv().
Thus we have to take another refcnt (B) for the newly cloned request_sock.
In inet_csk_complete_hashdance(), we hold the count (B), clone the req, and
try to put the new req into the accept queue. By migrating req after
winning the "own_req" race, we can avoid such a worst situation:
CPU 1 looks up req1
CPU 2 looks up req1, unhashes it, then CPU 1 loses the race
CPU 3 looks up req2, unhashes it, then CPU 2 loses the race
...
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20210612123224.12525-8-kuniyu@amazon.co.jp
As with the preceding patch, this patch changes reqsk_timer_handler() to
call reuseport_migrate_sock() and inet_reqsk_clone() to migrate in-flight
requests at retransmitting SYN+ACKs. If we can select a new listener and
clone the request, we resume setting the SYN+ACK timer for the new req. If
we can set the timer, we call inet_ehash_insert() to unhash the old req and
put the new req into ehash.
The noteworthy point here is that by unhashing the old req, another CPU
processing it may lose the "own_req" race in tcp_v[46]_syn_recv_sock() and
drop the final ACK packet. However, the new timer will recover this
situation.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20210612123224.12525-7-kuniyu@amazon.co.jp
When we call close() or shutdown() for listening sockets, each child socket
in the accept queue are freed at inet_csk_listen_stop(). If we can get a
new listener by reuseport_migrate_sock() and clone the request by
inet_reqsk_clone(), we try to add it into the new listener's accept queue
by inet_csk_reqsk_queue_add(). If it fails, we have to call __reqsk_free()
to call sock_put() for its listener and free the cloned request.
After putting the full socket into ehash, tcp_v[46]_syn_recv_sock() sets
NULL to ireq_opt/pktopts in struct inet_request_sock, but ipv6_opt can be
non-NULL. So, we have to set NULL to ipv6_opt of the old request to avoid
double free.
Note that we do not update req->rsk_listener and instead clone the req to
migrate because another path may reference the original request. If we
protected it by RCU, we would need to add rcu_read_lock() in many places.
Suggested-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/netdev/20201209030903.hhow5r53l6fmozjn@kafai-mbp.dhcp.thefacebook.com/
Link: https://lore.kernel.org/bpf/20210612123224.12525-6-kuniyu@amazon.co.jp
reuseport_migrate_sock() does the same check done in
reuseport_listen_stop_sock(). If the reuseport group is capable of
migration, reuseport_migrate_sock() selects a new listener by the child
socket hash and increments the listener's sk_refcnt beforehand. Thus, if we
fail in the migration, we have to decrement it later.
We will support migration by eBPF in the later commits.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/bpf/20210612123224.12525-5-kuniyu@amazon.co.jp
When we close a listening socket, to migrate its connections to another
listener in the same reuseport group, we have to handle two kinds of child
sockets. One is that a listening socket has a reference to, and the other
is not.
The former is the TCP_ESTABLISHED/TCP_SYN_RECV sockets, and they are in the
accept queue of their listening socket. So we can pop them out and push
them into another listener's queue at close() or shutdown() syscalls. On
the other hand, the latter, the TCP_NEW_SYN_RECV socket is during the
three-way handshake and not in the accept queue. Thus, we cannot access
such sockets at close() or shutdown() syscalls. Accordingly, we have to
migrate immature sockets after their listening socket has been closed.
Currently, if their listening socket has been closed, TCP_NEW_SYN_RECV
sockets are freed at receiving the final ACK or retransmitting SYN+ACKs. At
that time, if we could select a new listener from the same reuseport group,
no connection would be aborted. However, we cannot do that because
reuseport_detach_sock() sets NULL to sk_reuseport_cb and forbids access to
the reuseport group from closed sockets.
This patch allows TCP_CLOSE sockets to remain in the reuseport group and
access it while any child socket references them. The point is that
reuseport_detach_sock() was called twice from inet_unhash() and
sk_destruct(). This patch replaces the first reuseport_detach_sock() with
reuseport_stop_listen_sock(), which checks if the reuseport group is
capable of migration. If capable, it decrements num_socks, moves the socket
backwards in socks[] and increments num_closed_socks. When all connections
are migrated, sk_destruct() calls reuseport_detach_sock() to remove the
socket from socks[], decrement num_closed_socks, and set NULL to
sk_reuseport_cb.
By this change, closed or shutdowned sockets can keep sk_reuseport_cb.
Consequently, calling listen() after shutdown() can cause EADDRINUSE or
EBUSY in inet_csk_bind_conflict() or reuseport_add_sock() which expects
such sockets not to have the reuseport group. Therefore, this patch also
loosens such validation rules so that a socket can listen again if it has a
reuseport group with num_closed_socks more than 0.
When such sockets listen again, we handle them in reuseport_resurrect(). If
there is an existing reuseport group (reuseport_add_sock() path), we move
the socket from the old group to the new one and free the old one if
necessary. If there is no existing group (reuseport_alloc() path), we
allocate a new reuseport group, detach sk from the old one, and free it if
necessary, not to break the current shutdown behaviour:
- we cannot carry over the eBPF prog of shutdowned sockets
- we cannot attach/detach an eBPF prog to/from listening sockets via
shutdowned sockets
Note that when the number of sockets gets over U16_MAX, we try to detach a
closed socket randomly to make room for the new listening socket in
reuseport_grow().
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/bpf/20210612123224.12525-4-kuniyu@amazon.co.jp
As noted in the following commit, a closed listener has to hold the
reference to the reuseport group for socket migration. This patch adds a
field (num_closed_socks) to struct sock_reuseport to manage closed sockets
within the same reuseport group. Moreover, this and the following commits
introduce some helper functions to split socks[] into two sections and keep
TCP_LISTEN and TCP_CLOSE sockets in each section. Like a double-ended
queue, we will place TCP_LISTEN sockets from the front and TCP_CLOSE
sockets from the end.
TCP_LISTEN----------> <-------TCP_CLOSE
+---+---+ --- +---+ --- +---+ --- +---+
| 0 | 1 | ... | i | ... | j | ... | k |
+---+---+ --- +---+ --- +---+ --- +---+
i = num_socks - 1
j = max_socks - num_closed_socks
k = max_socks - 1
This patch also extends reuseport_add_sock() and reuseport_grow() to
support num_closed_socks.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20210612123224.12525-3-kuniyu@amazon.co.jp
This commit adds a new sysctl option: net.ipv4.tcp_migrate_req. If this
option is enabled or eBPF program is attached, we will be able to migrate
child sockets from a listener to another in the same reuseport group after
close() or shutdown() syscalls.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Benjamin Herrenschmidt <benh@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20210612123224.12525-2-kuniyu@amazon.co.jp
The memblock_enforce_memory_limit() could change the memblock
range, so move the dram_end assignment after it in bootmem_init(),
then support mem= cmdline.
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
As a result of TSX deprecation, some processors always abort TSX
transactions by default after a microcode update.
When TSX feature cannot be used it is better to hide it. Clear CPUID.RTM
and CPUID.HLE bits when TSX transactions always abort.
[ bp: Massage commit message and comments. ]
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Tested-by: Neelima Krishnan <neelima.krishnan@intel.com>
Link: https://lkml.kernel.org/r/5209b3d72ffe5bd3cafdcc803f5b883f785329c3.1623704845.git-series.pawan.kumar.gupta@linux.intel.com
For some reason we ended up with cyclic dependency between snd_soc_wcd938x
and snd_soc_wcd938x_sdw modules.
Remove this cyclic dependency by handling them in respective modules.
Without this below error is reported during make modules_install
depmod: ERROR: Cycle detected: snd_soc_wcd938x -> snd_soc_wcd938x_sdw -> snd_soc_wcd938x
depmod: ERROR: Found 2 modules in dependency cycles!
Fixes: 0454422288 ("ASoC: codecs: wcd938x: add audio routing and Kconfig")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210615132829.23067-1-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch adds MI2S mixers to Quinary ports
Signed-off-by: Gabriel David <ultracoolguy@disroot.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210605022206.13226-5-ultracoolguy@disroot.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch adds support to Quinary MI2S ports supported in AFE.
Signed-off-by: Gabriel David <ultracoolguy@disroot.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210605022206.13226-4-ultracoolguy@disroot.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch adds support for the Quinary MI2S ports on LPASS.
Signed-off-by: Gabriel David <ultracoolguy@disroot.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210605022206.13226-3-ultracoolguy@disroot.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch adds bindings required for Quinary MI2S ports on AFE.
Signed-off-by: Gabriel David <ultracoolguy@disroot.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210605022206.13226-2-ultracoolguy@disroot.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Contains changes to consolidate audio card names, adds audio support on
Jetson Xavier NX and enables SMMU on Tegra194.
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Merge tag 'tegra-for-5.14-arm64-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/dt
arm64: tegra: Device tree changes for v5.14-rc1
Contains changes to consolidate audio card names, adds audio support on
Jetson Xavier NX and enables SMMU on Tegra194.
* tag 'tegra-for-5.14-arm64-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
arm64: tegra: Enable SMMU support on Tegra194
arm64: tegra: Hook up memory controller to SMMU on Tegra186
arm64: tegra: Use correct compatible string for Tegra186 SMMU
arm64: tegra: Audio graph sound card for Jetson Xavier NX
arm64: tegra: Consolidate audio card names
arm64: tegra: Add PMU node for Tegra194
Link: https://lore.kernel.org/r/20210611164437.3568059-6-thierry.reding@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
Enables the devfreq thermal support to allow using the devfreq device as
cooling device for the system.
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Merge tag 'tegra-for-5.14-arm-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/defconfig
ARM: tegra: Default configuration changes for v5.14-rc1
Enables the devfreq thermal support to allow using the devfreq device as
cooling device for the system.
* tag 'tegra-for-5.14-arm-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
ARM: tegra_defconfig: Enable CONFIG_DEVFREQ_THERMAL
Link: https://lore.kernel.org/r/20210611164437.3568059-5-thierry.reding@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
This contains various improvements (such as microphone detection and
thermal zones) for some older Tegra devices (such as the Nexus 7 or
the Acer A500).
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Merge tag 'tegra-for-5.14-arm-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/dt
ARM: tegra: Device tree changes for v5.14-rc1
This contains various improvements (such as microphone detection and
thermal zones) for some older Tegra devices (such as the Nexus 7 or
the Acer A500).
* tag 'tegra-for-5.14-arm-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
ARM: tegra: ouya: Enable memory frequency thermal throttling using ACTMON
ARM: tegra: nexus7: Enable memory frequency thermal throttling using ACTMON
ARM: tegra: Add cooling cells to ACTMON device-tree node
ARM: tegra: nexus7: Correct 3v3 regulator GPIO of PM269 variant
ARM: tegra: nexus7: Remove monitored-battery property
ARM: tegra: nexus7: Improve thermal zones
ARM: tegra: nexus7: Add i2c-thermtrip node
ARM: tegra: paz00: Add CPU thermal zone
ARM: tegra: wm8903: Fix polarity of headphones-detection GPIO in device-trees
ARM: tegra: Add reg property to Tegra20 EMC table device-tree nodes
ARM: tegra: acer-a500: Bump thermal trips by 10C
ARM: tegra: acer-a500: Specify proper voltage for WiFi SDIO bus
ARM: tegra: acer-a500: Improve microphone detection
Link: https://lore.kernel.org/r/20210611164437.3568059-4-thierry.reding@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
Earlier workaround added by
400816f60c ("perf/x86/intel: Implement support for TSX Force Abort")
for perf counter interactions [1] are not required on some client
systems which received a microcode update that deprecates TSX.
Bypass the perf workaround when such microcode is enumerated.
[1] [ bp: Look for document ID 604224, "Performance Monitoring Impact
of Intel Transactional Synchronization Extension Memory". Since
there's no way for us to have stable links to documents... ]
[ bp: Massage comment. ]
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Tested-by: Neelima Krishnan <neelima.krishnan@intel.com>
Link: https://lkml.kernel.org/r/e4d410f786946280ced02dd07c74e0a74f1d10cb.1623704845.git-series.pawan.kumar.gupta@linux.intel.com
These changes contain two minor fixes for the Tegra BPMP driver.
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Merge tag 'tegra-for-5.14-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/drivers
firmware: tegra: Changes for v5.14-rc1
These changes contain two minor fixes for the Tegra BPMP driver.
* tag 'tegra-for-5.14-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
firmware: tegra: bpmp: Fix Tegra234-only builds
firmware: tegra: Fix error return code in tegra210_bpmp_init()
Link: https://lore.kernel.org/r/20210611164437.3568059-3-thierry.reding@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
These changes implement the core power domain for the PMC, and fix a
couple of minor issues as well as add stubs to help some drivers be
compile tested more easily.
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Merge tag 'tegra-for-5.14-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/soc
soc/tegra: Changes for v5.14-rc1
These changes implement the core power domain for the PMC, and fix a
couple of minor issues as well as add stubs to help some drivers be
compile tested more easily.
* tag 'tegra-for-5.14-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
soc/tegra: fuse: Fix Tegra234-only builds
soc/tegra: fuse: Don't return -ENOMEM when allocate lookups failed
soc/tegra: regulators: Support core domain state syncing
soc/tegra: pmc: Add driver state syncing
soc/tegra: pmc: Add core power domain
soc/tegra: fuse: Add stubs needed for compile-testing
soc/tegra: Add devm_tegra_core_dev_init_opp_table()
soc/tegra: Add stub for soc_is_tegra()
soc/tegra: regulators: Bump voltages on system reboot
regulator: core: Add regulator_sync_voltage_rdev()
Link: https://lore.kernel.org/r/20210611164437.3568059-2-thierry.reding@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
This contains a conversion of the Tegra clock and reset controller
device tree bindings to the new json-schema format and adds the core
power domain to the PMC device tree bindings.
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Merge tag 'tegra-for-5.14-dt-bindings' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/dt
dt-bindings: Changes for v5.14-rc1
This contains a conversion of the Tegra clock and reset controller
device tree bindings to the new json-schema format and adds the core
power domain to the PMC device tree bindings.
* tag 'tegra-for-5.14-dt-bindings' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
dt-bindings: soc: tegra-pmc: Document core power domain
dt-bindings: clock: tegra: Convert to schema
Link: https://lore.kernel.org/r/20210611164437.3568059-1-thierry.reding@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
Add a link to the MStar tree on github.
Signed-off-by: Daniel Palmer <daniel@0x0f.com>
Reviewed-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
This adds the debug_ll uart for the PM UART found on armv7-based MStar
SoCs.
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Acked-by: Daniel Palmer <daniel@thingy.jp>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Mohammed Billoo <mohammed.billoo@gmail.com>
Signed-off-by: Daniel Palmer <daniel@0x0f.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Add support for the legacy Arasan sdhci controller on the BCM7211 and
related SoC's. This includes adding a .shutdown callback to increase
the power savings during S5.
Signed-off-by: Al Cooper <alcooperx@gmail.com>
Link: https://lore.kernel.org/r/20210602192758.38735-2-alcooperx@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Intel client processors that support the IA32_TSX_FORCE_ABORT MSR
related to perf counter interaction [1] received a microcode update that
deprecates the Transactional Synchronization Extension (TSX) feature.
The bit FORCE_ABORT_RTM now defaults to 1, writes to this bit are
ignored. A new bit TSX_CPUID_CLEAR clears the TSX related CPUID bits.
The summary of changes to the IA32_TSX_FORCE_ABORT MSR are:
Bit 0: FORCE_ABORT_RTM (legacy bit, new default=1) Status bit that
indicates if RTM transactions are always aborted. This bit is
essentially !SDV_ENABLE_RTM(Bit 2). Writes to this bit are ignored.
Bit 1: TSX_CPUID_CLEAR (new bit, default=0) When set, CPUID.HLE = 0
and CPUID.RTM = 0.
Bit 2: SDV_ENABLE_RTM (new bit, default=0) When clear, XBEGIN will
always abort with EAX code 0. When set, XBEGIN will not be forced to
abort (but will always abort in SGX enclaves). This bit is intended to
be used on developer systems. If this bit is set, transactional
atomicity correctness is not certain. SDV = Software Development
Vehicle (SDV), i.e. developer systems.
Performance monitoring counter 3 is usable in all cases, regardless of
the value of above bits.
Add support for a new CPUID bit - CPUID.RTM_ALWAYS_ABORT (CPUID 7.EDX[11])
- to indicate the status of always abort behavior.
[1] [ bp: Look for document ID 604224, "Performance Monitoring Impact
of Intel Transactional Synchronization Extension Memory". Since
there's no way for us to have stable links to documents... ]
[ bp: Massage and extend commit message. ]
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Tested-by: Neelima Krishnan <neelima.krishnan@intel.com>
Link: https://lkml.kernel.org/r/9add61915b4a4eedad74fbd869107863a28b428e.1623704845.git-series.pawan.kumar.gupta@linux.intel.com
- Add DT support for Toshiba Visconti5 PWM driver
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Merge tag 'visconti-arm-dt-for-v5.14' of https://git.kernel.org/pub/scm/linux/kernel/git/iwamatsu/linux-visconti into arm/dt
Visconti device tree updates for 5.14
- Add DT support for Toshiba Visconti5 PWM driver
* tag 'visconti-arm-dt-for-v5.14' of https://git.kernel.org/pub/scm/linux/kernel/git/iwamatsu/linux-visconti:
arm64: dts: visconti: Add PWM support for TMPV7708 SoC
Link: https://lore.kernel.org/r/20210614234654.2u3xetnn5rwhymwz@toshiba.co.jp
Signed-off-by: Olof Johansson <olof@lixom.net>
This adds DMA, NAND controllers, USB controller and PHY, RPM, L2CC,
thermal sensors and defines thermal zones. It them enables these for the
RB3011.
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Merge tag 'qcom-dts-for-5.14' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/dt
Qualcomm DTS updates for v5.14
This adds DMA, NAND controllers, USB controller and PHY, RPM, L2CC,
thermal sensors and defines thermal zones. It them enables these for the
RB3011.
* tag 'qcom-dts-for-5.14' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
ARM: dts: qcom: Enable NAND + USB for RB3011
ARM: dts: qcom: add L2CC and RPM for IPQ8064
ARM: dts: qcom: Add USB port definitions to ipq806x
ARM: dts: qcom: Add tsens details to ipq806x
ARM: dts: qcom: Add ADM DMA + NAND definitions to ipq806x
Link: https://lore.kernel.org/r/20210614223840.393224-1-bjorn.andersson@linaro.org
Signed-off-by: Olof Johansson <olof@lixom.net>
