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Sean Christopherson 187c8833de KVM: x86: Use rw_semaphore for APICv lock to allow vCPU parallelism
Use a rw_semaphore instead of a mutex to coordinate APICv updates so that
vCPUs responding to requests can take the lock for read and run in
parallel.  Using a mutex forces serialization of vCPUs even though
kvm_vcpu_update_apicv() only touches data local to that vCPU or is
protected by a different lock, e.g. SVM's ir_list_lock.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20211022004927.1448382-5-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-10-22 11:20:16 -04:00
arch KVM: x86: Use rw_semaphore for APICv lock to allow vCPU parallelism 2021-10-22 11:20:16 -04:00
block
certs
crypto
Documentation kvm: x86: mmu: Make NX huge page recovery period configurable 2021-10-22 05:19:28 -04:00
drivers Initial KVM RISC-V support 2021-10-05 04:19:24 -04:00
fs
include KVM: x86: Report host tsc and realtime values in KVM_GET_CLOCK 2021-10-18 14:43:44 -04:00
init
ipc
kernel
lib
LICENSES
mm
net
samples
scripts
security
sound
tools KVM: selftests: set CPUID before setting sregs in vcpu creation 2021-10-22 05:19:29 -04:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS RISC-V: KVM: Add MAINTAINERS entry 2021-10-04 16:14:10 +05:30
Makefile
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.