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Sean Christopherson f15756428d KVM: x86: Skip APICv update if APICv is disable at the module level 
Bail from the APICv update paths _before_ taking apicv_update_lock if
APICv is disabled at the module level.  kvm_request_apicv_update() in
particular is invoked from multiple paths that can be reached without
APICv being enabled, e.g. svm_enable_irq_window(), and taking the
rw_sem for write when APICv is disabled may introduce unnecessary
contention and stalls.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20211208015236.1616697-25-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-02-10 13:47:09 -05:00
arch
KVM: x86: Skip APICv update if APICv is disable at the module level
2022-02-10 13:47:09 -05:00
block
block: bio-integrity: Advance seed correctly for larger interval sizes
2022-02-03 21:09:24 -07:00
certs
certs: Fix build error when CONFIG_MODULE_SIG_KEY is empty
2022-01-23 00:08:44 +09:00
crypto
lib/crypto: blake2s: avoid indirect calls to compression function for Clang CFI
2022-02-04 19:22:32 +01:00
Documentation
Merge tag 'for-linus-5.17a-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
2022-02-05 10:40:17 -08:00
drivers
Merge tag 'irq_urgent_for_v5.17_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2022-02-06 10:00:40 -08:00
fs
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
2022-02-06 10:34:45 -08:00
include
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
2022-02-06 10:34:45 -08:00
init
lib/stackdepot: allow optional init and stack_table allocation by kvmalloc()
2022-01-22 08:33:37 +02:00
ipc
ipc/sem: do not sleep with a spin lock held
2022-02-04 09:25:05 -08:00
kernel
Merge tag 'perf_urgent_for_v5.17_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2022-02-06 10:11:14 -08:00
lib
lib/crypto: blake2s: avoid indirect calls to compression function for Clang CFI
2022-02-04 19:22:32 +01:00
LICENSES
LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers
2021-12-16 14:33:10 +01:00
mm
mm/kmemleak: avoid scanning potential huge holes
2022-02-04 09:25:05 -08:00
net
Merge tag 'ceph-for-5.17-rc3' of git://github.com/ceph/ceph-client
2022-02-04 09:54:02 -08:00
samples
Merge branch 'akpm' (patches from Andrew)
2022-01-20 10:41:01 +02:00
scripts
ftrace: Have architectures opt-in for mcount build time sorting
2022-01-27 19:15:44 -05:00
security
Merge tag 'selinux-pr-20220203' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
2022-02-03 16:44:12 -08:00
sound
Merge tag 'asoc-fix-v5.17-rc2' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
2022-02-01 16:52:54 +01:00
tools
Merge tag 'perf-tools-fixes-for-v5.17-2022-02-06' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
2022-02-06 10:18:23 -08:00
usr
kbuild: remove include/linux/cyclades.h from header file check
2022-01-27 08:51:08 +01:00
virt
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2022-01-28 19:00:26 +02:00
.clang-format
genirq/msi: Make interrupt allocation less convoluted
2021-12-16 22:22:20 +01:00
.cocciconfig
scripts: add Linux .cocciconfig for coccinelle
2016-07-22 12:13:39 +02:00
.get_maintainer.ignore
Opt out of scripts/get_maintainer.pl
2019-05-16 10:53:40 -07:00
.gitattributes
.gitattributes: use 'dts' diff driver for dts files
2019-12-04 19:44:11 -08:00
.gitignore
.gitignore: ignore only top-level modules.builtin
2021-05-02 00:43:35 +09:00
.mailmap
mailmap: update Christian Brauner's email address
2022-02-01 11:21:31 -08:00
COPYING
COPYING: state that all contributions really are covered by this file
2020-02-10 13:32:20 -08:00
CREDITS
MAINTAINERS: Removing Ohad from remoteproc/rpmsg maintenance
2021-12-08 10:09:40 -07:00
Kbuild
kbuild: rename hostprogs-y/always to hostprogs/always-y
2020-02-04 01:53:07 +09:00
Kconfig
kbuild: ensure full rebuild when the compiler is updated
2020-05-12 13:28:33 +09:00
MAINTAINERS
Merge tag 'ata-5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
2022-02-04 11:52:37 -08:00
Makefile
Linux 5.17-rc3
2022-02-06 12:20:50 -08:00
README
Drop all 00-INDEX files from Documentation/
2018-09-09 15:08:58 -06:00

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.
Description
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