linux/arch/x86
Like Xu 1921f3aa92 KVM: x86: Use static calls to reduce kvm_pmu_ops overhead
Use static calls to improve kvm_pmu_ops performance, following the same
pattern and naming scheme used by kvm-x86-ops.h.

Here are the worst fenced_rdtsc() cycles numbers for the kvm_pmu_ops
functions that is most often called (up to 7 digits of calls) when running
a single perf test case in a guest on an ICX 2.70GHz host (mitigations=on):

		|	legacy	|	static call
------------------------------------------------------------
.pmc_idx_to_pmc	|	1304840	|	994872 (+23%)
.pmc_is_enabled	|	978670	|	1011750 (-3%)
.msr_idx_to_pmc	|	47828	|	41690 (+12%)
.is_valid_msr	|	28786	|	30108 (-4%)

Signed-off-by: Like Xu <likexu@tencent.com>
[sean: Handle static call updates in pmu.c, tweak changelog]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220329235054.3534728-5-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-13 13:37:45 -04:00
..
boot memcpy updates for v5.18-rc1 2022-03-26 12:19:04 -07:00
coco x86/coco: Add API to handle encryption mask 2022-02-23 19:14:29 +01:00
configs x86/config: Make the x86 defconfigs a bit more usable 2022-03-27 20:58:35 +02:00
crypto This push fixes the following issues: 2022-03-31 11:17:39 -07:00
entry Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
events asm-generic updates for 5.18 2022-03-23 18:03:08 -07:00
hyperv hyperv-next for 5.17 2022-01-16 15:53:00 +02:00
ia32 audit/stable-5.16 PR 20211101 2021-11-01 21:17:39 -07:00
include KVM: x86: Use static calls to reduce kvm_pmu_ops overhead 2022-04-13 13:37:45 -04:00
kernel x86/kvm: Don't waste kvmclock memory if there is nopv parameter 2022-04-13 13:37:19 -04:00
kvm KVM: x86: Use static calls to reduce kvm_pmu_ops overhead 2022-04-13 13:37:45 -04:00
lib A set of x86 fixes and updates: 2022-04-03 12:15:47 -07:00
math-emu x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
mm ptrace: Cleanups for v5.18 2022-03-28 17:29:53 -07:00
net Add support for Intel CET-IBT, available since Tigerlake (11th gen), which is a 2022-03-27 10:17:23 -07:00
pci PCI/sysfs: Find shadow ROM before static attribute initialization 2022-01-26 10:41:21 -06:00
platform objtool,efi: Update __efi64_thunk annotation 2022-03-15 10:32:32 +01:00
power x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
purgatory x86/purgatory: Remove -nostdlib compiler flag 2021-12-30 14:13:06 +01:00
ras
realmode - Flush *all* mappings from the TLB after switching to the trampoline 2022-01-10 09:51:38 -08:00
tools x86/build: Use the proper name CONFIG_FW_LOADER 2021-12-29 22:20:38 +01:00
um Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2022-04-01 19:57:03 -07:00
video
xen xen: branch for v5.18-rc1 2022-03-28 14:32:39 -07:00
.gitignore
Kbuild x86/cc: Move arch/x86/{kernel/cc_platform.c => coco/core.c} 2022-02-23 18:25:58 +01:00
Kconfig Revert the RT related signal changes. They need to be reworked and 2022-04-03 12:08:26 -07:00
Kconfig.assembler
Kconfig.cpu x86/mmx_32: Remove X86_USE_3DNOW 2021-12-11 09:09:45 +01:00
Kconfig.debug
Makefile x86: Remove toolchain check for X32 ABI capability 2022-03-15 10:32:48 +01:00
Makefile_32.cpu
Makefile.um