perf/x86/intel: Add Cooper Lake stepping to isolation_ucodes[]
Subsystems (3)
PATCH 1/1 perf/x86/intel: Add Cooper Lake stepping to isolation_ucodes[]
From: Kan Liang <[email protected]>
The intel_pebs_isolation quirk checks both model number and stepping. Cooper Lake has a different stepping (11) than the other Skylake Xeon. It cannot benefit from the optimization in commit 9b545c04abd4f ("perf/x86/kvm: Avoid unnecessary work in guest filtering").
Add the stepping of Cooper Lake into the isolation_ucodes[] table.
--- arch/x86/events/intel/core.c | 1 + 1 file changed, 1 insertion(+)
arch/x86/events/intel/core.c +1 -0
@@ -4908,6 +4908,7 @@ static const struct x86_cpu_desc isolation_ucodes[] = {INTEL_CPU_DESC (INTEL_FAM6_SKYLAKE_X ,5 ,0x00000000 ),INTEL_CPU_DESC (INTEL_FAM6_SKYLAKE_X ,6 ,0x00000000 ),INTEL_CPU_DESC (INTEL_FAM6_SKYLAKE_X ,7 ,0x00000000 ), +INTEL_CPU_DESC (INTEL_FAM6_SKYLAKE_X ,11 ,0x00000000 ),INTEL_CPU_DESC (INTEL_FAM6_SKYLAKE_L ,3 ,0x0000007c ),INTEL_CPU_DESC (INTEL_FAM6_SKYLAKE ,3 ,0x0000007c ), INTEL_CPU_DESC(INTEL_FAM6_KABYLAKE, 9, 0x0000004e),
Signature · 1 line
2.35.1
The following commit has been merged into the perf/urgent branch of tip:
The following commit has been merged into the perf/urgent branch of tip:
Commit-ID: 6f8faf471446844bb9c318e0340221049d5c19f4 Gitweb: https://git.kernel.org/tip/6f8faf471446844bb9c318e0340221049d5c19f4 Author: Kan Liang <[email protected]> AuthorDate: Mon, 31 Oct 2022 08:45:50 -07:00 Committer: Peter Zijlstra <[email protected]> CommitterDate: Wed, 02 Nov 2022 12:22:07 +01:00
perf/x86/intel: Add Cooper Lake stepping to isolation_ucodes[]
The intel_pebs_isolation quirk checks both model number and stepping. Cooper Lake has a different stepping (11) than the other Skylake Xeon. It cannot benefit from the optimization in commit 9b545c04abd4f ("perf/x86/kvm: Avoid unnecessary work in guest filtering").
Add the stepping of Cooper Lake into the isolation_ucodes[] table.
--- arch/x86/events/intel/core.c | 1 + 1 file changed, 1 insertion(+)
arch/x86/events/intel/core.c +1 -0
@@ -4911,6 +4911,7 @@ static const struct x86_cpu_desc isolation_ucodes[] = {INTEL_CPU_DESC (INTEL_FAM6_SKYLAKE_X ,5 ,0x00000000 ),INTEL_CPU_DESC (INTEL_FAM6_SKYLAKE_X ,6 ,0x00000000 ),INTEL_CPU_DESC (INTEL_FAM6_SKYLAKE_X ,7 ,0x00000000 ), +INTEL_CPU_DESC (INTEL_FAM6_SKYLAKE_X ,11 ,0x00000000 ),INTEL_CPU_DESC (INTEL_FAM6_SKYLAKE_L ,3 ,0x0000007c ),INTEL_CPU_DESC (INTEL_FAM6_SKYLAKE ,3 ,0x0000007c ), INTEL_CPU_DESC(INTEL_FAM6_KABYLAKE, 9, 0x0000004e),