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Subject: [tip: perf/urgent] perf/x86/intel: Add Cooper Lake stepping to
isolation_ucodes[]
Cc: Kan Liang <kan.liang@linux.intel.com>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
stable@vger.kernel.org, x86@kernel.org,
linux-kernel@vger.kernel.org
In-Reply-To: <20221031154550.571663-1-kan.liang@linux.intel.com>
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[tip:,perf/urgent] perf/x86/intel: Add Cooper Lake stepping to isolation_ucodes[]
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Commit Message
tip-bot2 for Thomas Gleixner
Nov. 2, 2022, 10:23 p.m. UTC
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 <kan.liang@linux.intel.com>
AuthorDate: Mon, 31 Oct 2022 08:45:50 -07:00
Committer: Peter Zijlstra <peterz@infradead.org>
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.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20221031154550.571663-1-kan.liang@linux.intel.com
---
arch/x86/events/intel/core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c index a646a5f..1b92bf0 100644 --- a/arch/x86/events/intel/core.c +++ b/arch/x86/events/intel/core.c @@ -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),