perf/x86/intel: Add Cooper Lake stepping to isolation_ucodes[]
authorKan Liang <kan.liang@linux.intel.com>
Mon, 31 Oct 2022 15:45:50 +0000 (08:45 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 10 Nov 2022 17:14:27 +0000 (18:14 +0100)
commit29d106d086d2f39f8635f402004d1c17a6205583
treed177c3cf2727e97cbd42d19e9a96dc9979ccdbb8
parent98f6e7c337036dff5a851f557950f5846d3f7d73
perf/x86/intel: Add Cooper Lake stepping to isolation_ucodes[]

commit 6f8faf471446844bb9c318e0340221049d5c19f4 upstream.

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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/x86/events/intel/core.c