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authorSean Christopherson <seanjc@google.com>2023-02-08 20:42:30 +0000
committerPaolo Bonzini <pbonzini@redhat.com>2023-02-15 08:25:44 -0500
commit4b4191b8ae1278bde3642acaaef8f92810ed111a (patch)
treefd0aa814aee1e46ab851b7bf2a87d1f9a151f069 /arch/x86/kvm/irq_comm.c
parent4d7404e5ee0066e9a9e8268675de8a273b568b08 (diff)
perf/x86: Refuse to export capabilities for hybrid PMUs
Now that KVM disables vPMU support on hybrid CPUs, WARN and return zeros if perf_get_x86_pmu_capability() is invoked on a hybrid CPU. The helper doesn't provide an accurate accounting of the PMU capabilities for hybrid CPUs and needs to be enhanced if KVM, or anything else outside of perf, wants to act on the PMU capabilities. Cc: stable@vger.kernel.org Cc: Andrew Cooper <Andrew.Cooper3@citrix.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Link: https://lore.kernel.org/all/20220818181530.2355034-1-kan.liang@linux.intel.com Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20230208204230.1360502-3-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/irq_comm.c')
0 files changed, 0 insertions, 0 deletions