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H A Dds.cdiff 13738a3647368f7f600b30d241779bcd2a3ebbfd Wed Nov 09 02:28:02 CST 2022 Like Xu <likexu@tencent.com> perf/x86/intel: Expose EPT-friendly PEBS for SPR and future models

According to Intel SDM, the EPT-friendly PEBS is supported by all the
platforms after ICX, ADL and the future platforms with PEBS format 5.

Currently the only in-kernel user of this capability is KVM, which has
very limited support for hybrid core pmu, so ADL and its successors do
not currently expose this capability. When both hybrid core and PEBS
format 5 are present, KVM will decide on its own merits.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-perf-users@vger.kernel.org
Suggested-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Like Xu <likexu@tencent.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221109082802.27543-4-likexu@tencent.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
H A Dcore.cdiff 13738a3647368f7f600b30d241779bcd2a3ebbfd Wed Nov 09 02:28:02 CST 2022 Like Xu <likexu@tencent.com> perf/x86/intel: Expose EPT-friendly PEBS for SPR and future models

According to Intel SDM, the EPT-friendly PEBS is supported by all the
platforms after ICX, ADL and the future platforms with PEBS format 5.

Currently the only in-kernel user of this capability is KVM, which has
very limited support for hybrid core pmu, so ADL and its successors do
not currently expose this capability. When both hybrid core and PEBS
format 5 are present, KVM will decide on its own merits.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-perf-users@vger.kernel.org
Suggested-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Like Xu <likexu@tencent.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221109082802.27543-4-likexu@tencent.com
Signed-off-by: Sean Christopherson <seanjc@google.com>