linux-kernel - Re: [PATCH v2 2/6] KVM: x86/pmu: Refactoring find_arch_event() to pmc_perf_hw

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Message-ID: <3bedc79a-5e60-677c-465b-3bc8aa2daad8@gmail.com>
Date:   Thu, 10 Feb 2022 19:28:56 +0800
From:   Like Xu <like.xu.linux@...il.com>
To:     "Bangoria, Ravikumar" <ravi.bangoria@....com>,
        Kim Phillips <kim.phillips@....com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, David Dunn <daviddunn@...gle.com>,
        Stephane Eranian <eranian@...gle.com>,
        Jim Mattson <jmattson@...gle.com>
Subject: Re: [PATCH v2 2/6] KVM: x86/pmu: Refactoring find_arch_event() to
 pmc_perf_hw_id()

cc Kim and Ravi to help confirm more details about this change.

On 10/2/2022 3:30 am, Jim Mattson wrote:
> By the way, the following events from amd_event_mapping[] are not
> listed in the Milan PPR:
> { 0x7d, 0x07, PERF_COUNT_HW_CACHE_REFERENCES }
> { 0x7e, 0x07, PERF_COUNT_HW_CACHE_MISSES }
> { 0xd0, 0x00, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND }
> { 0xd1, 0x00, PERF_COUNT_HW_STALLED_CYCLES_BACKEND }
> 
> Perhaps we should build a table based on amd_f17h_perfmon_event_map[]
> for newer AMD processors?