Message-ID: <0815b30f-c0e5-4261-df03-bd82d69b05c7@gmail.com>
Date:   Fri, 10 Dec 2021 18:20:36 +0800
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To:     Paolo Bonzini <pbonzini@redhat.com>,
        Jim Mattson <jmattson@google.com>
Cc:     Sean Christopherson <seanjc@google.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        Wanpeng Li <wanpengli@tencent.com>,
        Joerg Roedel <joro@8bytes.org>, kvm@vger.kernel.org,
        linux-kernel@vger.kernel.org, Like Xu <likexu@tencent.com>,
        linux-perf-users@vger.kernel.org
References: <20211130074221.93635-1-likexu@tencent.com>
 <20211130074221.93635-2-likexu@tencent.com>
 <CALMp9eT05nb56b16KkybvGSTYMhkRusQnNL4aWFU8tsets0O2w@mail.gmail.com>
 <8ca78cd6-12ad-56c4-ad73-e88757364ba9@redhat.com>
From:   Like Xu <like.xu.linux@gmail.com>
Organization: Tencent
Subject: Re: [PATCH v2 1/6] KVM: x86/pmu: Setup pmc->eventsel for fixed PMCs
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On 10/12/2021 2:49 am, Paolo Bonzini wrote:
> 
> or we modify find_fixed_event and its caller to support PERF_TYPE_RAW
> counters, and then add support for the IceLake TOPDOWN.SLOTS fixed
> counter.

It looks like the TOPDOWN approach from "Yasin Ahmad"
has recently been widely advertised among developers.

But I still need bandwidth to clean up some perf driver stuff
in order to enable topdown counter smoothly in the guest.

cc linux-perf-users@vger.kernel.org for user voices.

> 
> What's your preference?
> 
> Paolo