linux-kernel - Re: [PATCH v2 05/17] KVM: x86/pmu: Reprogram guest PEBS event to emulate guest PEBS counter

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Message-ID: <20201117144100.GK3121406@hirez.programming.kicks-ass.net>
Date:   Tue, 17 Nov 2020 15:41:00 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Like Xu <like.xu@...ux.intel.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>,
        Kan Liang <kan.liang@...ux.intel.com>, luwei.kang@...el.com,
        Thomas Gleixner <tglx@...utronix.de>, wei.w.wang@...el.com,
        Tony Luck <tony.luck@...el.com>,
        Stephane Eranian <eranian@...gle.com>,
        Mark Gross <mgross@...ux.intel.com>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 05/17] KVM: x86/pmu: Reprogram guest PEBS event to
 emulate guest PEBS counter

On Mon, Nov 09, 2020 at 10:12:42AM +0800, Like Xu wrote:
> +			/* Indicate PEBS overflow PMI to guest. */
> +			__set_bit(62, (unsigned long *)&pmu->global_status);

GLOBAL_STATUS_BUFFER_OVF_BIT