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Message-ID: <X/87pChioUE7hsK/@hirez.programming.kicks-ass.net>
Date: Wed, 13 Jan 2021 19:27:48 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: Like Xu <like.xu@...ux.intel.com>
Cc: Paolo Bonzini <pbonzini@...hat.com>, eranian@...gle.com,
kvm@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
Sean Christopherson <seanjc@...gle.com>,
Thomas Gleixner <tglx@...utronix.de>,
Vitaly Kuznetsov <vkuznets@...hat.com>,
Wanpeng Li <wanpengli@...cent.com>,
Jim Mattson <jmattson@...gle.com>,
Joerg Roedel <joro@...tes.org>,
Andi Kleen <andi@...stfloor.org>,
Kan Liang <kan.liang@...ux.intel.com>, wei.w.wang@...el.com,
luwei.kang@...el.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 04/17] perf: x86/ds: Handle guest PEBS overflow PMI
and inject it to guest
On Wed, Jan 13, 2021 at 07:22:09PM +0100, Peter Zijlstra wrote:
> Again; for the virt illiterate people here (me); why is it expensive to
> check guest DS?
Remember, you're trying to get someone that thinks virt is the devil's
work (me) to review virt patches. You get to spell things out in detail.
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