Re: [PATCH v3 04/17] perf: x86/ds: Handle guest PEBS overflow PMI and inject it to guest

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Subject: Re: [PATCH v3 04/17] perf: x86/ds: Handle guest PEBS overflow PMI and inject it to guest
From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Date: Wed, 13 Jan 2021 19:27:48 +0100
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>, eranian@xxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, Ingo Molnar <mingo@xxxxxxxxxx>, Sean Christopherson <seanjc@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>, Wanpeng Li <wanpengli@xxxxxxxxxxx>, Jim Mattson <jmattson@xxxxxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, Andi Kleen <andi@xxxxxxxxxxxxxx>, Kan Liang <kan.liang@xxxxxxxxxxxxxxx>, wei.w.wang@xxxxxxxxx, luwei.kang@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <X/86UWuV/9yt14hQ@hirez.programming.kicks-ass.net>
References: <20210104131542.495413-1-like.xu@linux.intel.com> <20210104131542.495413-5-like.xu@linux.intel.com> <X/86UWuV/9yt14hQ@hirez.programming.kicks-ass.net>

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.

References:
- [PATCH v3 00/17] KVM: x86/pmu: Add support to enable Guest PEBS via DS
  - From: Like Xu
- [PATCH v3 04/17] perf: x86/ds: Handle guest PEBS overflow PMI and inject it to guest
  - From: Like Xu
- Re: [PATCH v3 04/17] perf: x86/ds: Handle guest PEBS overflow PMI and inject it to guest
  - From: Peter Zijlstra

Prev by Date: Re: [PATCH V1 3/5] vfio: detect closed container
Next by Date: Re: [PATCH 1/2] KVM: x86: introduce definitions to support static calls for kvm_x86_ops
Previous by thread: Re: [PATCH v3 04/17] perf: x86/ds: Handle guest PEBS overflow PMI and inject it to guest
Next by thread: Re: [PATCH v3 04/17] perf: x86/ds: Handle guest PEBS overflow PMI and inject it to guest
Index(es):
- Date
- Thread

[Index of Archives] [KVM ARM] [KVM ia64] [KVM ppc] [Virtualization Tools] [Spice Development] [Libvirt] [Libvirt Users] [Linux USB Devel] [Linux Audio Users] [Yosemite Questions] [Linux Kernel] [Linux SCSI] [XFree86]