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From: Paolo Bonzini <pbonzini@redhat.com>
To: Jim Mattson <jmattson@google.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
	kvm list <kvm@vger.kernel.org>,
	Vitaly Kuznetsov <vkuznets@redhat.com>
Subject: Re: [PATCH v2] KVM: x86: omit absent pmu MSRs from MSR list
Date: Thu, 3 Oct 2019 22:12:51 +0200	[thread overview]
Message-ID: <d879b3a1-c5e8-00ba-4b80-e5da4dcceea7@redhat.com> (raw)
In-Reply-To: <CALMp9eSCB-wyLm-QYS-7gTcSeuWWCvgYL3iDEP0y6BM4cWMFag@mail.gmail.com>

On 03/10/19 20:23, Jim Mattson wrote:
> On Thu, Oct 3, 2019 at 10:38 AM Paolo Bonzini <pbonzini@redhat.com> wrote:
>>
>> On 03/10/19 19:20, Jim Mattson wrote:
>>> You've truncated the list I originally provided, so I think this need
>>> only go to MSR_ARCH_PERFMON_PERFCTR0 + 17. Otherwise, we could lose
>>> some valuable MSRs.
>>
>> This is v2, so it was meant to replace the patch that truncates the
>> list.  But I can include the other one too, perhaps even ask the x86
>> maintainers about decreasing INTEL_PMC_MAX_GENERIC to 18.
> 
> The list should definitely be truncated, since
> MSR_ARCH_PERFMON_EVENTSEL0 + 18 is IA32_PERF_STATUS.

Ok, thanks.

Paolo


      reply	other threads:[~2019-10-03 20:12 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-03 10:10 Paolo Bonzini
2019-10-03 17:20 ` Jim Mattson
2019-10-03 17:37   ` Paolo Bonzini
2019-10-03 18:23     ` Jim Mattson
2019-10-03 20:12       ` Paolo Bonzini [this message]

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