linux-kernel - Re: [PATCH 0/6] KVM: x86/pmu: Misc PMU MSR fixes

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Date:   Sat, 28 Jan 2023 00:07:17 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Sean Christopherson <seanjc@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Aaron Lewis <aaronlewis@...gle.com>,
        Weijiang Yang <weijiang.yang@...el.com>,
        Like Xu <likexu@...cent.com>
Subject: Re: [PATCH 0/6] KVM: x86/pmu: Misc PMU MSR fixes

On Tue, 24 Jan 2023 23:48:59 +0000, Sean Christopherson wrote:
> Fix a handful of minor PMU MSR issues, mostly related to KVM's reporting
> and handling of MSRs when the PMU is disabled.  E.g. running the
> state_test selftest with enable_pmu=0 fails because KVM tells userspace
> to save/restore the fixed counter MSRs, but then rejects attempts to
> access said MSRs from userspace.
> 
> 
> [...]

Applied to kvm-x86 pmu.  As mentioned in the cover letter (trimmed by b4),
I'll yank these out of the queue if any objects and/or there are problems.

[1/6] KVM: x86/pmu: Cap kvm_pmu_cap.num_counters_gp at KVM's internal max
      https://github.com/kvm-x86/linux/commit/8911ce66697e
[2/6] KVM: x86/pmu: Gate all "unimplemented MSR" prints on report_ignored_msrs
      https://github.com/kvm-x86/linux/commit/e76ae52747a8
[3/6] KVM: x86/pmu: Use separate array for defining "PMU MSRs to save"
      https://github.com/kvm-x86/linux/commit/2374b7310b66
[4/6] KVM: x86/pmu: Don't tell userspace to save PMU MSRs if PMU is disabled
      https://github.com/kvm-x86/linux/commit/c3531edc79a7
[5/6] KVM: x86/pmu: Don't tell userspace to save MSRs for non-existent fixed PMCs
      https://github.com/kvm-x86/linux/commit/e33b6d79acac
[6/6] KVM: x86/pmu: Provide "error" semantics for unsupported-but-known PMU MSRs
      https://github.com/kvm-x86/linux/commit/2de154f541fc

--
https://github.com/kvm-x86/linux/tree/next
https://github.com/kvm-x86/linux/tree/fixes