linux-kernel - Re: [PATCH v6 01/20] KVM: x86/pmu: Don't allow exposing unsupported architectural events

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Message-ID: <ZUj7jj-8pzvMDXDA@google.com>
Date:   Mon, 6 Nov 2023 06:43:26 -0800
From:   Sean Christopherson <seanjc@...gle.com>
To:     Jim Mattson <jmattson@...gle.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Kan Liang <kan.liang@...ux.intel.com>,
        Dapeng Mi <dapeng1.mi@...ux.intel.com>,
        Jinrong Liang <cloudliang@...cent.com>,
        Like Xu <likexu@...cent.com>,
        Aaron Lewis <aaronlewis@...gle.com>
Subject: Re: [PATCH v6 01/20] KVM: x86/pmu: Don't allow exposing unsupported
 architectural events

On Sat, Nov 04, 2023, Jim Mattson wrote:
> On Fri, Nov 3, 2023 at 5:02 PM Sean Christopherson <seanjc@...gle.com> wrote:
> >
> > Hide architectural events that unsupported according to guest CPUID *or*
> > hardware, i.e. don't let userspace advertise and potentially program
> > unsupported architectural events.
> 
> The bitmask, pmu->available_event_types, is only used in
> intel_hw_event_available(). As discussed
> (https://lore.kernel.org/kvm/ZUU12-TUR_1cj47u@google.com/),
> intel_hw_event_available() should go away.

Ah drat, I completely forgot about this patch when I added the patch to remove
intel_hw_event_available().