linux-kernel - Re: [PATCH v8 00/13] KVM: arm64: PMU: Allow userspace to limit the number of PMCs on vCPU

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Message-ID: <ZTgZJNbtzyGcwhwt@linux.dev>
Date:   Tue, 24 Oct 2023 19:21:08 +0000
From:   Oliver Upton <oliver.upton@...ux.dev>
To:     Marc Zyngier <maz@...nel.org>
Cc:     Raghavendra Rao Ananta <rananta@...gle.com>,
        Alexandru Elisei <alexandru.elisei@....com>,
        James Morse <james.morse@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Zenghui Yu <yuzenghui@...wei.com>,
        Shaoqin Huang <shahuang@...hat.com>,
        Jing Zhang <jingzhangos@...gle.com>,
        Reiji Watanabe <reijiw@...gle.com>,
        Colton Lewis <coltonlewis@...gle.com>,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH v8 00/13] KVM: arm64: PMU: Allow userspace to limit the
 number of PMCs on vCPU

On Mon, Oct 23, 2023 at 07:35:44PM +0100, Marc Zyngier wrote:
> On Fri, 20 Oct 2023 22:40:40 +0100,
> Raghavendra Rao Ananta <rananta@...gle.com> wrote:
> > 
> > Hello,
> > 
> > The goal of this series is to allow userspace to limit the number
> > of PMU event counters on the vCPU.  We need this to support migration
> > across systems that implement different numbers of counters.
> 
> FWIW, I've pushed out a branch[1] with a set of fixes that address
> some of the comments I had on this series. Feel free to squash them in
> your series as you see fit.

I did a second round of fixes on top of what Marc has and pushed that to
a branch [*]. If everything looks good I'll take it for 6.7.

[*] https://git.kernel.org/pub/scm/linux/kernel/git/oupton/linux.git/log/?h=kvm-arm64/pmu_pmcr_n

-- 
Thanks,
Oliver