linux-kernel - Re: [PATCH] KVM: x86: Adjust counter sample period after a wrmsr

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Message-ID: <CAOyeoRX8kXD4nHGCLk=pV2EHS4t9wykV5tYDfgKkTLBcN5=GGw@mail.gmail.com>
Date:   Mon, 24 Feb 2020 16:08:04 -0800
From:   Eric Hankland <ehankland@...gle.com>
To:     Like Xu <like.xu@...ux.intel.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Jim Mattson <jmattson@...gle.com>,
        Peter Shier <pshier@...gle.com>, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Subject: Re: [PATCH] KVM: x86: Adjust counter sample period after a wrmsr

Hi Like -

Thanks for the feedback - is your recommendation to do the read and
period change at the same time and only take the lock once or is there
another way around this while still handling writes correctly?

Eric