Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Fri, 30 Jun 2023 13:14:18 +0200
From:   Roman Kagan <rkagan@amazon.de>
To:     Sean Christopherson <seanjc@google.com>
CC:     Jim Mattson <jmattson@google.com>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Eric Hankland <ehankland@google.com>, <kvm@vger.kernel.org>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Like Xu <likexu@tencent.com>, <x86@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        <linux-kernel@vger.kernel.org>, "H. Peter Anvin" <hpa@zytor.com>,
        "Borislav Petkov" <bp@alien8.de>, Ingo Molnar <mingo@redhat.com>,
        Mingwei Zhang <mizhang@google.com>
Subject: Re: [PATCH] KVM: x86: vPMU: truncate counter value to allowed width
Message-ID: <ZJ65CiW0eEL2mGg8@u40bc5e070a0153.ant.amazon.com>
Mail-Followup-To: Roman Kagan <rkagan@amazon.de>,
        Sean Christopherson <seanjc@google.com>,
        Jim Mattson <jmattson@google.com>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Eric Hankland <ehankland@google.com>, kvm@vger.kernel.org,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Like Xu <likexu@tencent.com>, x86@kernel.org,
        Thomas Gleixner <tglx@linutronix.de>, linux-kernel@vger.kernel.org,
        "H. Peter Anvin" <hpa@zytor.com>, Borislav Petkov <bp@alien8.de>,
        Ingo Molnar <mingo@redhat.com>, Mingwei Zhang <mizhang@google.com>
References: <20230504120042.785651-1-rkagan@amazon.de>
 <ZH6DJ8aFq/LM6Bk9@google.com>
 <CALMp9eS3F08cwUJbKjTRAEL0KyZ=MC==YSH+DW-qsFkNfMpqEQ@mail.gmail.com>
 <ZJ4dmrQSduY8aWap@google.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Disposition: inline
In-Reply-To: <ZJ4dmrQSduY8aWap@google.com>
Content-Transfer-Encoding: base64
Precedence: bulk
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==