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([2001:b07:6468:f312:9af8:e5f5:7516:fa89]) by smtp.googlemail.com with ESMTPSA id x2-20020a170906b08200b006feb4490600sm5450529ejy.213.2022.05.25.07.13.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 25 May 2022 07:13:39 -0700 (PDT) Message-ID: Date: Wed, 25 May 2022 16:13:38 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: [PATCH RESEND v12 00/17] KVM: x86/pmu: Add basic support to enable guest PEBS via DS Content-Language: en-US To: Maxim Levitsky , Like Xu Cc: Sean Christopherson , Wanpeng Li , Joerg Roedel , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Jim Mattson , Vitaly Kuznetsov References: <20220411101946.20262-1-likexu@tencent.com> <87fsl5u3bg.fsf@redhat.com> <874k1ltw9y.fsf@redhat.com> <0848a2da-c9cf-6973-c774-ff16c3e8a248@redhat.com> <289d0c88-36a0-afd4-4d47-f2db3fb63654@gmail.com> <48b495c5610d25596a268c71b627b2e2136ac0bd.camel@redhat.com> From: Paolo Bonzini In-Reply-To: <48b495c5610d25596a268c71b627b2e2136ac0bd.camel@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/25/22 16:12, Maxim Levitsky wrote: > FYI, this patch series also break 'msr' test in kvm-unit tests. > (kvm/queue of today, and master of the kvm-unit-tests repo) > > The test tries to set the MSR_IA32_MISC_ENABLE to 0x400c51889 and gets #GP. > > > Commenting this out, gets rid of #GP, but test still fails with unexpected result > > if (!msr_info->host_initiated && > ((old_val ^ data) & MSR_IA32_MISC_ENABLE_PEBS_UNAVAIL)) > return 1; > > > > > It is very possible that the test is broken, I'll check this later. Yes, for that I've sent a patch already: https://lore.kernel.org/kvm/20220520183207.7952-1-pbonzini@redhat.com/ Paolo