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([2001:b07:6468:f312:8501:6b03:f18c:74f8]) by smtp.gmail.com with ESMTPSA id k17sm34812701wrq.83.2019.07.19.15.16.21 (version=TLS1_3 cipher=AEAD-AES128-GCM-SHA256 bits=128/128); Fri, 19 Jul 2019 15:16:22 -0700 (PDT) To: Eduardo Habkost References: <20190718134537.22356-1-den@openvz.org> <20190719205358.GB26800@habkost.net> <9583f8ad-67c8-d351-3763-4ede9fbf4acc@redhat.com> <20190719220550.GC26800@habkost.net> From: Paolo Bonzini Openpgp: preference=signencrypt Message-ID: <2993221f-173e-490c-c556-778b627543e8@redhat.com> Date: Sat, 20 Jul 2019 00:16:21 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190719220550.GC26800@habkost.net> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.85.128.65 Subject: Re: [Qemu-devel] [PATCH 1/1] x86: add CPU flags supported inside libvirt X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Krempa , =?UTF-8?Q?Daniel_P=2e_Berrang=c3=a9?= , qemu-devel@nongnu.org, Nikolay Shirokovskiy , "Denis V. Lunev" , Jiri Denemark , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 20/07/19 00:05, Eduardo Habkost wrote: >> Actually KVM does not mark it as supported: >> >> const u32 kvm_cpuid_7_0_ebx_x86_features = >> F(FSGSBASE) | F(BMI1) | F(HLE) | F(AVX2) | F(SMEP) | >> F(BMI2) | F(ERMS) | f_invpcid | F(RTM) | f_mpx | F(RDSEED) | >> F(ADX) | F(SMAP) | F(AVX512IFMA) | F(AVX512F) | F(AVX512PF) | >> F(AVX512ER) | F(AVX512CD) | F(CLFLUSHOPT) | F(CLWB) | F(AVX512DQ) | >> F(SHA_NI) | F(AVX512BW) | F(AVX512VL) | f_intel_pt; > We can still add the feature name if we also set it on > .unmigratable_features, but I don't see why it would be useful. > Is anybody working to support exposing RDT-M to guests? I don't think so. Paolo