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Peter Anvin" , x86@kernel.org, Dave Hansen , Borislav Petkov , Ingo Molnar , Thomas Gleixner , Jim Mattson Content-Type: text/plain; charset="utf-8" X-Spam-Status: No, score=-9.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Fri, 20 Oct 2023 15:56:58 -0700 (PDT) On Wed, 04 Oct 2023 20:12:37 -0700, Jim Mattson wrote: > Define an X86_FEATURE_* flag for CPUID.80000021H:EAX.[bit 1], and > advertise the feature to userspace via KVM_GET_SUPPORTED_CPUID. > > Per AMD's "Processor Programming Reference (PPR) for AMD Family 19h > Model 61h, Revision B1 Processors (56713-B1-PUB)," this CPUID bit > indicates that a WRMSR to MSR_FS_BASE, MSR_GS_BASE, or > MSR_KERNEL_GS_BASE is non-serializing. This is a change in previously > architected behavior. > > [...] Applied to kvm-x86 misc, thanks! [1/1] x86: KVM: Add feature flag for CPUID.80000021H:EAX[bit 1] https://github.com/kvm-x86/linux/commit/329369caeccb -- https://github.com/kvm-x86/linux/tree/next