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[34.168.104.7]) by smtp.gmail.com with ESMTPSA id n11-20020a17090a394b00b001fb18855440sm1511160pjf.31.2022.08.31.09.33.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 31 Aug 2022 09:33:30 -0700 (PDT) Date: Wed, 31 Aug 2022 16:33:27 +0000 From: Sean Christopherson To: Maxim Levitsky Cc: Paolo Bonzini , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Suravee Suthikulpanit , Li RongQing Subject: Re: [PATCH 02/19] KVM: SVM: Don't put/load AVIC when setting virtual APIC mode Message-ID: References: <20220831003506.4117148-1-seanjc@google.com> <20220831003506.4117148-3-seanjc@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Spam-Status: No, score=-17.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE,USER_IN_DEF_DKIM_WL,USER_IN_DEF_SPF_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 On Wed, Aug 31, 2022, Maxim Levitsky wrote: > > @@ -1118,6 +1107,16 @@ void avic_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu) > > avic_deactivate_vmcb(svm); > > } > > vmcb_mark_dirty(vmcb, VMCB_AVIC); > > +} > > + > > +void avic_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu) > > +{ > > + bool activated = kvm_vcpu_apicv_active(vcpu); > > + > > + if (!enable_apicv) > > + return; > > + > > + avic_set_virtual_apic_mode(vcpu); > > This call is misleading - this will usually be called > when avic mode didn't change - I think we need a better name for > avic_set_virtual_apic_mode. I don't disagree, but I'm having trouble coming up with a succinct alternative. The helper primarily configures the VMCB, but the call to avic_apicv_post_state_restore() makes avic_refresh_vmcb_controls() undesirable. Maybe avic_refresh_virtual_apic_mode()?