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Sun, 19 Nov 2023 09:35:43 -0800 (PST) X-Google-Smtp-Source: AGHT+IF1D/pZYBnGnvh++rCaYFlneml3ZmOhl6osF8W+ugDq2SFLA+hrWYaO4SLyH2RCXs8cFD5JUg== X-Received: by 2002:a2e:9b18:0:b0:2c8:7192:800 with SMTP id u24-20020a2e9b18000000b002c871920800mr3134533lji.51.1700415343158; Sun, 19 Nov 2023 09:35:43 -0800 (PST) Received: from starship ([77.137.131.4]) by smtp.gmail.com with ESMTPSA id c20-20020a7bc854000000b0040a43d458c9sm14662541wml.25.2023.11.19.09.35.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 19 Nov 2023 09:35:42 -0800 (PST) Message-ID: <325fd3126a72c926b9d8d0ee060f90ce6d8a582e.camel@redhat.com> Subject: Re: [PATCH 7/9] KVM: x86: Shuffle code to prepare for dropping guest_cpuid_has() From: Maxim Levitsky To: Sean Christopherson , Paolo Bonzini Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org Date: Sun, 19 Nov 2023 19:35:40 +0200 In-Reply-To: <20231110235528.1561679-8-seanjc@google.com> References: <20231110235528.1561679-1-seanjc@google.com> <20231110235528.1561679-8-seanjc@google.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.36.5 (3.36.5-2.fc32) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2023-11-10 at 15:55 -0800, Sean Christopherson wrote: > Move the implementations of guest_has_{spec_ctrl,pred_cmd}_msr() down > below guest_cpu_cap_has() so that their use of guest_cpuid_has() can be > replaced with calls to guest_cpu_cap_has(). > > No functional change intended. > > Signed-off-by: Sean Christopherson > --- > arch/x86/kvm/cpuid.h | 30 +++++++++++++++--------------- > 1 file changed, 15 insertions(+), 15 deletions(-) > > diff --git a/arch/x86/kvm/cpuid.h b/arch/x86/kvm/cpuid.h > index 1707ef10b269..bebf94a69630 100644 > --- a/arch/x86/kvm/cpuid.h > +++ b/arch/x86/kvm/cpuid.h > @@ -163,21 +163,6 @@ static inline int guest_cpuid_stepping(struct kvm_vcpu *vcpu) > return x86_stepping(best->eax); > } > > -static inline bool guest_has_spec_ctrl_msr(struct kvm_vcpu *vcpu) > -{ > - return (guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL) || > - guest_cpuid_has(vcpu, X86_FEATURE_AMD_STIBP) || > - guest_cpuid_has(vcpu, X86_FEATURE_AMD_IBRS) || > - guest_cpuid_has(vcpu, X86_FEATURE_AMD_SSBD)); > -} > - > -static inline bool guest_has_pred_cmd_msr(struct kvm_vcpu *vcpu) > -{ > - return (guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL) || > - guest_cpuid_has(vcpu, X86_FEATURE_AMD_IBPB) || > - guest_cpuid_has(vcpu, X86_FEATURE_SBPB)); > -} > - > static inline bool supports_cpuid_fault(struct kvm_vcpu *vcpu) > { > return vcpu->arch.msr_platform_info & MSR_PLATFORM_INFO_CPUID_FAULT; > @@ -298,4 +283,19 @@ static __always_inline bool guest_cpu_cap_has(struct kvm_vcpu *vcpu, > return vcpu->arch.cpu_caps[x86_leaf] & __feature_bit(x86_feature); > } > > +static inline bool guest_has_spec_ctrl_msr(struct kvm_vcpu *vcpu) > +{ > + return (guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL) || > + guest_cpuid_has(vcpu, X86_FEATURE_AMD_STIBP) || > + guest_cpuid_has(vcpu, X86_FEATURE_AMD_IBRS) || > + guest_cpuid_has(vcpu, X86_FEATURE_AMD_SSBD)); > +} > + > +static inline bool guest_has_pred_cmd_msr(struct kvm_vcpu *vcpu) > +{ > + return (guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL) || > + guest_cpuid_has(vcpu, X86_FEATURE_AMD_IBPB) || > + guest_cpuid_has(vcpu, X86_FEATURE_SBPB)); > +} > + > #endif Reviewed-by: Maxim Levitsky Best regards, Maxim Levitsky