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([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.gmail.com with ESMTPSA id yh11sm296692ejb.16.2021.06.23.13.02.11 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 23 Jun 2021 13:02:12 -0700 (PDT) Subject: Re: [PATCH 25/54] KVM: x86/mmu: Add helpers to query mmu_role bits To: Sean Christopherson Cc: Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Yu Zhang , Maxim Levitsky References: <20210622175739.3610207-1-seanjc@google.com> <20210622175739.3610207-26-seanjc@google.com> From: Paolo Bonzini Message-ID: <1babfd1c-bee1-12e5-a9d9-9507891efdfd@redhat.com> Date: Wed, 23 Jun 2021 22:02:11 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: <20210622175739.3610207-26-seanjc@google.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 22/06/21 19:57, Sean Christopherson wrote: > +static inline bool is_##reg##_##name(struct kvm_mmu *mmu) \ What do you think about calling these is_mmu_##name? The point of having these helpers is that the register doesn't count, and they return the effective value (e.g. false in most EPT cases). Paolo > +{ \ > + return !!(mmu->mmu_role. base_or_ext . reg##_##name); \ > +} > +BUILD_MMU_ROLE_ACCESSOR(ext, cr0, pg); > +BUILD_MMU_ROLE_ACCESSOR(base, cr0, wp); > +BUILD_MMU_ROLE_ACCESSOR(ext, cr4, pse); > +BUILD_MMU_ROLE_ACCESSOR(ext, cr4, pae); > +BUILD_MMU_ROLE_ACCESSOR(ext, cr4, smep); > +BUILD_MMU_ROLE_ACCESSOR(ext, cr4, smap); > +BUILD_MMU_ROLE_ACCESSOR(ext, cr4, pke); > +BUILD_MMU_ROLE_ACCESSOR(ext, cr4, la57); > +BUILD_MMU_ROLE_ACCESSOR(base, efer, nx); > + > struct kvm_mmu_role_regs vcpu_to_role_regs(struct kvm_vcpu *vcpu)