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([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.googlemail.com with ESMTPSA id j17-20020a05640211d100b00419357a2647sm8143114edw.25.2022.04.06.05.49.16 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 06 Apr 2022 05:49:17 -0700 (PDT) Sender: Paolo Bonzini Message-ID: <24bf735f-1f63-277e-02f1-dff90d5cfbab@redhat.com> Date: Wed, 6 Apr 2022 14:49:16 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Subject: Re: [RFC PATCH v5 079/104] KVM: TDX: Implements vcpu request_immediate_exit Content-Language: en-US To: isaku.yamahata@intel.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: isaku.yamahata@gmail.com, Jim Mattson , erdemaktas@google.com, Connor Kuehl , Sean Christopherson References: <22f86f34055452b99a8d5bf2a707e40645e03334.1646422845.git.isaku.yamahata@intel.com> From: Paolo Bonzini In-Reply-To: <22f86f34055452b99a8d5bf2a707e40645e03334.1646422845.git.isaku.yamahata@intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3/4/22 20:49, isaku.yamahata@intel.com wrote: > From: Isaku Yamahata > > Now we are able to inject interrupts into TDX vcpu, it's ready to block TDX > vcpu. Wire up kvm x86 methods for blocking/unblocking vcpu for TDX. To > unblock on pending events, request immediate exit methods is also needed. > > Signed-off-by: Isaku Yamahata > --- > arch/x86/kvm/vmx/main.c | 10 +++++++++- > 1 file changed, 9 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/kvm/vmx/main.c b/arch/x86/kvm/vmx/main.c > index a0bcc4dca678..404a260796e4 100644 > --- a/arch/x86/kvm/vmx/main.c > +++ b/arch/x86/kvm/vmx/main.c > @@ -280,6 +280,14 @@ static void vt_enable_irq_window(struct kvm_vcpu *vcpu) > vmx_enable_irq_window(vcpu); > } > > +static void vt_request_immediate_exit(struct kvm_vcpu *vcpu) > +{ > + if (is_td_vcpu(vcpu)) > + return __kvm_request_immediate_exit(vcpu); > + > + vmx_request_immediate_exit(vcpu); > +} > + > static int vt_mem_enc_op(struct kvm *kvm, void __user *argp) > { > if (!is_td(kvm)) > @@ -402,7 +410,7 @@ struct kvm_x86_ops vt_x86_ops __initdata = { > .check_intercept = vmx_check_intercept, > .handle_exit_irqoff = vmx_handle_exit_irqoff, > > - .request_immediate_exit = vmx_request_immediate_exit, > + .request_immediate_exit = vt_request_immediate_exit, > > .sched_in = vt_sched_in, > Reviewed-by: Paolo Bonzini