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[54.240.197.224]) by smtp.gmail.com with ESMTPSA id l14-20020a05600c1d0e00b003da105437besm18116801wms.29.2023.01.16.09.46.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 16 Jan 2023 09:46:18 -0800 (PST) From: Paul Durrant X-Google-Original-From: Paul Durrant Message-ID: <2f50be65-e24e-d612-9fa0-53b7f20125de@xen.org> Date: Mon, 16 Jan 2023 17:46:15 +0000 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.6.1 Subject: Re: [PATCH v6 20/51] i386/xen: handle VCPUOP_register_vcpu_info Content-Language: en-US To: David Woodhouse , qemu-devel@nongnu.org Cc: Paolo Bonzini , Joao Martins , Ankur Arora , =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= , Thomas Huth , =?UTF-8?Q?Alex_Benn=c3=a9e?= , Juan Quintela , "Dr . David Alan Gilbert" , Claudio Fontana , Julien Grall References: <20230110122042.1562155-1-dwmw2@infradead.org> <20230110122042.1562155-21-dwmw2@infradead.org> Organization: Xen Project In-Reply-To: <20230110122042.1562155-21-dwmw2@infradead.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2a00:1450:4864:20::333; envelope-from=xadimgnik@gmail.com; helo=mail-wm1-x333.google.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, NICE_REPLY_A=-0.097, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: paul@xen.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 10/01/2023 12:20, David Woodhouse wrote: > From: Joao Martins > > Handle the hypercall to set a per vcpu info, and also wire up the default > vcpu_info in the shared_info page for the first 32 vCPUs. > > To avoid deadlock within KVM a vCPU thread must set its *own* vcpu_info > rather than it being set from the context in which the hypercall is > invoked. > > Add the vcpu_info (and default) GPA to the vmstate_x86_cpu for migration, > and restore it in kvm_arch_put_registers() appropriately. > > Signed-off-by: Joao Martins > Signed-off-by: David Woodhouse > --- > target/i386/cpu.h | 2 + > target/i386/kvm/kvm.c | 17 ++++ > target/i386/kvm/trace-events | 1 + > target/i386/kvm/xen-emu.c | 152 ++++++++++++++++++++++++++++++++++- > target/i386/kvm/xen-emu.h | 2 + > target/i386/machine.c | 19 +++++ > 6 files changed, 190 insertions(+), 3 deletions(-) > Reviewed-by: Paul Durrant