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Wed, 08 Feb 2023 14:14:14 -0800 (PST) X-Received: by 2002:a5d:6791:0:b0:2bf:963a:f266 with SMTP id v17-20020a5d6791000000b002bf963af266mr8388883wru.27.1675894454169; Wed, 08 Feb 2023 14:14:14 -0800 (PST) Received: from redhat.com ([46.136.252.173]) by smtp.gmail.com with ESMTPSA id d17-20020adff851000000b002c3dd82a0e9sm11708385wrq.91.2023.02.08.14.14.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 Feb 2023 14:14:13 -0800 (PST) From: Juan Quintela To: Gavin Shan Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org, pbonzini@redhat.com, peter.maydell@linaro.org, peterx@redhat.com, david@redhat.com, philmd@linaro.org, mst@redhat.com, cohuck@redhat.com, dgilbert@redhat.com, maz@kernel.org, zhenyzha@redhat.com, shan.gavin@gmail.com Subject: Re: [PATCH RFCv1 7/8] hw/arm/virt: Enable backup bitmap for dirty ring In-Reply-To: <20230206112010.99871-8-gshan@redhat.com> (Gavin Shan's message of "Mon, 6 Feb 2023 19:20:09 +0800") References: <20230206112010.99871-1-gshan@redhat.com> <20230206112010.99871-8-gshan@redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) Date: Wed, 08 Feb 2023 23:14:11 +0100 Message-ID: <877cwr9558.fsf@secure.mitica> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain Received-SPF: pass client-ip=170.10.133.124; envelope-from=quintela@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-arm@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: quintela@redhat.com Errors-To: qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org Sender: qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org X-TUID: c3s4PwO5M/l0 Gavin Shan wrote: > When KVM device "kvm-arm-gicv3" or "arm-its-kvm" is used, we have to > enable the backup bitmap for the dirty ring. Otherwise, the migration > will fail because those two devices are using the backup bitmap to track > dirty guest memory, corresponding to various hardware tables. > > Signed-off-by: Gavin Shan Reviewed-by: Juan Quintela