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bh=AV1dHV/DKMAbDep2jVZbQdk/CCup6inKTxE45seX6JQ=; b=ZBGclPXnqZPZewW0+0PvCEgIuwKLeFsbcLynMlIzRDwV/5GSaY6yprhLc3+QEiSZ3xMul7 TZwSJKcE4R9BIPwnvNSlKa1RLHZPIwxgn/2ApCH4n1lY1mp6SshCB09lKm/whZsiGYBT6b /1uO1SaCTrXREKxkrkkfgL4+uj59mCY= X-MC-Unique: M3c4unt1NFyNVhKtRVjbGw-1 From: Gavin Shan To: qemu-arm@nongnu.org Cc: 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, quintela@redhat.com, dgilbert@redhat.com, maz@kernel.org, zhenyzha@redhat.com, shan.gavin@gmail.com Subject: [PATCH RFCv1 5/8] kvm: Synchronize secondary bitmap in last stage Date: Mon, 6 Feb 2023 19:20:07 +0800 Message-Id: <20230206112010.99871-6-gshan@redhat.com> In-Reply-To: <20230206112010.99871-1-gshan@redhat.com> References: <20230206112010.99871-1-gshan@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=gshan@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-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1675682635354100003 Content-Type: text/plain; charset="utf-8" In the last stage of live migration or memory slot removal, the backup bitmap needs to be synchronized. Signed-off-by: Gavin Shan --- accel/kvm/kvm-all.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 1a93985574..9ec117c441 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -1377,10 +1377,12 @@ static void kvm_set_phys_mem(KVMMemoryListener *kml, */ if (kvm_state->kvm_dirty_ring_size) { kvm_dirty_ring_reap_locked(kvm_state, NULL); + kvm_slot_get_dirty_log(kvm_state, mem, false); } else { kvm_slot_get_dirty_log(kvm_state, mem, true); } kvm_slot_sync_dirty_pages(mem, true); + kvm_slot_sync_dirty_pages(mem, false); } =20 /* unregister the slot */ @@ -1604,6 +1606,11 @@ static void kvm_log_sync_global(MemoryListener *l, b= ool last_stage) * However kvm dirty ring has no such side effect. */ kvm_slot_reset_dirty_pages(mem); + + if (s->kvm_dirty_ring_with_bitmap && last_stage && + kvm_slot_get_dirty_log(s, mem, false)) { + kvm_slot_sync_dirty_pages(mem, false); + } } } kvm_slots_unlock(); --=20 2.23.0