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Tue, 21 Jul 2020 06:20:04 +0000 (UTC) Subject: Re: [RFC v2 1/1] memory: Delete assertion in memory_region_unregister_iommu_notifier To: Peter Xu References: <20200708141657.GA199122@xz-x1> <14b1ca26-448d-0feb-7529-6546809aaa59@redhat.com> <20200709141037.GF199122@xz-x1> <20200710133005.GL199122@xz-x1> <05bb512c-ca0a-e80e-1eed-446e918ad729@redhat.com> <20200716010005.GA535743@xz-x1> <20200717141806.GE535743@xz-x1> <20200720130346.GM535743@xz-x1> From: Jason Wang Message-ID: <31f7ee27-e649-b547-9cf8-35a88a1aa491@redhat.com> Date: Tue, 21 Jul 2020 14:20:01 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200720130346.GM535743@xz-x1> Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=205.139.110.61; envelope-from=jasowang@redhat.com; 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Tsirkin" , qemu-devel@nongnu.org, =?UTF-8?Q?Eugenio_P=c3=a9rez?= , Eric Auger , Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 2020/7/20 下午9:03, Peter Xu wrote: > On Mon, Jul 20, 2020 at 12:02:06PM +0800, Jason Wang wrote: >> Right, so there's no need to deal with unmap in vtd's replay implementation >> (as what generic one did). > We don't even for now; see vtd_page_walk_info.notify_unmap. Thanks, Right, but I meant the vtd_address_space_unmap() in vtd_iomm_replay(). It looks to me it will trigger UNMAP notifiers. Thanks