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([2a01:e0a:59e:9d80:527b:9dff:feef:3874]) by smtp.gmail.com with ESMTPSA id v21sm7636676wra.92.2021.09.06.02.22.32 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 06 Sep 2021 02:22:33 -0700 (PDT) Subject: Re: [PATCH 4/4] vl: Prioritize realizations of devices To: Jason Wang , Peter Xu References: <20210818194217.110451-1-peterx@redhat.com> <20210818194318.110993-1-peterx@redhat.com> <20210823184912.mazqfn7gurntj7ld@habkost.net> <20210823175457-mutt-send-email-mst@kernel.org> From: Eric Auger Message-ID: <49aca8d2-ddcd-2b16-a29f-41c54302c38d@redhat.com> Date: Mon, 6 Sep 2021 11:22:32 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eric.auger@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US Received-SPF: pass client-ip=216.205.24.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -69 X-Spam_score: -7.0 X-Spam_bar: ------- X-Spam_report: (-7.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.391, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-3.832, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: eric.auger@redhat.com Cc: =?UTF-8?Q?Daniel_P_=2e_Berrang=c3=a9?= , Eduardo Habkost , "Michael S. Tsirkin" , David Hildenbrand , qemu-devel , Markus Armbruster , Alex Williamson , Paolo Bonzini , "Dr . David Alan Gilbert" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi, On 8/25/21 6:23 AM, Jason Wang wrote: > On Tue, Aug 24, 2021 at 11:50 PM Peter Xu wrote: >> On Tue, Aug 24, 2021 at 10:52:24AM +0800, Jason Wang wrote: >>> It looks to me this doesn't solve the issue of using virtio-mmio with vhost? >> No IOMMU supported for any of the MMIO devices, right? Or am I wrong? Thanks, > I guess virtio IOMMU has that support, but I might be wrong. No that's not supported yet in QEMU. There is an inflight contribution attempting to support vSMMUv3 protection for sysbus devices though: [PATCH v6 0/4] hw/arm/smmuv3: Support non PCI/PCIe devices Thanks Eric > > Thanks > >> -- >> Peter Xu >>