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bh=qTDP635O3rFuA54PetQfruYqv8ZMSnd1Lx/gmGu1pDA=; b=MffuVIcDrAMk6qTojnRbQd7JxW/gCeBvjHRfobuUNzRnTFa4uhoUjOclMm0BDHqpSZDZcj LUFQdwAMJu9RJLyTYNiz9OXCEXHSyCd8pM9iL0dVBkhgaU0XXW5YXJ9CTDuGpxE2YEwmh+ MdftxT7+FCugLIarYD80NmQVf+Z2O6I= X-MC-Unique: D3YyCsPsPXWCsgE6BrzbxQ-1 From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, jean-philippe@linaro.org, mst@redhat.com, peter.maydell@linaro.org, clg@redhat.com, zhenzhong.duan@intel.com, yanghliu@redhat.com Cc: alex.williamson@redhat.com, jasowang@redhat.com Subject: [PATCH v5 4/4] qemu-options.hx: Add an entry for virtio-iommu-pci and document aw-bits Date: Thu, 15 Feb 2024 09:42:14 +0100 Message-ID: <20240215084315.863897-5-eric.auger@redhat.com> In-Reply-To: <20240215084315.863897-1-eric.auger@redhat.com> References: <20240215084315.863897-1-eric.auger@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.1 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=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.531, 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_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: , 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: 1707986648506100001 We are missing an entry for the virtio-iommu-pci device. Add the information on which machine it is currently supported and document the new aw-bits option. Signed-off-by: Eric Auger Reviewed-by: C=C3=A9dric Le Goater --- v4 -> v5 - tweek the aw-bits option description according to C=C3=A9dric's suggestion --- qemu-options.hx | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/qemu-options.hx b/qemu-options.hx index 8547254dbf..a98bc7bd60 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -1172,6 +1172,14 @@ SRST Please also refer to the wiki page for general scenarios of VT-d emulation in QEMU: https://wiki.qemu.org/Features/VT-d. =20 +``-device virtio-iommu-pci[,option=3D...]`` + This is only supported by ``-machine q35`` and ``-machine virt``. + It supports below options: + + ``aw-bits=3Dval`` (val between 32 and 64, default depends on machine) + This decides the address width of IOVA address space. It defaults + to 39 bits on q35 machines and 48 bits on ARM virt machines. + ERST =20 DEF("name", HAS_ARG, QEMU_OPTION_name, --=20 2.41.0