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bh=QIDmTnaAUiishdIiFaeP/BW6AbE5AkNMCdkImrTN2v0=; b=Cj+BMt0dAxXSnqABLMLvCLK0WDtOPr3VViRm8F4wKb8IsTlcudYiakAt2DvX2SNy58YKjo 9qI8LB4KTaSlDdsCikOzhyoPSYN+QksZrvsJfnzgQ1ibOfXrbHR93xld0qqytT/L0KkSIu MnzlJejbz9jNYoseGMKkSvoKNVYeqII= X-MC-Unique: UNU4iw8WN_albE_ioc9_5g-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 v4 4/4] qemu-options.hx: Add an entry for virtio-iommu-pci and document aw-bits Date: Tue, 13 Feb 2024 19:28:31 +0100 Message-ID: <20240213182933.825268-5-eric.auger@redhat.com> In-Reply-To: <20240213182933.825268-1-eric.auger@redhat.com> References: <20240213182933.825268-1-eric.auger@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 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=170.10.129.124; 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=-0.504, 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, T_SCC_BODY_TEXT_LINE=-0.01 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: 1707849082543100001 Content-Type: text/plain; charset="utf-8" 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 --- qemu-options.hx | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/qemu-options.hx b/qemu-options.hx index 8547254dbf..6a8c970640 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. With + q35 it defaults to 39 bits. On arm virt it defaults to 48 bits. + ERST =20 DEF("name", HAS_ARG, QEMU_OPTION_name, --=20 2.41.0