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Wed, 24 Jun 2026 06:43:06 -0700 (PDT) X-Received: by 2002:a17:90a:e7d2:b0:362:e826:cefe with SMTP id 98e67ed59e1d1-37dd0e1f5c0mr9002038a91.23.1782308585293; Wed, 24 Jun 2026 06:43:05 -0700 (PDT) From: Utkarsh Singh To: qemu-devel@nongnu.org Cc: kbusch@kernel.org, its@irrelevant.dk, foss@defmacro.it, qemu-block@nongnu.org, mlombard@redhat.com, jmeneghi@redhat.com, peter.maydell@linaro.org, Utkarsh Singh Subject: [PATCH v2] hw/nvme: add user controlled 'vendor-id' and 'device-id' properties Date: Wed, 24 Jun 2026 19:12:55 +0530 Message-ID: <20260624134255.558888-1-utsingh@redhat.com> X-Mailer: git-send-email 2.54.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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=lists1p.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=utsingh@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -24 X-Spam_score: -2.5 X-Spam_bar: -- X-Spam_report: (-2.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.445, 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_PASS=-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: qemu development 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: 1782308670339158500 Content-Type: text/plain; charset="utf-8" Add user-configurable 'vendor-id' and 'device-id' parameters to allow overriding the default PCI IDs. This enables testing of vendor-specific and device-specific quirks in guest operating systems. Both parameters accept 16-bit hexadecimal values and default to Red Hat IDs (vendor: 0x1b36, device: 0x0010). They are mutually exclusive with the 'use-intel-id' flag to prevent conflicting configurations. Suggested-by: Maurizio Lombardi Suggested-by: John Meneghini Signed-off-by: Utkarsh Singh --- Changes in v2: - Renamed 'vid' parameter to 'vendor-id' for consistency with Qemu=20 naming convention - Added 'device-id' parameter to allow complete PCI ID override - Link to v1: https://lore.kernel.org/qemu-devel/20260623131946.46879-1-uts= ingh@redhat.com =20 docs/system/devices/nvme.rst | 16 +++++++++++++++- hw/nvme/ctrl.c | 16 ++++++++++++++-- hw/nvme/nvme.h | 2 ++ 3 files changed, 31 insertions(+), 3 deletions(-) diff --git a/docs/system/devices/nvme.rst b/docs/system/devices/nvme.rst index 98a4401043..79514afcc5 100644 --- a/docs/system/devices/nvme.rst +++ b/docs/system/devices/nvme.rst @@ -51,7 +51,8 @@ parameters. ``use-intel-id`` (default: ``off``) Since QEMU 5.2, the device uses a QEMU allocated "Red Hat" PCI Device and Vendor ID. Set this to ``on`` to revert to the unallocated Intel ID - previously used. + previously used. This parameter is mutually exclusive with ``vendor-id`` + and ``device-id``. =20 ``ocp`` (default: ``off``) The Open Compute Project defines the Datacenter NVMe SSD Specification t= hat @@ -65,6 +66,19 @@ parameters. to more closely impersonate a particular device type. The model name can be a maximum of 40 characters in length. =20 +``vendor-id`` (default: ``0x1b36`` for Red Hat) + Override the default PCI vendor ID. This can be used when needing to + more closely impersonate a particular device type or test vendor-specific + quirks. The vendor ID must be a 16-bit hexadecimal value. This parameter + is mutually exclusive with ``use-intel-id``. + +``device-id`` (default: ``0x0010`` for Red Hat NVMe) + Override the default PCI device ID. This can be used when needing to + more closely impersonate a particular device type or test device-specific + quirks. The device ID must be a 16-bit hexadecimal value. Since PCI IDs + are a (vendor, device) tuple, this should typically be used together with + ``vendor-id``. This parameter is mutually exclusive with ``use-intel-id`= `. + ``firmware-version`` (default: current QEMU version number) Override the default reported firmware version, which can be used when needing to more closely impersonate a particular device type. The version diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index 815f39173c..679f3b9930 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -8610,6 +8610,14 @@ static bool nvme_check_params(NvmeCtrl *n, Error **e= rrp) return false; } =20 + if (params->use_intel_id && + (params->vendor_id !=3D PCI_VENDOR_ID_REDHAT || + params->device_id !=3D PCI_DEVICE_ID_REDHAT_NVME)) { + error_setg(errp, + "use_intel_id and vendor-id/device-id are mutually excl= usive"); + return false; + } + if (params->model && strlen(params->model) > NVME_ID_CTRL_MN_MAX_LEN) { error_setg(errp, "'model' parameter '%s' can be at most '%d' chara= cters", @@ -8976,8 +8984,8 @@ static bool nvme_init_pci(NvmeCtrl *n, PCIDevice *pci= _dev, Error **errp) pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL); pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_NVME); } else { - pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_REDHAT); - pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_REDHAT_NVME); + pci_config_set_vendor_id(pci_conf, n->params.vendor_id); + pci_config_set_device_id(pci_conf, n->params.device_id); } =20 pci_config_set_class(pci_conf, PCI_CLASS_STORAGE_EXPRESS); @@ -9401,6 +9409,10 @@ static const Property nvme_props[] =3D { DEFINE_PROP_STRING("serial", NvmeCtrl, params.serial), DEFINE_PROP_STRING("model", NvmeCtrl, params.model), DEFINE_PROP_STRING("firmware-version", NvmeCtrl, params.firmware_versi= on), + DEFINE_PROP_UINT16("vendor-id", NvmeCtrl, params.vendor_id, + PCI_VENDOR_ID_REDHAT), + DEFINE_PROP_UINT16("device-id", NvmeCtrl, params.device_id, + PCI_DEVICE_ID_REDHAT_NVME), DEFINE_PROP_UINT32("cmb_size_mb", NvmeCtrl, params.cmb_size_mb, 0), DEFINE_PROP_UINT32("num_queues", NvmeCtrl, params.num_queues, 0), DEFINE_PROP_UINT32("max_ioqpairs", NvmeCtrl, params.max_ioqpairs, 64), diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h index 5ef3ebee29..eb8467a641 100644 --- a/hw/nvme/nvme.h +++ b/hw/nvme/nvme.h @@ -544,6 +544,8 @@ typedef struct NvmeParams { char *serial; char *model; char *firmware_version; + uint16_t vendor_id; + uint16_t device_id; uint32_t num_queues; /* deprecated since 5.1 */ uint32_t max_ioqpairs; uint16_t msix_qsize; --=20 2.54.0