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[81.2.115.145]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-435e10edf62sm16762185f8f.13.2026.01.29.08.09.20 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Jan 2026 08:09:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1769702962; x=1770307762; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=T0N0B5cWcZZOhJc+vK4KHyIYqbyF+U6ChwUVIRwX2tA=; b=aTPB5D10lIdQ/H9E8ir4KQO26Y4c+K27ieq65BWmaBnsWHoebxUYz+VXEayXoLjO0q JARhnHNtFZtWlP6MjoXOILDOnw2VWshxoybxZCHU6lU4ohKN7mdobZ1NxZ8V5/7NbWjn JwwLQMvgr4v3d9KV92BJgkKSFvOKZGPebIFzqnJOjDORJsybHdC6t0u77mO+H9zLStPv QQQVxogHkvZJIlq4HvqminxM4xuzEay/T19HrrhxZ7tfZ1SrxuKsZJ17SFHoTXVBHimD DcdGSQMrpVRT6YyBWdNWN7EA0aVBIvMNIIixIJcerS8UC29WxMlO/kKn3xLCIsDWB8aT B+vQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769702962; x=1770307762; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=T0N0B5cWcZZOhJc+vK4KHyIYqbyF+U6ChwUVIRwX2tA=; b=r8SdvwixmY8U8t99dWLGrAIwL8XYrMdbJVCcv7vFP7MK4qMg/gW7UzM1QmBCjmWBwZ E1+5iTmXMRcEPR68iAILU8h+1x/7/5eYK4hF5U5kL7zAo/OQ5JPFBLjmGxx1Kgrld85M Vc+PdmhzgI7PIVKXRqJn7enGkvW9+APJRcoSwq8RJDpnSy+DfecQZAAsC5V5sz4ALHOm nf67k7IfT0eIE8H/0Eevipo9xC51gp7HyTnS50RC85kwhlJCpCLQ8FowTfcfeve11FmZ cpLH2RSxUIU3obVnsr/8LAVmxEtNh1qgjNauRK1x36wqSEmUT6eHPON8qEFAIyD11Cq+ FtoQ== X-Gm-Message-State: AOJu0Yy6IrRoWVFwS/y4bxh/23iUWx5hNaZuUoEWGAuD67jz0zsr8PRo amk5pj2plGYGPQVH5ByoaMSr070SgSvPlaIfmJ5nNtSwqoSbHjm7Wtv9FYmVCo3k1DgRAnlXnXi NRKPwCoc= X-Gm-Gg: AZuq6aKGf8bGvZxzuy62Q5gNecpDa1g+71nrUczMJK8rJe6nyp3JW7vOSxUg4NehtaJ frZ18QIbWwv2cM+1GpCfkMfkhta7TP1FKjp/U05FHn4JlQcRNBOnpSGfw71n6f3A942PXM1JcPa gGzHOZ+vontOaUTdfE/phxgSVv80gwzWxI8E9vk+FAQOj5ozV5OzYyt7GGM8gooWPDkntjIov+q WvaSuEGqGqRjNFIKm0cXpIMBAFnjbJ564Vs0B/v/1yptWLNUw5ebOhUmV2/N9XbT2dHBer5TQCw 4KaPpdjygYaZN7ihXnBam5eQBGBPiaA53PKdztRUtzaK3UOpLjzch0TDrVJQLHDINYJ+s+yIbVa xM/YdUXDjNQqR0TYbjkAHJaw+t5LiBviqxVmCqMHw+AC215NKRHpGt2cHOFRfFpRxPaM2mefmTA 35wQTuHbp6Vqik6/M3KcX+Q3R3ovJAFVSvUJIZuJop X-Received: by 2002:a05:6000:1a8d:b0:431:1ae:a3be with SMTP id ffacd0b85a97d-435f3a6f7fbmr156796f8f.3.1769702962318; Thu, 29 Jan 2026 08:09:22 -0800 (PST) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 02/43] backends/iommufd: Introduce iommufd_backend_alloc_vdev Date: Thu, 29 Jan 2026 16:08:36 +0000 Message-ID: <20260129160917.1415092-3-peter.maydell@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260129160917.1415092-1-peter.maydell@linaro.org> References: <20260129160917.1415092-1-peter.maydell@linaro.org> 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=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::32c; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x32c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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: 2.1.29 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 @linaro.org) X-ZM-MESSAGEID: 1769702998582158500 Content-Type: text/plain; charset="utf-8" From: Nicolin Chen Add a helper to allocate an iommufd device's virtual device (in the user space) per a viommu instance. While at it, introduce a struct IOMMUFDVdev for later use by vendor IOMMU implementations. Signed-off-by: Nicolin Chen Reviewed-by: Eric Auger Signed-off-by: Shameer Kolothum Reviewed-by: Jonathan Cameron Tested-by: Zhangfei Gao Tested-by: Eric Auger Signed-off-by: Shameer Kolothum Reviewed-by: Yi Liu Message-id: 20260126104342.253965-3-skolothumtho@nvidia.com Signed-off-by: Peter Maydell --- backends/iommufd.c | 27 +++++++++++++++++++++++++++ backends/trace-events | 1 + include/system/iommufd.h | 12 ++++++++++++ 3 files changed, 40 insertions(+) diff --git a/backends/iommufd.c b/backends/iommufd.c index c65dc41d71..e3a3c1480e 100644 --- a/backends/iommufd.c +++ b/backends/iommufd.c @@ -473,6 +473,33 @@ bool iommufd_backend_alloc_viommu(IOMMUFDBackend *be, = uint32_t dev_id, return true; } =20 +bool iommufd_backend_alloc_vdev(IOMMUFDBackend *be, uint32_t dev_id, + uint32_t viommu_id, uint64_t virt_id, + uint32_t *out_vdev_id, Error **errp) +{ + int ret; + struct iommu_vdevice_alloc alloc_vdev =3D { + .size =3D sizeof(alloc_vdev), + .viommu_id =3D viommu_id, + .dev_id =3D dev_id, + .virt_id =3D virt_id, + }; + + ret =3D ioctl(be->fd, IOMMU_VDEVICE_ALLOC, &alloc_vdev); + + trace_iommufd_backend_alloc_vdev(be->fd, dev_id, viommu_id, virt_id, + alloc_vdev.out_vdevice_id, ret); + + if (ret) { + error_setg_errno(errp, errno, "IOMMU_VDEVICE_ALLOC failed"); + return false; + } + + g_assert(out_vdev_id); + *out_vdev_id =3D alloc_vdev.out_vdevice_id; + return true; +} + bool host_iommu_device_iommufd_attach_hwpt(HostIOMMUDeviceIOMMUFD *idev, uint32_t hwpt_id, Error **errp) { diff --git a/backends/trace-events b/backends/trace-events index 1ae94c4290..14a7ecf5aa 100644 --- a/backends/trace-events +++ b/backends/trace-events @@ -22,3 +22,4 @@ iommufd_backend_set_dirty(int iommufd, uint32_t hwpt_id, = bool start, int ret) " iommufd_backend_get_dirty_bitmap(int iommufd, uint32_t hwpt_id, uint64_t i= ova, uint64_t size, uint64_t flags, uint64_t page_size, int ret) " iommufd= =3D%d hwpt=3D%u iova=3D0x%"PRIx64" size=3D0x%"PRIx64" flags=3D0x%"PRIx64" p= age_size=3D0x%"PRIx64" (%d)" iommufd_backend_invalidate_cache(int iommufd, uint32_t id, uint32_t data_t= ype, uint32_t entry_len, uint32_t entry_num, uint32_t done_num, uint64_t da= ta_ptr, int ret) " iommufd=3D%d id=3D%u data_type=3D%u entry_len=3D%u entry= _num=3D%u done_num=3D%u data_ptr=3D0x%"PRIx64" (%d)" iommufd_backend_alloc_viommu(int iommufd, uint32_t dev_id, uint32_t type, = uint32_t hwpt_id, uint32_t viommu_id, int ret) " iommufd=3D%d type=3D%u dev= _id=3D%u hwpt_id=3D%u viommu_id=3D%u (%d)" +iommufd_backend_alloc_vdev(int iommufd, uint32_t dev_id, uint32_t viommu_i= d, uint64_t virt_id, uint32_t vdev_id, int ret) " iommufd=3D%d dev_id=3D%u = viommu_id=3D%u virt_id=3D0x%"PRIx64" vdev_id=3D%u (%d)" diff --git a/include/system/iommufd.h b/include/system/iommufd.h index bc4acd1e8b..567dfb7b1d 100644 --- a/include/system/iommufd.h +++ b/include/system/iommufd.h @@ -48,6 +48,14 @@ typedef struct IOMMUFDViommu { uint32_t viommu_id; /* virtual IOMMU ID of allocated object */ } IOMMUFDViommu; =20 +/* + * Virtual device object for a physical device bind to a vIOMMU. + */ +typedef struct IOMMUFDVdev { + uint32_t vdevice_id; /* object handle for vDevice */ + uint32_t virt_id; /* virtual device ID */ +} IOMMUFDVdev; + bool iommufd_backend_connect(IOMMUFDBackend *be, Error **errp); void iommufd_backend_disconnect(IOMMUFDBackend *be); =20 @@ -73,6 +81,10 @@ bool iommufd_backend_alloc_viommu(IOMMUFDBackend *be, ui= nt32_t dev_id, uint32_t viommu_type, uint32_t hwpt_id, uint32_t *out_hwpt, Error **errp); =20 +bool iommufd_backend_alloc_vdev(IOMMUFDBackend *be, uint32_t dev_id, + uint32_t viommu_id, uint64_t virt_id, + uint32_t *out_vdev_id, Error **errp); + bool iommufd_backend_set_dirty_tracking(IOMMUFDBackend *be, uint32_t hwpt_= id, bool start, Error **errp); bool iommufd_backend_get_dirty_bitmap(IOMMUFDBackend *be, uint32_t hwpt_id, --=20 2.43.0