From: Yi Liu <yi.l.liu@intel.com> To: alex.williamson@redhat.com, jgg@nvidia.com, kevin.tian@intel.com Cc: joro@8bytes.org, robin.murphy@arm.com, cohuck@redhat.com, eric.auger@redhat.com, nicolinc@nvidia.com, kvm@vger.kernel.org, mjrosato@linux.ibm.com, chao.p.peng@linux.intel.com, yi.l.liu@intel.com, yi.y.sun@linux.intel.com, peterx@redhat.com, jasowang@redhat.com, shameerali.kolothum.thodi@huawei.com, lulu@redhat.com, suravee.suthikulpanit@amd.com, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-s390@vger.kernel.org, xudong.hao@intel.com, yan.y.zhao@intel.com, terrence.xu@intel.com, yanting.jiang@intel.com, zhenzhong.duan@intel.com, clegoate@redhat.com Subject: [PATCH v14 05/26] kvm/vfio: Accept vfio device file from userspace Date: Mon, 10 Jul 2023 19:59:07 -0700 [thread overview] Message-ID: <20230711025928.6438-6-yi.l.liu@intel.com> (raw) In-Reply-To: <20230711025928.6438-1-yi.l.liu@intel.com> This defines KVM_DEV_VFIO_FILE* and make alias with KVM_DEV_VFIO_GROUP*. Old userspace uses KVM_DEV_VFIO_GROUP* works as well. Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Tested-by: Terrence Xu <terrence.xu@intel.com> Tested-by: Nicolin Chen <nicolinc@nvidia.com> Tested-by: Matthew Rosato <mjrosato@linux.ibm.com> Tested-by: Yanting Jiang <yanting.jiang@intel.com> Tested-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> Signed-off-by: Yi Liu <yi.l.liu@intel.com> --- Documentation/virt/kvm/devices/vfio.rst | 47 ++++++++++++++++--------- include/uapi/linux/kvm.h | 13 +++++-- virt/kvm/vfio.c | 12 +++---- 3 files changed, 47 insertions(+), 25 deletions(-) diff --git a/Documentation/virt/kvm/devices/vfio.rst b/Documentation/virt/kvm/devices/vfio.rst index 08b544212638..c549143bb891 100644 --- a/Documentation/virt/kvm/devices/vfio.rst +++ b/Documentation/virt/kvm/devices/vfio.rst @@ -9,22 +9,34 @@ Device types supported: - KVM_DEV_TYPE_VFIO Only one VFIO instance may be created per VM. The created device -tracks VFIO groups in use by the VM and features of those groups -important to the correctness and acceleration of the VM. As groups -are enabled and disabled for use by the VM, KVM should be updated -about their presence. When registered with KVM, a reference to the -VFIO-group is held by KVM. +tracks VFIO files (group or device) in use by the VM and features +of those groups/devices important to the correctness and acceleration +of the VM. As groups/devices are enabled and disabled for use by the +VM, KVM should be updated about their presence. When registered with +KVM, a reference to the VFIO file is held by KVM. Groups: - KVM_DEV_VFIO_GROUP - -KVM_DEV_VFIO_GROUP attributes: - KVM_DEV_VFIO_GROUP_ADD: Add a VFIO group to VFIO-KVM device tracking - kvm_device_attr.addr points to an int32_t file descriptor - for the VFIO group. - KVM_DEV_VFIO_GROUP_DEL: Remove a VFIO group from VFIO-KVM device tracking - kvm_device_attr.addr points to an int32_t file descriptor - for the VFIO group. + KVM_DEV_VFIO_FILE + alias: KVM_DEV_VFIO_GROUP + +KVM_DEV_VFIO_FILE attributes: + KVM_DEV_VFIO_FILE_ADD: Add a VFIO file (group/device) to VFIO-KVM device + tracking + + kvm_device_attr.addr points to an int32_t file descriptor for the + VFIO file. + + KVM_DEV_VFIO_FILE_DEL: Remove a VFIO file (group/device) from VFIO-KVM + device tracking + + kvm_device_attr.addr points to an int32_t file descriptor for the + VFIO file. + +KVM_DEV_VFIO_GROUP (legacy kvm device group restricted to the handling of VFIO group fd): + KVM_DEV_VFIO_GROUP_ADD: same as KVM_DEV_VFIO_FILE_ADD for group fd only + + KVM_DEV_VFIO_GROUP_DEL: same as KVM_DEV_VFIO_FILE_DEL for group fd only + KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE: attaches a guest visible TCE table allocated by sPAPR KVM. kvm_device_attr.addr points to a struct:: @@ -40,7 +52,10 @@ KVM_DEV_VFIO_GROUP attributes: - @tablefd is a file descriptor for a TCE table allocated via KVM_CREATE_SPAPR_TCE. -The GROUP_ADD operation above should be invoked prior to accessing the +The FILE/GROUP_ADD operation above should be invoked prior to accessing the device file descriptor via VFIO_GROUP_GET_DEVICE_FD in order to support drivers which require a kvm pointer to be set in their .open_device() -callback. +callback. It is the same for device file descriptor via character device +open which gets device access via VFIO_DEVICE_BIND_IOMMUFD. For such file +descriptors, FILE_ADD should be invoked before VFIO_DEVICE_BIND_IOMMUFD +to support the drivers mentioned in prior sentence as well. diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index f089ab290978..13065dd96132 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -1418,9 +1418,16 @@ struct kvm_device_attr { __u64 addr; /* userspace address of attr data */ }; -#define KVM_DEV_VFIO_GROUP 1 -#define KVM_DEV_VFIO_GROUP_ADD 1 -#define KVM_DEV_VFIO_GROUP_DEL 2 +#define KVM_DEV_VFIO_FILE 1 + +#define KVM_DEV_VFIO_FILE_ADD 1 +#define KVM_DEV_VFIO_FILE_DEL 2 + +/* KVM_DEV_VFIO_GROUP aliases are for compile time uapi compatibility */ +#define KVM_DEV_VFIO_GROUP KVM_DEV_VFIO_FILE + +#define KVM_DEV_VFIO_GROUP_ADD KVM_DEV_VFIO_FILE_ADD +#define KVM_DEV_VFIO_GROUP_DEL KVM_DEV_VFIO_FILE_DEL #define KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE 3 enum kvm_device_type { diff --git a/virt/kvm/vfio.c b/virt/kvm/vfio.c index 8f7fa07e8170..07cb5f44b2a2 100644 --- a/virt/kvm/vfio.c +++ b/virt/kvm/vfio.c @@ -286,12 +286,12 @@ static int kvm_vfio_set_file(struct kvm_device *dev, long attr, int32_t fd; switch (attr) { - case KVM_DEV_VFIO_GROUP_ADD: + case KVM_DEV_VFIO_FILE_ADD: if (get_user(fd, argp)) return -EFAULT; return kvm_vfio_file_add(dev, fd); - case KVM_DEV_VFIO_GROUP_DEL: + case KVM_DEV_VFIO_FILE_DEL: if (get_user(fd, argp)) return -EFAULT; return kvm_vfio_file_del(dev, fd); @@ -309,7 +309,7 @@ static int kvm_vfio_set_attr(struct kvm_device *dev, struct kvm_device_attr *attr) { switch (attr->group) { - case KVM_DEV_VFIO_GROUP: + case KVM_DEV_VFIO_FILE: return kvm_vfio_set_file(dev, attr->attr, u64_to_user_ptr(attr->addr)); } @@ -321,10 +321,10 @@ static int kvm_vfio_has_attr(struct kvm_device *dev, struct kvm_device_attr *attr) { switch (attr->group) { - case KVM_DEV_VFIO_GROUP: + case KVM_DEV_VFIO_FILE: switch (attr->attr) { - case KVM_DEV_VFIO_GROUP_ADD: - case KVM_DEV_VFIO_GROUP_DEL: + case KVM_DEV_VFIO_FILE_ADD: + case KVM_DEV_VFIO_FILE_DEL: #ifdef CONFIG_SPAPR_TCE_IOMMU case KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE: #endif -- 2.34.1
WARNING: multiple messages have this Message-ID (diff)
From: Yi Liu <yi.l.liu@intel.com> To: alex.williamson@redhat.com, jgg@nvidia.com, kevin.tian@intel.com Cc: mjrosato@linux.ibm.com, jasowang@redhat.com, xudong.hao@intel.com, zhenzhong.duan@intel.com, peterx@redhat.com, terrence.xu@intel.com, chao.p.peng@linux.intel.com, linux-s390@vger.kernel.org, yi.l.liu@intel.com, kvm@vger.kernel.org, lulu@redhat.com, yanting.jiang@intel.com, joro@8bytes.org, nicolinc@nvidia.com, yan.y.zhao@intel.com, intel-gfx@lists.freedesktop.org, eric.auger@redhat.com, intel-gvt-dev@lists.freedesktop.org, yi.y.sun@linux.intel.com, clegoate@redhat.com, cohuck@redhat.com, shameerali.kolothum.thodi@huawei.com, suravee.suthikulpanit@amd.com, robin.murphy@arm.com Subject: [Intel-gfx] [PATCH v14 05/26] kvm/vfio: Accept vfio device file from userspace Date: Mon, 10 Jul 2023 19:59:07 -0700 [thread overview] Message-ID: <20230711025928.6438-6-yi.l.liu@intel.com> (raw) In-Reply-To: <20230711025928.6438-1-yi.l.liu@intel.com> This defines KVM_DEV_VFIO_FILE* and make alias with KVM_DEV_VFIO_GROUP*. Old userspace uses KVM_DEV_VFIO_GROUP* works as well. Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Tested-by: Terrence Xu <terrence.xu@intel.com> Tested-by: Nicolin Chen <nicolinc@nvidia.com> Tested-by: Matthew Rosato <mjrosato@linux.ibm.com> Tested-by: Yanting Jiang <yanting.jiang@intel.com> Tested-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> Signed-off-by: Yi Liu <yi.l.liu@intel.com> --- Documentation/virt/kvm/devices/vfio.rst | 47 ++++++++++++++++--------- include/uapi/linux/kvm.h | 13 +++++-- virt/kvm/vfio.c | 12 +++---- 3 files changed, 47 insertions(+), 25 deletions(-) diff --git a/Documentation/virt/kvm/devices/vfio.rst b/Documentation/virt/kvm/devices/vfio.rst index 08b544212638..c549143bb891 100644 --- a/Documentation/virt/kvm/devices/vfio.rst +++ b/Documentation/virt/kvm/devices/vfio.rst @@ -9,22 +9,34 @@ Device types supported: - KVM_DEV_TYPE_VFIO Only one VFIO instance may be created per VM. The created device -tracks VFIO groups in use by the VM and features of those groups -important to the correctness and acceleration of the VM. As groups -are enabled and disabled for use by the VM, KVM should be updated -about their presence. When registered with KVM, a reference to the -VFIO-group is held by KVM. +tracks VFIO files (group or device) in use by the VM and features +of those groups/devices important to the correctness and acceleration +of the VM. As groups/devices are enabled and disabled for use by the +VM, KVM should be updated about their presence. When registered with +KVM, a reference to the VFIO file is held by KVM. Groups: - KVM_DEV_VFIO_GROUP - -KVM_DEV_VFIO_GROUP attributes: - KVM_DEV_VFIO_GROUP_ADD: Add a VFIO group to VFIO-KVM device tracking - kvm_device_attr.addr points to an int32_t file descriptor - for the VFIO group. - KVM_DEV_VFIO_GROUP_DEL: Remove a VFIO group from VFIO-KVM device tracking - kvm_device_attr.addr points to an int32_t file descriptor - for the VFIO group. + KVM_DEV_VFIO_FILE + alias: KVM_DEV_VFIO_GROUP + +KVM_DEV_VFIO_FILE attributes: + KVM_DEV_VFIO_FILE_ADD: Add a VFIO file (group/device) to VFIO-KVM device + tracking + + kvm_device_attr.addr points to an int32_t file descriptor for the + VFIO file. + + KVM_DEV_VFIO_FILE_DEL: Remove a VFIO file (group/device) from VFIO-KVM + device tracking + + kvm_device_attr.addr points to an int32_t file descriptor for the + VFIO file. + +KVM_DEV_VFIO_GROUP (legacy kvm device group restricted to the handling of VFIO group fd): + KVM_DEV_VFIO_GROUP_ADD: same as KVM_DEV_VFIO_FILE_ADD for group fd only + + KVM_DEV_VFIO_GROUP_DEL: same as KVM_DEV_VFIO_FILE_DEL for group fd only + KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE: attaches a guest visible TCE table allocated by sPAPR KVM. kvm_device_attr.addr points to a struct:: @@ -40,7 +52,10 @@ KVM_DEV_VFIO_GROUP attributes: - @tablefd is a file descriptor for a TCE table allocated via KVM_CREATE_SPAPR_TCE. -The GROUP_ADD operation above should be invoked prior to accessing the +The FILE/GROUP_ADD operation above should be invoked prior to accessing the device file descriptor via VFIO_GROUP_GET_DEVICE_FD in order to support drivers which require a kvm pointer to be set in their .open_device() -callback. +callback. It is the same for device file descriptor via character device +open which gets device access via VFIO_DEVICE_BIND_IOMMUFD. For such file +descriptors, FILE_ADD should be invoked before VFIO_DEVICE_BIND_IOMMUFD +to support the drivers mentioned in prior sentence as well. diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index f089ab290978..13065dd96132 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -1418,9 +1418,16 @@ struct kvm_device_attr { __u64 addr; /* userspace address of attr data */ }; -#define KVM_DEV_VFIO_GROUP 1 -#define KVM_DEV_VFIO_GROUP_ADD 1 -#define KVM_DEV_VFIO_GROUP_DEL 2 +#define KVM_DEV_VFIO_FILE 1 + +#define KVM_DEV_VFIO_FILE_ADD 1 +#define KVM_DEV_VFIO_FILE_DEL 2 + +/* KVM_DEV_VFIO_GROUP aliases are for compile time uapi compatibility */ +#define KVM_DEV_VFIO_GROUP KVM_DEV_VFIO_FILE + +#define KVM_DEV_VFIO_GROUP_ADD KVM_DEV_VFIO_FILE_ADD +#define KVM_DEV_VFIO_GROUP_DEL KVM_DEV_VFIO_FILE_DEL #define KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE 3 enum kvm_device_type { diff --git a/virt/kvm/vfio.c b/virt/kvm/vfio.c index 8f7fa07e8170..07cb5f44b2a2 100644 --- a/virt/kvm/vfio.c +++ b/virt/kvm/vfio.c @@ -286,12 +286,12 @@ static int kvm_vfio_set_file(struct kvm_device *dev, long attr, int32_t fd; switch (attr) { - case KVM_DEV_VFIO_GROUP_ADD: + case KVM_DEV_VFIO_FILE_ADD: if (get_user(fd, argp)) return -EFAULT; return kvm_vfio_file_add(dev, fd); - case KVM_DEV_VFIO_GROUP_DEL: + case KVM_DEV_VFIO_FILE_DEL: if (get_user(fd, argp)) return -EFAULT; return kvm_vfio_file_del(dev, fd); @@ -309,7 +309,7 @@ static int kvm_vfio_set_attr(struct kvm_device *dev, struct kvm_device_attr *attr) { switch (attr->group) { - case KVM_DEV_VFIO_GROUP: + case KVM_DEV_VFIO_FILE: return kvm_vfio_set_file(dev, attr->attr, u64_to_user_ptr(attr->addr)); } @@ -321,10 +321,10 @@ static int kvm_vfio_has_attr(struct kvm_device *dev, struct kvm_device_attr *attr) { switch (attr->group) { - case KVM_DEV_VFIO_GROUP: + case KVM_DEV_VFIO_FILE: switch (attr->attr) { - case KVM_DEV_VFIO_GROUP_ADD: - case KVM_DEV_VFIO_GROUP_DEL: + case KVM_DEV_VFIO_FILE_ADD: + case KVM_DEV_VFIO_FILE_DEL: #ifdef CONFIG_SPAPR_TCE_IOMMU case KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE: #endif -- 2.34.1
next prev parent reply other threads:[~2023-07-11 2:59 UTC|newest] Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-07-11 2:59 [PATCH v14 00/26] Add vfio_device cdev for iommufd support Yi Liu 2023-07-11 2:59 ` [Intel-gfx] " Yi Liu 2023-07-11 2:59 ` [PATCH v14 01/26] vfio: Allocate per device file structure Yi Liu 2023-07-11 2:59 ` [Intel-gfx] " Yi Liu 2023-07-11 2:59 ` [PATCH v14 02/26] vfio: Refine vfio file kAPIs for KVM Yi Liu 2023-07-11 2:59 ` [Intel-gfx] " Yi Liu 2023-07-11 2:59 ` [PATCH v14 03/26] vfio: Accept vfio device file in the KVM facing kAPI Yi Liu 2023-07-11 2:59 ` [Intel-gfx] " Yi Liu 2023-07-11 2:59 ` [PATCH v14 04/26] kvm/vfio: Prepare for accepting vfio device fd Yi Liu 2023-07-11 2:59 ` [Intel-gfx] " Yi Liu 2023-07-11 2:59 ` Yi Liu [this message] 2023-07-11 2:59 ` [Intel-gfx] [PATCH v14 05/26] kvm/vfio: Accept vfio device file from userspace Yi Liu 2023-07-11 2:59 ` [PATCH v14 06/26] vfio: Pass struct vfio_device_file * to vfio_device_open/close() Yi Liu 2023-07-11 2:59 ` [Intel-gfx] " Yi Liu 2023-07-11 2:59 ` [PATCH v14 07/26] vfio: Block device access via device fd until device is opened Yi Liu 2023-07-11 2:59 ` [Intel-gfx] " Yi Liu 2023-07-11 2:59 ` [PATCH v14 08/26] vfio: Add cdev_device_open_cnt to vfio_group Yi Liu 2023-07-11 2:59 ` [Intel-gfx] " Yi Liu 2023-07-11 2:59 ` [PATCH v14 09/26] vfio: Make vfio_df_open() single open for device cdev path Yi Liu 2023-07-11 2:59 ` [Intel-gfx] " Yi Liu 2023-07-11 2:59 ` [PATCH v14 10/26] vfio-iommufd: Move noiommu compat validation out of vfio_iommufd_bind() Yi Liu 2023-07-11 2:59 ` [Intel-gfx] " Yi Liu 2023-07-11 2:59 ` [PATCH v14 11/26] vfio-iommufd: Split bind/attach into two steps Yi Liu 2023-07-11 2:59 ` [Intel-gfx] " Yi Liu 2023-07-11 2:59 ` [PATCH v14 12/26] vfio: Record devid in vfio_device_file Yi Liu 2023-07-11 2:59 ` [Intel-gfx] " Yi Liu 2023-07-11 2:59 ` [PATCH v14 13/26] vfio-iommufd: Add detach_ioas support for physical VFIO devices Yi Liu 2023-07-11 2:59 ` [Intel-gfx] " Yi Liu 2023-07-11 2:59 ` [Intel-gfx] [PATCH v14 14/26] iommufd/device: Add iommufd_access_detach() API Yi Liu 2023-07-11 2:59 ` Yi Liu 2023-07-14 13:54 ` Jason Gunthorpe 2023-07-14 13:54 ` [Intel-gfx] " Jason Gunthorpe 2023-07-11 2:59 ` [Intel-gfx] [PATCH v14 15/26] vfio-iommufd: Add detach_ioas support for emulated VFIO devices Yi Liu 2023-07-11 2:59 ` Yi Liu 2023-07-11 2:59 ` [Intel-gfx] [PATCH v14 16/26] vfio: Move vfio_device_group_unregister() to be the first operation in unregister Yi Liu 2023-07-11 2:59 ` Yi Liu 2023-07-11 2:59 ` [Intel-gfx] [PATCH v14 17/26] vfio: Move device_del() before waiting for the last vfio_device registration refcount Yi Liu 2023-07-11 2:59 ` Yi Liu 2023-07-14 13:56 ` Jason Gunthorpe 2023-07-14 13:56 ` [Intel-gfx] " Jason Gunthorpe 2023-07-11 2:59 ` [Intel-gfx] [PATCH v14 18/26] vfio: Add cdev for vfio_device Yi Liu 2023-07-11 2:59 ` Yi Liu 2023-07-11 2:59 ` [Intel-gfx] [PATCH v14 19/26] vfio: Test kvm pointer in _vfio_device_get_kvm_safe() Yi Liu 2023-07-11 2:59 ` Yi Liu 2023-07-14 14:11 ` Jason Gunthorpe 2023-07-14 14:11 ` [Intel-gfx] " Jason Gunthorpe 2023-07-11 2:59 ` [Intel-gfx] [PATCH v14 20/26] iommufd: Add iommufd_ctx_from_fd() Yi Liu 2023-07-11 2:59 ` Yi Liu 2023-07-14 14:20 ` [Intel-gfx] " Jason Gunthorpe 2023-07-14 14:20 ` Jason Gunthorpe 2023-07-15 4:10 ` Liu, Yi L 2023-07-15 4:10 ` [Intel-gfx] " Liu, Yi L 2023-07-11 2:59 ` [Intel-gfx] [PATCH v14 21/26] vfio: Avoid repeated user pointer cast in vfio_device_fops_unl_ioctl() Yi Liu 2023-07-11 2:59 ` Yi Liu 2023-07-14 14:27 ` Jason Gunthorpe 2023-07-14 14:27 ` [Intel-gfx] " Jason Gunthorpe 2023-07-11 2:59 ` [Intel-gfx] [PATCH v14 22/26] vfio: Add VFIO_DEVICE_BIND_IOMMUFD Yi Liu 2023-07-11 2:59 ` Yi Liu 2023-07-14 14:42 ` Jason Gunthorpe 2023-07-14 14:42 ` [Intel-gfx] " Jason Gunthorpe 2023-07-15 4:16 ` Liu, Yi L 2023-07-15 4:16 ` [Intel-gfx] " Liu, Yi L 2023-07-15 13:04 ` Jason Gunthorpe 2023-07-15 13:04 ` [Intel-gfx] " Jason Gunthorpe 2023-07-15 14:19 ` Liu, Yi L 2023-07-15 14:19 ` [Intel-gfx] " Liu, Yi L 2023-07-11 2:59 ` [Intel-gfx] [PATCH v14 23/26] vfio: Add VFIO_DEVICE_[AT|DE]TACH_IOMMUFD_PT Yi Liu 2023-07-11 2:59 ` Yi Liu 2023-07-14 14:50 ` Jason Gunthorpe 2023-07-14 14:50 ` [Intel-gfx] " Jason Gunthorpe 2023-07-11 2:59 ` [Intel-gfx] [PATCH v14 24/26] vfio: Move the IOMMU_CAP_CACHE_COHERENCY check in __vfio_register_dev() Yi Liu 2023-07-11 2:59 ` Yi Liu 2023-07-14 15:14 ` Jason Gunthorpe 2023-07-14 15:14 ` [Intel-gfx] " Jason Gunthorpe 2023-07-11 2:59 ` [Intel-gfx] [PATCH v14 25/26] vfio: Compile vfio_group infrastructure optionally Yi Liu 2023-07-11 2:59 ` Yi Liu 2023-07-11 2:59 ` [Intel-gfx] [PATCH v14 26/26] docs: vfio: Add vfio device cdev description Yi Liu 2023-07-11 2:59 ` Yi Liu 2023-07-14 15:19 ` Jason Gunthorpe 2023-07-14 15:19 ` [Intel-gfx] " Jason Gunthorpe 2023-07-11 3:47 ` [Intel-gfx] ✗ Fi.CI.BUILD: failure for Add vfio_device cdev for iommufd support (rev18) Patchwork 2023-07-25 5:37 ` [PATCH v14 00/26] Add vfio_device cdev for iommufd support Jiang, Yanting 2023-07-25 5:37 ` [Intel-gfx] " Jiang, Yanting
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