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 v12 07/24] vfio: Block device access via device fd until device is opened Date: Fri, 2 Jun 2023 05:16:36 -0700 [thread overview] Message-ID: <20230602121653.80017-8-yi.l.liu@intel.com> (raw) In-Reply-To: <20230602121653.80017-1-yi.l.liu@intel.com> Allow the vfio_device file to be in a state where the device FD is opened but the device cannot be used by userspace (i.e. its .open_device() hasn't been called). This inbetween state is not used when the device FD is spawned from the group FD, however when we create the device FD directly by opening a cdev it will be opened in the blocked state. The reason for the inbetween state is that userspace only gets a FD but doesn't gain access permission until binding the FD to an iommufd. So in the blocked state, only the bind operation is allowed. Completing bind will allow user to further access the device. This is implemented by adding a flag in struct vfio_device_file to mark the blocked state and using a simple smp_load_acquire() to obtain the flag value and serialize all the device setup with the thread accessing this device. Following this lockless scheme, it can safely handle the device FD unbound->bound but it cannot handle bound->unbound. To allow this we'd need to add a lock on all the vfio ioctls which seems costly. So once device FD is bound, it remains bound until the FD is closed. Suggested-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Eric Auger <eric.auger@redhat.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> --- drivers/vfio/group.c | 11 ++++++++++- drivers/vfio/vfio.h | 1 + drivers/vfio/vfio_main.c | 16 ++++++++++++++++ 3 files changed, 27 insertions(+), 1 deletion(-) diff --git a/drivers/vfio/group.c b/drivers/vfio/group.c index caf53716ddb2..088dd34c8931 100644 --- a/drivers/vfio/group.c +++ b/drivers/vfio/group.c @@ -194,9 +194,18 @@ static int vfio_df_group_open(struct vfio_device_file *df) df->iommufd = device->group->iommufd; ret = vfio_df_open(df); - if (ret) + if (ret) { df->iommufd = NULL; + goto out_put_kvm; + } + + /* + * Paired with smp_load_acquire() in vfio_device_fops::ioctl/ + * read/write/mmap and vfio_file_has_device_access() + */ + smp_store_release(&df->access_granted, true); +out_put_kvm: if (device->open_count == 0) vfio_device_put_kvm(device); diff --git a/drivers/vfio/vfio.h b/drivers/vfio/vfio.h index f9eb52eb9ed7..fdf2fc73f880 100644 --- a/drivers/vfio/vfio.h +++ b/drivers/vfio/vfio.h @@ -18,6 +18,7 @@ struct vfio_container; struct vfio_device_file { struct vfio_device *device; + bool access_granted; spinlock_t kvm_ref_lock; /* protect kvm field */ struct kvm *kvm; struct iommufd_ctx *iommufd; /* protected by struct vfio_device_set::lock */ diff --git a/drivers/vfio/vfio_main.c b/drivers/vfio/vfio_main.c index a3c5817fc545..4c8b7713dc3d 100644 --- a/drivers/vfio/vfio_main.c +++ b/drivers/vfio/vfio_main.c @@ -1129,6 +1129,10 @@ static long vfio_device_fops_unl_ioctl(struct file *filep, struct vfio_device *device = df->device; int ret; + /* Paired with smp_store_release() following vfio_df_open() */ + if (!smp_load_acquire(&df->access_granted)) + return -EINVAL; + ret = vfio_device_pm_runtime_get(device); if (ret) return ret; @@ -1156,6 +1160,10 @@ static ssize_t vfio_device_fops_read(struct file *filep, char __user *buf, struct vfio_device_file *df = filep->private_data; struct vfio_device *device = df->device; + /* Paired with smp_store_release() following vfio_df_open() */ + if (!smp_load_acquire(&df->access_granted)) + return -EINVAL; + if (unlikely(!device->ops->read)) return -EINVAL; @@ -1169,6 +1177,10 @@ static ssize_t vfio_device_fops_write(struct file *filep, struct vfio_device_file *df = filep->private_data; struct vfio_device *device = df->device; + /* Paired with smp_store_release() following vfio_df_open() */ + if (!smp_load_acquire(&df->access_granted)) + return -EINVAL; + if (unlikely(!device->ops->write)) return -EINVAL; @@ -1180,6 +1192,10 @@ static int vfio_device_fops_mmap(struct file *filep, struct vm_area_struct *vma) struct vfio_device_file *df = filep->private_data; struct vfio_device *device = df->device; + /* Paired with smp_store_release() following vfio_df_open() */ + if (!smp_load_acquire(&df->access_granted)) + return -EINVAL; + if (unlikely(!device->ops->mmap)) return -EINVAL; -- 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 v12 07/24] vfio: Block device access via device fd until device is opened Date: Fri, 2 Jun 2023 05:16:36 -0700 [thread overview] Message-ID: <20230602121653.80017-8-yi.l.liu@intel.com> (raw) In-Reply-To: <20230602121653.80017-1-yi.l.liu@intel.com> Allow the vfio_device file to be in a state where the device FD is opened but the device cannot be used by userspace (i.e. its .open_device() hasn't been called). This inbetween state is not used when the device FD is spawned from the group FD, however when we create the device FD directly by opening a cdev it will be opened in the blocked state. The reason for the inbetween state is that userspace only gets a FD but doesn't gain access permission until binding the FD to an iommufd. So in the blocked state, only the bind operation is allowed. Completing bind will allow user to further access the device. This is implemented by adding a flag in struct vfio_device_file to mark the blocked state and using a simple smp_load_acquire() to obtain the flag value and serialize all the device setup with the thread accessing this device. Following this lockless scheme, it can safely handle the device FD unbound->bound but it cannot handle bound->unbound. To allow this we'd need to add a lock on all the vfio ioctls which seems costly. So once device FD is bound, it remains bound until the FD is closed. Suggested-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Eric Auger <eric.auger@redhat.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> --- drivers/vfio/group.c | 11 ++++++++++- drivers/vfio/vfio.h | 1 + drivers/vfio/vfio_main.c | 16 ++++++++++++++++ 3 files changed, 27 insertions(+), 1 deletion(-) diff --git a/drivers/vfio/group.c b/drivers/vfio/group.c index caf53716ddb2..088dd34c8931 100644 --- a/drivers/vfio/group.c +++ b/drivers/vfio/group.c @@ -194,9 +194,18 @@ static int vfio_df_group_open(struct vfio_device_file *df) df->iommufd = device->group->iommufd; ret = vfio_df_open(df); - if (ret) + if (ret) { df->iommufd = NULL; + goto out_put_kvm; + } + + /* + * Paired with smp_load_acquire() in vfio_device_fops::ioctl/ + * read/write/mmap and vfio_file_has_device_access() + */ + smp_store_release(&df->access_granted, true); +out_put_kvm: if (device->open_count == 0) vfio_device_put_kvm(device); diff --git a/drivers/vfio/vfio.h b/drivers/vfio/vfio.h index f9eb52eb9ed7..fdf2fc73f880 100644 --- a/drivers/vfio/vfio.h +++ b/drivers/vfio/vfio.h @@ -18,6 +18,7 @@ struct vfio_container; struct vfio_device_file { struct vfio_device *device; + bool access_granted; spinlock_t kvm_ref_lock; /* protect kvm field */ struct kvm *kvm; struct iommufd_ctx *iommufd; /* protected by struct vfio_device_set::lock */ diff --git a/drivers/vfio/vfio_main.c b/drivers/vfio/vfio_main.c index a3c5817fc545..4c8b7713dc3d 100644 --- a/drivers/vfio/vfio_main.c +++ b/drivers/vfio/vfio_main.c @@ -1129,6 +1129,10 @@ static long vfio_device_fops_unl_ioctl(struct file *filep, struct vfio_device *device = df->device; int ret; + /* Paired with smp_store_release() following vfio_df_open() */ + if (!smp_load_acquire(&df->access_granted)) + return -EINVAL; + ret = vfio_device_pm_runtime_get(device); if (ret) return ret; @@ -1156,6 +1160,10 @@ static ssize_t vfio_device_fops_read(struct file *filep, char __user *buf, struct vfio_device_file *df = filep->private_data; struct vfio_device *device = df->device; + /* Paired with smp_store_release() following vfio_df_open() */ + if (!smp_load_acquire(&df->access_granted)) + return -EINVAL; + if (unlikely(!device->ops->read)) return -EINVAL; @@ -1169,6 +1177,10 @@ static ssize_t vfio_device_fops_write(struct file *filep, struct vfio_device_file *df = filep->private_data; struct vfio_device *device = df->device; + /* Paired with smp_store_release() following vfio_df_open() */ + if (!smp_load_acquire(&df->access_granted)) + return -EINVAL; + if (unlikely(!device->ops->write)) return -EINVAL; @@ -1180,6 +1192,10 @@ static int vfio_device_fops_mmap(struct file *filep, struct vm_area_struct *vma) struct vfio_device_file *df = filep->private_data; struct vfio_device *device = df->device; + /* Paired with smp_store_release() following vfio_df_open() */ + if (!smp_load_acquire(&df->access_granted)) + return -EINVAL; + if (unlikely(!device->ops->mmap)) return -EINVAL; -- 2.34.1
next prev parent reply other threads:[~2023-06-02 12:17 UTC|newest] Thread overview: 180+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-06-02 12:16 [PATCH v12 00/24] Add vfio_device cdev for iommufd support Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-02 12:16 ` [PATCH v12 01/24] vfio: Allocate per device file structure Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-02 12:16 ` [PATCH v12 02/24] vfio: Refine vfio file kAPIs for KVM Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-02 12:16 ` [PATCH v12 03/24] vfio: Accept vfio device file in the KVM facing kAPI Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-02 12:16 ` [PATCH v12 04/24] kvm/vfio: Prepare for accepting vfio device fd Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-02 12:16 ` [PATCH v12 05/24] kvm/vfio: Accept vfio device file from userspace Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-02 12:16 ` [PATCH v12 06/24] vfio: Pass struct vfio_device_file * to vfio_device_open/close() Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-12 21:52 ` Alex Williamson 2023-06-12 21:52 ` Alex Williamson 2023-06-13 5:24 ` Liu, Yi L 2023-06-13 5:24 ` [Intel-gfx] " Liu, Yi L 2023-06-02 12:16 ` Yi Liu [this message] 2023-06-02 12:16 ` [Intel-gfx] [PATCH v12 07/24] vfio: Block device access via device fd until device is opened Yi Liu 2023-06-12 21:52 ` Alex Williamson 2023-06-12 21:52 ` [Intel-gfx] " Alex Williamson 2023-06-13 5:46 ` Liu, Yi L 2023-06-13 5:46 ` [Intel-gfx] " Liu, Yi L 2023-06-13 14:16 ` Alex Williamson 2023-06-13 14:16 ` Alex Williamson 2023-06-13 14:36 ` Liu, Yi L 2023-06-13 14:36 ` [Intel-gfx] " Liu, Yi L 2023-06-13 14:42 ` Alex Williamson 2023-06-13 14:42 ` Alex Williamson 2023-06-13 14:44 ` Liu, Yi L 2023-06-13 14:44 ` [Intel-gfx] " Liu, Yi L 2023-06-13 17:19 ` Jason Gunthorpe 2023-06-13 17:19 ` [Intel-gfx] " Jason Gunthorpe 2023-06-13 17:31 ` Alex Williamson 2023-06-13 17:31 ` Alex Williamson 2023-06-02 12:16 ` [PATCH v12 08/24] vfio: Add cdev_device_open_cnt to vfio_group Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-02 12:16 ` [PATCH v12 09/24] vfio: Make vfio_df_open() single open for device cdev path Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-02 12:16 ` [PATCH v12 10/24] vfio-iommufd: Move noiommu compat validation out of vfio_iommufd_bind() Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-22 17:59 ` Jason Gunthorpe 2023-06-22 17:59 ` [Intel-gfx] " Jason Gunthorpe 2023-06-02 12:16 ` [PATCH v12 11/24] vfio-iommufd: Split bind/attach into two steps Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-22 17:59 ` Jason Gunthorpe 2023-06-22 17:59 ` [Intel-gfx] " Jason Gunthorpe 2023-06-02 12:16 ` [PATCH v12 12/24] vfio: Record devid in vfio_device_file Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-22 18:00 ` Jason Gunthorpe 2023-06-22 18:00 ` Jason Gunthorpe 2023-06-02 12:16 ` [PATCH v12 13/24] vfio-iommufd: Add detach_ioas support for physical VFIO devices Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-23 14:04 ` Jason Gunthorpe 2023-06-23 14:04 ` [Intel-gfx] " Jason Gunthorpe 2023-06-02 12:16 ` [PATCH v12 14/24] iommufd/device: Add iommufd_access_detach() API Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-23 14:15 ` Jason Gunthorpe 2023-06-23 14:15 ` [Intel-gfx] " Jason Gunthorpe 2023-06-25 18:26 ` Nicolin Chen 2023-06-25 18:26 ` [Intel-gfx] " Nicolin Chen 2023-06-02 12:16 ` [PATCH v12 15/24] vfio-iommufd: Add detach_ioas support for emulated VFIO devices Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-23 14:16 ` Jason Gunthorpe 2023-06-23 14:16 ` [Intel-gfx] " Jason Gunthorpe 2023-06-02 12:16 ` [PATCH v12 16/24] vfio: Move vfio_device_group_unregister() to be the first operation in unregister Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-23 14:22 ` Jason Gunthorpe 2023-06-23 14:22 ` [Intel-gfx] " Jason Gunthorpe 2023-06-02 12:16 ` [PATCH v12 17/24] vfio: Add cdev for vfio_device Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-23 15:58 ` Jason Gunthorpe 2023-06-23 15:58 ` [Intel-gfx] " Jason Gunthorpe 2023-06-02 12:16 ` [PATCH v12 18/24] vfio: Add VFIO_DEVICE_BIND_IOMMUFD Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-12 22:27 ` Alex Williamson 2023-06-12 22:27 ` Alex Williamson 2023-06-13 5:48 ` Liu, Yi L 2023-06-13 5:48 ` [Intel-gfx] " Liu, Yi L 2023-06-13 14:18 ` Alex Williamson 2023-06-13 14:18 ` Alex Williamson 2023-06-13 14:28 ` Liu, Yi L 2023-06-13 14:28 ` [Intel-gfx] " Liu, Yi L 2023-06-13 14:39 ` Alex Williamson 2023-06-13 14:39 ` Alex Williamson 2023-06-13 14:42 ` [Intel-gfx] " Liu, Yi L 2023-06-13 14:42 ` Liu, Yi L 2023-06-13 14:59 ` Alex Williamson 2023-06-13 14:59 ` [Intel-gfx] " Alex Williamson 2023-06-23 16:15 ` Jason Gunthorpe 2023-06-23 16:15 ` [Intel-gfx] " Jason Gunthorpe 2023-06-26 8:34 ` Liu, Yi L 2023-06-26 8:34 ` [Intel-gfx] " Liu, Yi L 2023-06-26 12:56 ` Jason Gunthorpe 2023-06-26 12:56 ` [Intel-gfx] " Jason Gunthorpe 2023-06-26 13:35 ` Liu, Yi L 2023-06-26 13:35 ` [Intel-gfx] " Liu, Yi L 2023-06-26 14:51 ` Liu, Yi L 2023-06-26 14:51 ` [Intel-gfx] " Liu, Yi L 2023-06-28 14:34 ` Jason Gunthorpe 2023-06-28 14:34 ` [Intel-gfx] " Jason Gunthorpe 2023-06-28 14:41 ` Liu, Yi L 2023-06-28 14:41 ` [Intel-gfx] " Liu, Yi L 2023-06-02 12:16 ` [PATCH v12 19/24] vfio: Add VFIO_DEVICE_[AT|DE]TACH_IOMMUFD_PT Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-23 16:21 ` Jason Gunthorpe 2023-06-23 16:21 ` [Intel-gfx] " Jason Gunthorpe 2023-06-02 12:16 ` [PATCH v12 20/24] vfio: Only check group->type for noiommu test Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-12 22:37 ` Alex Williamson 2023-06-12 22:37 ` [Intel-gfx] " Alex Williamson 2023-06-13 9:20 ` Liu, Yi L 2023-06-13 9:20 ` [Intel-gfx] " Liu, Yi L 2023-06-02 12:16 ` [PATCH v12 21/24] vfio: Determine noiommu device in __vfio_register_dev() Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-12 22:42 ` Alex Williamson 2023-06-12 22:42 ` Alex Williamson 2023-06-13 5:53 ` Liu, Yi L 2023-06-13 5:53 ` [Intel-gfx] " Liu, Yi L 2023-06-13 14:19 ` Alex Williamson 2023-06-13 14:19 ` Alex Williamson 2023-06-13 14:33 ` Liu, Yi L 2023-06-13 14:33 ` [Intel-gfx] " Liu, Yi L 2023-06-13 14:48 ` Alex Williamson 2023-06-13 14:48 ` Alex Williamson 2023-06-13 15:01 ` Liu, Yi L 2023-06-13 15:01 ` [Intel-gfx] " Liu, Yi L 2023-06-13 15:13 ` Alex Williamson 2023-06-13 17:15 ` Alex Williamson 2023-06-13 17:35 ` Jason Gunthorpe 2023-06-13 17:35 ` [Intel-gfx] " Jason Gunthorpe 2023-06-13 20:10 ` Alex Williamson 2023-06-13 20:10 ` Alex Williamson 2023-06-14 3:24 ` Liu, Yi L 2023-06-14 3:24 ` [Intel-gfx] " Liu, Yi L 2023-06-14 5:42 ` Tian, Kevin 2023-06-14 5:42 ` [Intel-gfx] " Tian, Kevin 2023-06-14 6:14 ` Liu, Yi L 2023-06-14 6:14 ` [Intel-gfx] " Liu, Yi L 2023-06-14 6:20 ` Tian, Kevin 2023-06-14 6:20 ` [Intel-gfx] " Tian, Kevin 2023-06-14 12:23 ` Jason Gunthorpe 2023-06-14 12:23 ` Jason Gunthorpe 2023-06-14 13:12 ` [Intel-gfx] " Liu, Yi L 2023-06-14 13:12 ` Liu, Yi L 2023-06-14 17:30 ` Jason Gunthorpe 2023-06-14 17:30 ` [Intel-gfx] " Jason Gunthorpe 2023-06-02 12:16 ` [PATCH v12 22/24] vfio: Remove vfio_device_is_noiommu() Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-12 22:46 ` Alex Williamson 2023-06-12 22:46 ` Alex Williamson 2023-06-02 12:16 ` [PATCH v12 23/24] vfio: Compile vfio_group infrastructure optionally Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-23 16:35 ` Jason Gunthorpe 2023-06-23 16:35 ` [Intel-gfx] " Jason Gunthorpe 2023-06-02 12:16 ` [PATCH v12 24/24] docs: vfio: Add vfio device cdev description Yi Liu 2023-06-02 12:16 ` [Intel-gfx] " Yi Liu 2023-06-12 23:06 ` Alex Williamson 2023-06-12 23:06 ` Alex Williamson 2023-06-13 12:01 ` Liu, Yi L 2023-06-13 12:01 ` [Intel-gfx] " Liu, Yi L 2023-06-13 14:24 ` Alex Williamson 2023-06-13 14:24 ` Alex Williamson 2023-06-13 14:48 ` Liu, Yi L 2023-06-13 14:48 ` [Intel-gfx] " Liu, Yi L 2023-06-13 15:04 ` Alex Williamson 2023-06-13 15:04 ` Alex Williamson 2023-06-13 15:11 ` Liu, Yi L 2023-06-13 15:11 ` [Intel-gfx] " Liu, Yi L 2023-06-13 17:30 ` Alex Williamson 2023-06-13 17:30 ` Alex Williamson 2023-06-02 16:19 ` [Intel-gfx] ✗ Fi.CI.BUILD: failure for Add vfio_device cdev for iommufd support (rev15) Patchwork 2023-06-07 8:27 ` [PATCH v12 00/24] Add vfio_device cdev for iommufd support Nicolin Chen 2023-06-07 8:27 ` [Intel-gfx] " Nicolin Chen 2023-06-08 6:58 ` Jiang, Yanting 2023-06-08 6:58 ` [Intel-gfx] " Jiang, Yanting 2023-06-09 16:47 ` Matthew Rosato 2023-06-09 16:47 ` [Intel-gfx] " Matthew Rosato 2023-06-14 15:47 ` [Intel-gfx] ✗ Fi.CI.BUILD: failure for Add vfio_device cdev for iommufd support (rev16) Patchwork
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