From: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
To: Matthew Brost <matthew.brost@intel.com>, intel-xe@lists.freedesktop.org
Subject: Re: [Intel-xe] [PATCH 5/6] drm/xe: Allow num_binds == 0 in VM bind IOCTL
Date: Thu, 21 Sep 2023 11:32:17 +0200 [thread overview]
Message-ID: <55c806c5a41472fd063faae222ef74ece36945b4.camel@linux.intel.com> (raw)
In-Reply-To: <20230914204053.2220281-6-matthew.brost@intel.com>
Hi, Matt!
On Thu, 2023-09-14 at 13:40 -0700, Matthew Brost wrote:
> The idea being out-syncs can signal indicating all previous
> operations
> on the bind queue are complete. An example use case of this would be
> support for implementing vkQueueWaitForIdle easily.
>
> Signed-off-by: Matthew Brost <matthew.brost@intel.com>
One question below.
> ---
> drivers/gpu/drm/xe/xe_vm.c | 30 ++++++++++++++++++------------
> 1 file changed, 18 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
> index 49c745d53b41..0e2f3ab453ea 100644
> --- a/drivers/gpu/drm/xe/xe_vm.c
> +++ b/drivers/gpu/drm/xe/xe_vm.c
> @@ -2678,7 +2678,6 @@ static int vm_bind_ioctl_check_args(struct
> xe_device *xe,
> int i;
>
> if (XE_IOCTL_DBG(xe, args->extensions) ||
> - XE_IOCTL_DBG(xe, !args->num_binds) ||
> XE_IOCTL_DBG(xe, args->num_binds > MAX_BINDS))
> return -EINVAL;
>
> @@ -2805,7 +2804,7 @@ int xe_vm_bind_ioctl(struct drm_device *dev,
> void *data, struct drm_file *file)
> goto put_exec_queue;
> }
>
> - if (XE_IOCTL_DBG(xe, async !=
> + if (XE_IOCTL_DBG(xe, args->num_binds && async !=
> !!(q->flags &
> EXEC_QUEUE_FLAG_VM_ASYNC))) {
> err = -EINVAL;
> goto put_exec_queue;
> @@ -2819,7 +2818,7 @@ int xe_vm_bind_ioctl(struct drm_device *dev,
> void *data, struct drm_file *file)
> }
>
> if (!args->exec_queue_id) {
> - if (XE_IOCTL_DBG(xe, async !=
> + if (XE_IOCTL_DBG(xe, args->num_binds && async !=
> !!(vm->flags &
> XE_VM_FLAG_ASYNC_DEFAULT))) {
> err = -EINVAL;
> goto put_vm;
> @@ -2856,16 +2855,18 @@ int xe_vm_bind_ioctl(struct drm_device *dev,
> void *data, struct drm_file *file)
> }
> }
>
> - bos = kzalloc(sizeof(*bos) * args->num_binds, GFP_KERNEL);
> - if (!bos) {
> - err = -ENOMEM;
> - goto release_vm_lock;
> - }
> + if (args->num_binds) {
> + bos = kzalloc(sizeof(*bos) * args->num_binds,
> GFP_KERNEL);
> + if (!bos) {
> + err = -ENOMEM;
> + goto release_vm_lock;
> + }
>
> - ops = kzalloc(sizeof(*ops) * args->num_binds, GFP_KERNEL);
> - if (!ops) {
> - err = -ENOMEM;
> - goto release_vm_lock;
> + ops = kzalloc(sizeof(*ops) * args->num_binds,
> GFP_KERNEL);
> + if (!ops) {
> + err = -ENOMEM;
> + goto release_vm_lock;
> + }
> }
>
> for (i = 0; i < args->num_binds; ++i) {
> @@ -2920,6 +2921,11 @@ int xe_vm_bind_ioctl(struct drm_device *dev,
> void *data, struct drm_file *file)
> goto free_syncs;
> }
>
> + if (!args->num_binds) {
> + err = -ENODATA;
> + goto free_syncs;
> + }
> +
Hmm. Here it appears we reject num_binds == 0?
> for (i = 0; i < args->num_binds; ++i) {
> u64 range = bind_ops[i].range;
> u64 addr = bind_ops[i].addr;
next prev parent reply other threads:[~2023-09-21 9:32 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-14 20:40 [Intel-xe] [PATCH 0/6] uAPI changes to align with async binds Matthew Brost
2023-09-14 20:40 ` [Intel-xe] [PATCH 1/6] drm/xe/uapi: Kill XE_VM_PROPERTY_BIND_OP_ERROR_CAPTURE_ADDRESS extension Matthew Brost
2023-09-21 8:55 ` Thomas Hellström
2023-09-14 20:40 ` [Intel-xe] [PATCH 2/6] drm/xe/uapi: Kill DRM_XE_UFENCE_WAIT_VM_ERROR Matthew Brost
2023-09-21 8:57 ` Thomas Hellström
2023-09-14 20:40 ` [Intel-xe] [PATCH 3/6] drm/xe: Remove async worker and rework sync binds Matthew Brost
2023-09-21 9:09 ` Thomas Hellström
2023-09-14 20:40 ` [Intel-xe] [PATCH 4/6] drm/xe: Fix VM bind out-sync signaling ordering Matthew Brost
2023-09-21 9:15 ` Thomas Hellström
2023-09-14 20:40 ` [Intel-xe] [PATCH 5/6] drm/xe: Allow num_binds == 0 in VM bind IOCTL Matthew Brost
2023-09-21 9:32 ` Thomas Hellström [this message]
2023-09-21 18:27 ` Matthew Brost
2023-09-14 20:40 ` [Intel-xe] [PATCH 6/6] drm/xe: Allow num_batch_buffer == 0 in exec IOCTL Matthew Brost
2023-09-21 9:42 ` Thomas Hellström
2023-09-21 18:33 ` Matthew Brost
2023-09-14 22:22 ` [Intel-xe] ✓ CI.Patch_applied: success for uAPI changes to align with async binds Patchwork
2023-09-14 22:22 ` [Intel-xe] ✗ CI.checkpatch: warning " Patchwork
2023-09-14 22:23 ` [Intel-xe] ✓ CI.KUnit: success " Patchwork
2023-09-14 22:30 ` [Intel-xe] ✓ CI.Build: " Patchwork
2023-09-14 22:31 ` [Intel-xe] ✓ CI.Hooks: " Patchwork
2023-09-14 22:32 ` [Intel-xe] ✓ CI.checksparse: " Patchwork
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