diff options
| author |   Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com> | 2022-09-07 14:13:54 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2022-09-13 12:54:23 -0400 |
| commit | a4a3798f0077a1584491574027b0067c13396d12 (patch) | |
| tree | b2d4f3a9a0578db0c910b0dd94bbde8f738cce86 | |
| parent | drm/amdgpu: use dirty framebuffer helper (diff) | |
| download | wireguard-linux-a4a3798f0077a1584491574027b0067c13396d12.tar.xz wireguard-linux-a4a3798f0077a1584491574027b0067c13396d12.zip | |
drm/amdkfd: Fix CRIU restore op due to doorbell offset
Recently introduced change to allocate doorbells only when the first
queue is created or mapped for CPU / GPU access, did not consider
Checkpoint Restore scenario completely. This fix allows the CRIU restore
operation by extending the doorbell optimization to CRIU restore
scenario.
Fixes: 16f0013157bf ("drm/amdkfd: Allocate doorbells only when needed")
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 6 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 7 |
3 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index 84da1a9ce37c..56f7307c21d2 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -2153,6 +2153,12 @@ static int criu_restore_devices(struct kfd_process *p, ret = PTR_ERR(pdd); goto exit; } + + if (!pdd->doorbell_index && + kfd_alloc_process_doorbells(pdd->dev, &pdd->doorbell_index) < 0) { + ret = -ENOMEM; + goto exit; + } } /* diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c b/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c index b33798f89ef0..cd4e61bf0493 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c @@ -303,6 +303,9 @@ int kfd_alloc_process_doorbells(struct kfd_dev *kfd, unsigned int *doorbell_inde if (r > 0) *doorbell_index = r; + if (r < 0) + pr_err("Failed to allocate process doorbells\n"); + return r; } diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c index 6e3e7f54381b..5137476ec18e 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c @@ -857,6 +857,13 @@ int kfd_criu_restore_queue(struct kfd_process *p, ret = -EINVAL; goto exit; } + + if (!pdd->doorbell_index && + kfd_alloc_process_doorbells(pdd->dev, &pdd->doorbell_index) < 0) { + ret = -ENOMEM; + goto exit; + } + /* data stored in this order: mqd, ctl_stack */ mqd = q_extra_data; ctl_stack = mqd + q_data->mqd_size; |