diff options
| -rw-r--r-- | drivers/gpu/drm/xe/xe_device.c | 15 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_vm.c | 5 |
2 files changed, 17 insertions, 3 deletions
diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c index 8be765adf702..d60379d844d2 100644 --- a/drivers/gpu/drm/xe/xe_device.c +++ b/drivers/gpu/drm/xe/xe_device.c @@ -230,7 +230,20 @@ struct xe_device *xe_device_create(struct pci_dev *pdev, init_waitqueue_head(&xe->ufence_wq); drmm_mutex_init(&xe->drm, &xe->usm.lock); - xa_init_flags(&xe->usm.asid_to_vm, XA_FLAGS_ALLOC1); + xa_init_flags(&xe->usm.asid_to_vm, XA_FLAGS_ALLOC); + + if (IS_ENABLED(CONFIG_DRM_XE_DEBUG)) { + /* Trigger a large asid and an early asid wrap. */ + u32 asid; + + BUILD_BUG_ON(XE_MAX_ASID < 2); + err = xa_alloc_cyclic(&xe->usm.asid_to_vm, &asid, NULL, + XA_LIMIT(XE_MAX_ASID - 2, XE_MAX_ASID - 1), + &xe->usm.next_asid, GFP_KERNEL); + drm_WARN_ON(&xe->drm, err); + if (err >= 0) + xa_erase(&xe->usm.asid_to_vm, asid); + } drmm_mutex_init(&xe->drm, &xe->persistent_engines.lock); INIT_LIST_HEAD(&xe->persistent_engines.list); diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c index 1b4d340d0604..7c0ae4373180 100644 --- a/drivers/gpu/drm/xe/xe_vm.c +++ b/drivers/gpu/drm/xe/xe_vm.c @@ -1996,13 +1996,14 @@ int xe_vm_create_ioctl(struct drm_device *dev, void *data, if (xe->info.has_asid) { mutex_lock(&xe->usm.lock); err = xa_alloc_cyclic(&xe->usm.asid_to_vm, &asid, vm, - XA_LIMIT(0, XE_MAX_ASID - 1), + XA_LIMIT(1, XE_MAX_ASID - 1), &xe->usm.next_asid, GFP_KERNEL); mutex_unlock(&xe->usm.lock); - if (err) { + if (err < 0) { xe_vm_close_and_put(vm); return err; } + err = 0; vm->usm.asid = asid; } |