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drm/amdkfd: Add sync after creating vram bo 

There will be data corruption on vram allocated by svm
if the initialization is not complete and application is
writting on the memory. Adding sync to wait for the
initialization completion is to resolve this issue.

Signed-off-by: Eric Huang <jinhuieric.huang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Huang 2023-01-09 14:16:42 -05:00 committed by Alex Deucher
parent 99f1a36c90
commit ba029e9991
1 changed files with 9 additions and 0 deletions
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9
drivers/gpu/drm/amd/amdkfd/kfd_svm.c
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@ -570,6 +570,15 @@ svm_range_vram_node_new(struct amdgpu_device *adev, struct svm_range *prange,
goto reserve_bo_failed;
}
if (clear) {
r = amdgpu_bo_sync_wait(bo, AMDGPU_FENCE_OWNER_KFD, false);
if (r) {
pr_debug("failed %d to sync bo\n", r);
amdgpu_bo_unreserve(bo);
goto reserve_bo_failed;
}
}
r = dma_resv_reserve_fences(bo->tbo.base.resv, 1);
if (r) {
pr_debug("failed %d to reserve bo\n", r);