Revert "Revert "drm/amdkfd: Add heavy-weight TLB flush after unmapping""

erichuang22 · alexdeucher · commit f87534347a5d · 2021-07-28T16:37:17.000-04:00
This reverts commit 430f8e6. Revert reason: Issue has been resolved. Signed-off-by: Eric Huang <jinhuieric.huang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -1563,6 +1563,7 @@ static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep,
 			       i, args->n_devices);
 			goto unmap_memory_from_gpu_failed;
 		}
+		kfd_flush_tlb(peer_pdd, TLB_FLUSH_HEAVYWEIGHT);
 		args->n_success = i+1;
 	}
 	kfree(devices_arr);

Original file line number	Diff line number	Diff line change
`@@ -1563,6 +1563,7 @@ static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep,`
`1563`	`1563`	`i, args->n_devices);`
`1564`	`1564`	`goto unmap_memory_from_gpu_failed;`
`1565`	`1565`	`}`
	`1566`	`+ kfd_flush_tlb(peer_pdd, TLB_FLUSH_HEAVYWEIGHT);`
`1566`	`1567`	`args->n_success = i+1;`
`1567`	`1568`	`}`
`1568`	`1569`	`kfree(devices_arr);`