1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 387b4979f45a..1a7e05da470e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -833,6 +833,9 @@ struct amdgpu_ring {
 /* maximum number of VMIDs */
 #define AMDGPU_NUM_VM   16
 
+/* Maximum number of PTEs the hardware can write with one command */
+#define AMDGPU_VM_MAX_UPDATE_SIZE       0x3FFFF
+
 /* number of entries in page table */
 #define AMDGPU_VM_PTE_COUNT (1 << amdgpu_vm_block_size)