[PATCH 5.9 325/391] drm/amdgpu: increase the reserved VM size to 2MB

From: Greg Kroah-Hartman
Date: Tue Nov 03 2020 - 16:48:33 EST


From: Christian König <christian.koenig@xxxxxxx>

commit 55bb919be4e4973cd037a04f527ecc6686800437 upstream.

Ideally this should be a multiple of the VM block size.
2MB should at least fit for Vega/Navi.

Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Reviewed-by: Madhav Chauhan <madhav.chauhan@xxxxxxx>
Reviewed-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
@@ -112,8 +112,8 @@ struct amdgpu_bo_list_entry;
#define AMDGPU_MMHUB_0 1
#define AMDGPU_MMHUB_1 2

-/* hardcode that limit for now */
-#define AMDGPU_VA_RESERVED_SIZE (1ULL << 20)
+/* Reserve 2MB at top/bottom of address space for kernel use */
+#define AMDGPU_VA_RESERVED_SIZE (2ULL << 20)

/* max vmids dedicated for process */
#define AMDGPU_VM_MAX_RESERVED_VMID 1