[PATCH 5.12 104/363] drm/amdgpu: Add mem sync flag for IB allocated by SA

From: Greg Kroah-Hartman
Date: Mon May 17 2021 - 10:16:19 EST


From: Jinzhou Su <Jinzhou.Su@xxxxxxx>

[ Upstream commit 5c88e3b86a88f14efa0a3ddd28641c6ff49fb9c4 ]

The buffer of SA bo will be used by many cases. So it's better
to invalidate the cache of indirect buffer allocated by SA before
commit the IB.

Signed-off-by: Jinzhou Su <Jinzhou.Su@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index 7645223ea0ef..97c11aa47ad0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -77,6 +77,8 @@ int amdgpu_ib_get(struct amdgpu_device *adev, struct amdgpu_vm *vm,
}

ib->ptr = amdgpu_sa_bo_cpu_addr(ib->sa_bo);
+ /* flush the cache before commit the IB */
+ ib->flags = AMDGPU_IB_FLAG_EMIT_MEM_SYNC;

if (!vm)
ib->gpu_addr = amdgpu_sa_bo_gpu_addr(ib->sa_bo);
--
2.30.2