From: Chunming Zhou Date: Sun, 12 Jun 2016 07:43:20 +0000 (+0800) Subject: drm/amdgpu: evict vram when gpu reset X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8b2ac103208b6933e265b3dc81776c2974cb5c7a;p=linux-beck.git drm/amdgpu: evict vram when gpu reset On workstation cards with ECC vram, the entirety of vram is cleared to 0 on asic init to set the ECC status correctly. On non ECC boards, I don't think they do any explicit clearing, but the vram controller is reset which may cause issues with the data there. Signed-off-by: Chunming Zhou Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index a7a84286a06f..b9ddb4ffc90a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1896,6 +1896,9 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev) atomic_inc(&adev->gpu_reset_counter); + /* evict vram memory */ + amdgpu_bo_evict_vram(adev); + /* block scheduler */ for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { struct amdgpu_ring *ring = adev->rings[i]; @@ -1904,6 +1907,7 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev) continue; kthread_park(ring->sched.thread); } + /* block TTM */ resched = ttm_bo_lock_delayed_workqueue(&adev->mman.bdev);