From d84a430d9f7b1ce6baedf1305106d0ae706aca76 Mon Sep 17 00:00:00 2001 From: Jonathan Kim Date: Tue, 17 Mar 2020 15:43:41 -0400 Subject: drm/amdgpu: fix race between pstate and remote buffer map Vega20 arbitrates pstate at hive level and not device level. Last peer to remote buffer unmap could drop P-State while another process is still remote buffer mapped. With this fix, P-States still needs to be disabled for now as SMU bug was discovered on synchronous P2P transfers. This should be fixed in the next FW update. Signed-off-by: Jonathan Kim Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h index 06fe30e1492d..b13c14d6b820 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h @@ -349,10 +349,6 @@ struct amdgpu_vm_manager { */ struct idr pasid_idr; spinlock_t pasid_lock; - - /* counter of mapped memory through xgmi */ - uint32_t xgmi_map_counter; - struct mutex lock_pstate; }; #define amdgpu_vm_copy_pte(adev, ib, pe, src, count) ((adev)->vm_manager.vm_pte_funcs->copy_pte((ib), (pe), (src), (count))) -- cgit v1.2.3-70-g09d2