From: Christian König Date: Wed, 22 Jun 2016 12:25:55 +0000 (+0200) Subject: drm/amdgpu: don't update page tables for VM emulation X-Git-Tag: v4.8-rc1~62^2~23^2~51 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9a79588c42bf89cff48fdc6db4aab4aeb9d862b6;p=karo-tx-linux.git drm/amdgpu: don't update page tables for VM emulation It's just overhead to do so and allocating a VMID when we don't need one is actually a bit dangerous. Signed-off-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c index cf97a87f76a6..95b248159947 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c @@ -656,20 +656,21 @@ static int amdgpu_cs_ib_vm_chunk(struct amdgpu_device *adev, /* Only for UVD/VCE VM emulation */ if (ring->funcs->parse_cs) { + p->job->vm = NULL; for (i = 0; i < p->job->num_ibs; i++) { r = amdgpu_ring_parse_cs(ring, p, i); if (r) return r; } - } - - p->job->vm_pd_addr = amdgpu_bo_gpu_offset(vm->page_directory); + } else { + p->job->vm_pd_addr = amdgpu_bo_gpu_offset(vm->page_directory); - r = amdgpu_bo_vm_update_pte(p, vm); - if (!r) - amdgpu_cs_sync_rings(p); + r = amdgpu_bo_vm_update_pte(p, vm); + if (r) + return r; + } - return r; + return amdgpu_cs_sync_rings(p); } static int amdgpu_cs_handle_lockup(struct amdgpu_device *adev, int r)