Commit 3f378758 authored Oct 22, 2019 by Pelloux-prayer, Pierre-eric Committed by Alex Deucher Oct 25, 2019

drm/amdgpu/sdma5: do not execute 0-sized IBs (v2)

This seems to help with https://bugs.freedesktop.org/show_bug.cgi?id=111481

.

v2: insert a NOP instead of skipping all 0-sized IBs to avoid breaking older hw

Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 5aed95bb

drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -309,6 +309,7 @@ static void gmc_v10_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,

		job->vm_pd_addr = amdgpu_gmc_pd_addr(adev->gart.bo);
		job->vm_needs_flush = true;
		job->ibs->ptr[job->ibs->length_dw++] = ring->funcs->nop;
		amdgpu_ring_pad_ib(ring, &job->ibs[0]);
		r = amdgpu_job_submit(job, &adev->mman.entity,
		AMDGPU_FENCE_OWNER_UNDEFINED, &fence);

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