From c5087e15068bb9eaa66aa181dfa41fc98aa09df1 Mon Sep 17 00:00:00 2001 From: Pierre-Eric Pelloux-Prayer Date: Tue, 10 Sep 2019 16:58:23 +0200 Subject: [PATCH] drm/amdgpu: do not execute 0-sized IBs Signed-off-by: Pierre-Eric Pelloux-Prayer --- drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c index 6882eeb93b4e..f6873d0ee893 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c @@ -224,6 +224,11 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs, !amdgpu_sriov_vf(adev)) /* for SRIOV preemption, Preamble CE ib must be inserted anyway */ continue; + if (ib->length_dw == 0) { + /* On Navi gmc_v10_0_flush_gpu_tlb emits 0 sized IB */ + continue; + } + amdgpu_ring_emit_ib(ring, job, ib, status); status &= ~AMDGPU_HAVE_CTX_SWITCH; } -- 2.23.0.rc1