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From 1ae41fd261b58aee381d59e7fbf0d5743bbc8b21 Mon Sep 17 00:00:00 2001
From: Chunming Zhou <David1.Zhou@amd.com>
Date: Wed, 27 Apr 2016 18:07:41 +0800
Subject: [PATCH 1063/1110] drm/amdgpu: add pipeline sync for compute job
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
hardware ring is async processed, the job is executed in parelell.
In some case, this will result vm fault, like jobs with different vmids.
Change-Id: Ia5446eba1eaf25a337cb14e857a7fc00862b718b
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Signed-off-by: Kalyan Alle <kalyan.alle@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 3a12305..6399429 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -307,7 +307,8 @@ int amdgpu_vm_flush(struct amdgpu_ring *ring,
int r;
if (ring->funcs->emit_pipeline_sync && (
- pd_addr != AMDGPU_VM_NO_FLUSH || gds_switch_needed))
+ pd_addr != AMDGPU_VM_NO_FLUSH || gds_switch_needed ||
+ ring->type == AMDGPU_RING_TYPE_COMPUTE))
amdgpu_ring_emit_pipeline_sync(ring);
if (pd_addr != AMDGPU_VM_NO_FLUSH) {
--
2.7.4
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