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drm/amdgpu: Fix KFD-related kernel oops on Hawaii

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[ Upstream commit dcafbd50f2e4d5cc964aae409fb5691b743fba23 ]

Hawaii needs to flush caches explicitly, submitting an IB in a user
VMID from kernel mode. There is no s_fence in this case.

Fixes: eb3961a57424 ("drm/amdgpu: remove fence context from the job")
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Felix Kuehling 2019-09-05 19:22:02 -04:00 committed by Greg Kroah-Hartman
parent f7ace7f252
commit e0af3b19ad
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
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@ -139,7 +139,8 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
/* ring tests don't use a job */
if (job) {
vm = job->vm;
fence_ctx = job->base.s_fence->scheduled.context;
fence_ctx = job->base.s_fence ?
job->base.s_fence->scheduled.context : 0;
} else {
vm = NULL;
fence_ctx = 0;