The idea is from
commit
a50fe7078035 ("drm/amdkfd: Only apply heavy-weight TLB flush on Aldebaran")
and
commit
f61c40c0757a ("drm/amdkfd: enable heavy-weight TLB flush on Arcturus").
At the moment, heavy-weight TLB could cause problems on ASICs except
Aldebaran and Arcturus.
A simple hipMallocManaged/hipFree program could trigger this issue.
[ 97.787657] amdgpu 0000:01:00.0: amdgpu: wait for kiq fence error: 0.
[ 106.868758] amdgpu: qcm fence wait loop timeout expired
[ 106.868966] amdgpu: The cp might be in an unrecoverable state due to an unsuccessful queues preemption
[ 106.869203] amdgpu: Failed to evict process queues
[ 106.869261] amdgpu: Failed to quiesce KFD
Signed-off-by: Lang Yu <Lang.Yu@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
if (r)
break;
}
- kfd_flush_tlb(pdd, TLB_FLUSH_HEAVYWEIGHT);
+
+ if (kfd_flush_tlb_after_unmap(pdd->dev))
+ kfd_flush_tlb(pdd, TLB_FLUSH_HEAVYWEIGHT);
}
return r;