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drm/amdgpu: fix huge page handling on Vega10

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We accidentially set the huge flag on the parent instead of the childs.
This caused some VM faults under memory pressure.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Tested-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Christian König 2018-11-12 18:08:31 +01:00 committed by Alex Deucher
parent 4d454e9ffd
commit c1a17777eb
1 changed files with 10 additions and 8 deletions
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18
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@ -1632,13 +1632,6 @@ static int amdgpu_vm_update_ptes(struct amdgpu_pte_update_params *params,
continue;
}
/* First check if the entry is already handled */
if (cursor.pfn < frag_start) {
cursor.entry->huge = true;
amdgpu_vm_pt_next(adev, &cursor);
continue;
}
/* If it isn't already handled it can't be a huge page */
if (cursor.entry->huge) {
/* Add the entry to the relocated list to update it. */
@ -1701,8 +1694,17 @@ static int amdgpu_vm_update_ptes(struct amdgpu_pte_update_params *params,
}
} while (frag_start < entry_end);
if (frag >= shift)
if (amdgpu_vm_pt_descendant(adev, &cursor)) {
/* Mark all child entries as huge */
while (cursor.pfn < frag_start) {
cursor.entry->huge = true;
amdgpu_vm_pt_next(adev, &cursor);
}
} else if (frag >= shift) {
/* or just move on to the next on the same level. */
amdgpu_vm_pt_next(adev, &cursor);
}
}
return 0;