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drm/amdgpu: Fix a bug on flag table_freed 

table_freed will be always true when mapping a memory with size
bigger than 2MB. The problem is page table's entries are always
existed, but existing mapping depends on page talbe's bo, so
using a check of page table's bo existed will resolve the issue.

Signed-off-by: Eric Huang <jinhuieric.huang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Huang 2021-05-29 18:34:20 -04:00 committed by Alex Deucher
parent ba809007f2
commit f0e0687cf6
1 changed files with 5 additions and 2 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@ -1619,9 +1619,12 @@ static int amdgpu_vm_update_ptes(struct amdgpu_vm_update_params *params,
* completely covered by the range and so potentially still in use.
*/
while (cursor.pfn < frag_start) {
amdgpu_vm_free_pts(adev, params->vm, &cursor);
/* Make sure previous mapping is freed */
if (cursor.entry->base.bo) {
params->table_freed = true;
amdgpu_vm_free_pts(adev, params->vm, &cursor);
}
amdgpu_vm_pt_next(adev, &cursor);
params->table_freed = true;
}
} else if (frag >= shift) {