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drm/amdgpu: avoid the modulo in amdgpu_vm_get_entry

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We can do this with a simple mask as well.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2017-12-01 13:28:46 +01:00 committed by Alex Deucher
parent 2ffe31deb2
commit e3a1b32a12
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@ -1285,11 +1285,11 @@ void amdgpu_vm_get_entry(struct amdgpu_pte_update_params *p, uint64_t addr,
*parent = NULL; *parent = NULL;
*entry = &p->vm->root; *entry = &p->vm->root;
while ((*entry)->entries) { while ((*entry)->entries) {
unsigned idx = addr >> amdgpu_vm_level_shift(p->adev, level++); unsigned shift = amdgpu_vm_level_shift(p->adev, level++);
idx %= amdgpu_bo_size((*entry)->base.bo) / 8;
*parent = *entry; *parent = *entry;
*entry = &(*entry)->entries[idx]; *entry = &(*entry)->entries[addr >> shift];
addr &= (1ULL << shift) - 1;
} }
if (level != p->adev->vm_manager.num_level) if (level != p->adev->vm_manager.num_level)