From: Christian König christian.koenig@amd.com
Clear page tables after allocating them in case we don't completely fill them later.
Signed-off-by: Christian König christian.koenig@amd.com --- drivers/gpu/drm/radeon/radeon_gart.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c index f6947dd..fd109d3 100644 --- a/drivers/gpu/drm/radeon/radeon_gart.c +++ b/drivers/gpu/drm/radeon/radeon_gart.c @@ -995,6 +995,10 @@ retry: radeon_asic_vm_set_page(rdev, ib, last_pde, last_pt, count, incr, R600_PTE_VALID); + + count *= RADEON_VM_PTE_COUNT; + radeon_asic_vm_set_page(rdev, ib, last_pt, 0, + count, 0, 0); }
count = 1; @@ -1009,6 +1013,9 @@ retry: radeon_asic_vm_set_page(rdev, ib, last_pde, last_pt, count, incr, R600_PTE_VALID);
+ count *= RADEON_VM_PTE_COUNT; + radeon_asic_vm_set_page(rdev, ib, last_pt, 0, + count, 0, 0); }
return 0; @@ -1170,6 +1177,9 @@ int radeon_vm_bo_update_pte(struct radeon_device *rdev, /* reserve space for pde addresses */ ndw += npdes * 2;
+ /* reserve space for clearing new page tables */ + ndw += npdes * 2 * RADEON_VM_PTE_COUNT; + /* update too big for an IB */ if (ndw > 0xfffff) return -ENOMEM;