From 5b2906ecf4ceb6de5e889d367034113d1612bc75 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Christian=20K=C3=B6nig?= Date: Tue, 29 Oct 2013 20:14:50 +0100 Subject: [PATCH] drm/radeon: initially clear page tables MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Clear page tables after allocating them in case we don't completely fill them later. Signed-off-by: Christian König Signed-off-by: Alex Deucher --- 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 f6947dd2a992..fd109d3cae66 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; -- 2.20.1