From 4ab4016aaf82153d144fa678cd6b4b5b6f25ed70 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Christian=20K=C3=B6nig?= Date: Thu, 3 Aug 2017 20:30:50 +0200 Subject: [PATCH] drm/amdgpu: drop the extra VM huge page flag v2 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Just add the flags to the addr field as well. v2: add some more comments that the flag is for huge pages. Signed-off-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 18 +++++++++--------- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 1 - 2 files changed, 9 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 420026bc2514..14012e80fa27 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -331,7 +331,6 @@ static int amdgpu_vm_alloc_levels(struct amdgpu_device *adev, entry->bo = pt; entry->addr = 0; - entry->huge_page = false; } if (level < adev->vm_manager.num_level) { @@ -1083,11 +1082,12 @@ static int amdgpu_vm_update_level(struct amdgpu_device *adev, pt = amdgpu_bo_gpu_offset(bo); pt = amdgpu_gart_get_vm_pde(adev, pt); - if (parent->entries[pt_idx].addr == pt || - parent->entries[pt_idx].huge_page) + /* Don't update huge pages here */ + if ((parent->entries[pt_idx].addr & AMDGPU_PDE_PTE) || + parent->entries[pt_idx].addr == (pt | AMDGPU_PTE_VALID)) continue; - parent->entries[pt_idx].addr = pt; + parent->entries[pt_idx].addr = pt | AMDGPU_PTE_VALID; pde = pd_addr + pt_idx * 8; if (((last_pde + 8 * count) != pde) || @@ -1284,15 +1284,14 @@ static void amdgpu_vm_handle_huge_pages(struct amdgpu_pte_update_params *p, dst = amdgpu_gart_get_vm_pde(p->adev, dst); flags = AMDGPU_PTE_VALID; } else { + /* Set the huge page flag to stop scanning at this PDE */ flags |= AMDGPU_PDE_PTE; } - if (entry->addr == dst && - entry->huge_page == !!(flags & AMDGPU_PDE_PTE)) + if (entry->addr == (dst | flags)) return; - entry->addr = dst; - entry->huge_page = !!(flags & AMDGPU_PDE_PTE); + entry->addr = (dst | flags); if (use_cpu_update) { pd_addr = (unsigned long)amdgpu_bo_kptr(parent->bo); @@ -1351,7 +1350,8 @@ static int amdgpu_vm_update_ptes(struct amdgpu_pte_update_params *params, amdgpu_vm_handle_huge_pages(params, entry, parent, nptes, dst, flags); - if (entry->huge_page) + /* We don't need to update PTEs for huge pages */ + if (entry->addr & AMDGPU_PDE_PTE) continue; pt = entry->bo; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h index 9c309c5a86f1..f12c12fec3c0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h @@ -103,7 +103,6 @@ struct amdgpu_bo_list_entry; struct amdgpu_vm_pt { struct amdgpu_bo *bo; uint64_t addr; - bool huge_page; /* array of page tables, one for each directory entry */ struct amdgpu_vm_pt *entries; -- 2.20.1