git/linux-net
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/ synced 2026-04-18 06:33:43 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amdgpu: remove VI hw bug workaround v3

Browse Source 
The workaround simply doesn't work because VM mappings
are controlled by userspace not the kernel.

Additional to that this is just a performance problem
which happens if you have holes in your VM mapping.

v2: adjust virtual addr alignment as well.
v3: fix trivial warning

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Monk Liu  <monk.liu@amd.com> (v1)
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com> (v2)
This commit is contained in:
Christian König
2015-08-07 20:22:40 +02:00
committed by Alex Deucher
parent 00d2a2b21d
commit c548b345d1
2 changed files with 1 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
View File

@@ -223,18 +223,6 @@ int amdgpu_bo_create_restricted(struct amdgpu_device *adev,
size_t acc_size;
int r;
/* VI has a hw bug where VM PTEs have to be allocated in groups of 8.
* do this as a temporary workaround
*/
if (!(domain & (AMDGPU_GEM_DOMAIN_GDS | AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA))) {
if ((adev->asic_type >= CHIP_TOPAZ) && (adev->asic_type != CHIP_FIJI)) {
if (byte_align & 0x7fff)
byte_align = ALIGN(byte_align, 0x8000);
if (size & 0x7fff)
size = ALIGN(size, 0x8000);
}
}
page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT;
size = ALIGN(size, PAGE_SIZE);