fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-06-06 19:18:15 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

nvc0: work around what looks like a code prefetch bug

Browse source 
Sounds very unlikely, but I don't have a better explanation at the
moment.
The GPU throws page faults at the first page after the code buffer
quite frequently on startup, and traces don't show us overflowing.
This commit is contained in:
Christoph Bumiller 2011-04-16 15:24:07 +02:00
parent f4ad25fefb
commit 25a7f66214
1 changed files with 4 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
src/gallium/drivers/nvc0/nvc0_screen.c
View file

@ -447,7 +447,10 @@ nvc0_screen_create(struct pipe_winsys *ws, struct nouveau_device *dev)
if (ret)
goto fail;
nouveau_resource_init(&screen->text_heap, 0, 1 << 20);
/* XXX: getting a page fault at the end of the code buffer every few
* launches, don't use the last 256 bytes to work around them - prefetch ?
*/
nouveau_resource_init(&screen->text_heap, 0, (1 << 20) - 0x100);
ret = nouveau_bo_new(dev, NOUVEAU_BO_VRAM, 1 << 12, 6 << 16,
&screen->uniforms);