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radeonsi: disable Smart Access Memory because CPU access has large overhead

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It will be remove completely in the next commit.

Related: https://gitlab.freedesktop.org/mesa/mesa/-/issues/8176

Cc: mesa-stable

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21525>
(cherry picked from commit d8b17b1752)
This commit is contained in:
Marek Olšák 2023-02-18 04:51:28 -05:00 • committed by Eric Engestrom
parent 5d0bb66d8e
commit 68e1cd631c
2 changed files with 3 additions and 1 deletions
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2
.pick_status.json
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@ -6142,7 +6142,7 @@
"description": "radeonsi: disable Smart Access Memory because CPU access has large overhead",
"nominated": true,
"nomination_type": 0,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": null
},

2
src/gallium/drivers/radeonsi/si_pipe.c
View file

@ -1141,6 +1141,8 @@ static struct pipe_screen *radeonsi_screen_create_impl(struct radeon_winsys *ws,
sscreen->options.enable_sam,
sscreen->options.disable_sam);
sscreen->info.smart_access_memory = false; /* VRAM has slower CPU access */
if (sscreen->info.gfx_level >= GFX9) {
sscreen->se_tile_repeat = 32 * sscreen->info.max_se;
} else {