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drm/amd: Clarify kdoc for amdgpu.gttsize

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Effectively amdgpu.gttsize gets set to ~1/2 of RAM, but that's controlled
by what the TTM page limit is set to.  Clarify the kdoc.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Mario Limonciello
2025-01-16 15:47:11 -06:00
committed by Alex Deucher
parent dc915275ea
commit 7e4cb7dea2
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
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@@ -280,7 +280,7 @@ module_param_named(gartsize, amdgpu_gart_size, uint, 0600);
/**
* DOC: gttsize (int)
* Restrict the size of GTT domain (for userspace use) in MiB for testing.
* The default is -1 (Use 1/2 RAM, minimum value is 3GB).
* The default is -1 (Use value specified by TTM).
*/
MODULE_PARM_DESC(gttsize, "Size of the GTT userspace domain in megabytes (-1 = auto)");
module_param_named(gttsize, amdgpu_gtt_size, int, 0600);