Document difference between amdgpu.gartsize and amdgpu.gttsize module parameters, as initially explained by Alex Deucher here: https://lists.freedesktop.org/archives/dri-devel/2022-October/375358.html Signed-off-by: Peter Maucher <bellosilicio@xxxxxxxxx> --- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index bf2d50c8c92a..d647836ba7b8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -230,17 +230,18 @@ module_param_named(vis_vramlimit, amdgpu_vis_vram_limit, int, 0444); /** * DOC: gartsize (uint) - * Restrict the size of GART in Mib (32, 64, etc.) for testing. The default is -1 (The size depends on asic). + * Restrict the size of GART (for kernel use) in Mib (32, 64, etc.) for testing. + * The default is -1 (The size depends on asic). */ -MODULE_PARM_DESC(gartsize, "Size of GART to setup in megabytes (32, 64, etc., -1=auto)"); +MODULE_PARM_DESC(gartsize, "Size of kernel GART to setup in megabytes (32, 64, etc., -1=auto)"); module_param_named(gartsize, amdgpu_gart_size, uint, 0600); /** * DOC: gttsize (int) - * Restrict the size of GTT domain in MiB for testing. The default is -1 (It's VRAM size if 3GB < VRAM < 3/4 RAM, - * otherwise 3/4 RAM size). + * Restrict the size of GTT domain (for userspace usage) in MiB for testing. + * The default is -1 (It's VRAM size if 3GB < VRAM < 3/4 RAM, otherwise 3/4 RAM size). */ -MODULE_PARM_DESC(gttsize, "Size of the GTT domain in megabytes (-1 = auto)"); +MODULE_PARM_DESC(gttsize, "Size of the GTT userspace domain in megabytes (-1 = auto)"); module_param_named(gttsize, amdgpu_gtt_size, int, 0600); /** -- 2.38.1
