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| author | Alex Deucher <alexander.deucher@amd.com> | 2025-02-27 20:31:28 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-04-07 22:18:33 +0300 |
| commit | 48b733d99b0d8db01fcf55d7ae31f69510fb1a4a (patch) | |
| tree | 6513fc9471497f28f5bf59a564b2dc089fc69f8b /drivers/gpu/drm/amd/amdgpu/amdgpu.h | |
| parent | b71b7cd91c642f282794b82cf2b8159899b9aa59 (diff) | |
| download | linux-48b733d99b0d8db01fcf55d7ae31f69510fb1a4a.tar.xz | |
drm/amdgpu: add rebar parameter
Add a new parameter to disable BAR resizing. Note that this
only disables the driver from attempting to resize the BAR,
The BIOS may have resized the BAR at boot.
Some teams have found this useful in debugging P2P DMA
issues on systems where the available MMIO space did not allow
for all of the GPUs present to resize their BARs.
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 9a9e5249c63f..8316f93c1cce 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -266,6 +266,7 @@ extern int amdgpu_umsch_mm_fwlog; extern int amdgpu_user_partt_mode; extern int amdgpu_agp; +extern int amdgpu_rebar; extern int amdgpu_wbrf; |