drm/amdgpu: restrict BAR0 fallback read to SR-IOV VFs only

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The BAR0 fallback read path was introduced as a workaround for SR-IOV VFs
where the VRAM aperture is not available during early init. Restrict this
workaround to only SR-IOV VFs where it's needed.

Reported-by: gloveless@jqluv.com
Fixes: cba4928cdf ("drm/amdgpu: reduce early full GPU access during SR-IOV init")
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patch.msgid.link/20260826185102.2269511-1-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit d8a0affd20)

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Mario Limonciello 2026-08-26 13:51:02 -05:00 • committed by Alex Deucher

parent 94e25cb6ab

commit bd1f08246b

1 changed files with 3 additions and 0 deletions

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drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

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