drm/amdgpu: fix the VM fault while write at the top of the invisible vram

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Raven2 has a HW issue that it is unable to use the vram which is out of
MC_VM_SYSTEM_APERTURE_HIGH_ADDR. So here is the workaround that increase system
aperture high address to get rid of the VM fault and hardware hang.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Huang Rui 2018-01-16 10:42:58 +08:00 • committed by Alex Deucher

parent 28ab1229c3

commit 760067769e

2 changed files with 26 additions and 4 deletions

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15

drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c

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15

drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c

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