drm/amdgpu/gmc: use PCI BARs for APUs in passthrough

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If the GPU is passed through to a guest VM, use the PCI
BAR for CPU FB access rather than the physical address of
carve out.  The physical address is not valid in a guest.

v2: Fix HDP handing as suggested by Michel

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <mdaenzer@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Alex Deucher 2022-03-09 18:02:11 -05:00

parent 1647b54ed5

commit b818a5d374

5 changed files with 8 additions and 7 deletions

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4

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

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2

drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c

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5

drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c

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2

drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c

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2

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

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