diff options
author | Alex Deucher <alexander.deucher@amd.com> | 2022-03-10 02:02:11 +0300 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2022-03-25 19:40:24 +0300 |
commit | b818a5d374542ccec73dcfe578a081574029820e (patch) | |
tree | ee2d225a28041e48b29fc559d1574d7549aabee1 /drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | |
parent | 1647b54ed55d4d48c7199d439f8834626576cbe9 (diff) | |
download | linux-b818a5d374542ccec73dcfe578a081574029820e.tar.xz |
drm/amdgpu/gmc: use PCI BARs for APUs in passthrough
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>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c')
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c index ca9841d5669f..1932a3e4af7e 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c @@ -581,7 +581,7 @@ static int gmc_v8_0_mc_init(struct amdgpu_device *adev) adev->gmc.aper_size = pci_resource_len(adev->pdev, 0); #ifdef CONFIG_X86_64 - if (adev->flags & AMD_IS_APU) { + if ((adev->flags & AMD_IS_APU) && !amdgpu_passthrough(adev)) { adev->gmc.aper_base = ((u64)RREG32(mmMC_VM_FB_OFFSET)) << 22; adev->gmc.aper_size = adev->gmc.real_vram_size; } |