> -----Original Message----- > From: amd-gfx [mailto:amd-gfx-boun...@lists.freedesktop.org] On Behalf > Of Pixel Ding > Sent: Monday, November 06, 2017 10:08 PM > To: ckoenig.leichtzumer...@gmail.com; amd-gfx@lists.freedesktop.org > Cc: Ding, Pixel > Subject: [PATCH] drm/amdgpu: bypass FB resizing for SRIOV VF > > From: pding <pixel.d...@amd.com> > > It introduces 900ms latency in exclusive mode which causes failure > of driver loading. Host can resize the BAR before guest staring, > so the resizing is not necessary here. > > Signed-off-by: pding <pixel.d...@amd.com>
Reviewed-by: Alex Deucher <alexander.deuc...@amd.com> > --- > drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > index 6f01dda..bf2b008 100644 > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > @@ -768,6 +768,10 @@ int amdgpu_device_resize_fb_bar(struct > amdgpu_device *adev) > u16 cmd; > int r; > > + /* Bypass for VF */ > + if (amdgpu_sriov_vf(adev)) > + return 0; > + > /* Disable memory decoding while we change the BAR addresses > and size */ > pci_read_config_word(adev->pdev, PCI_COMMAND, &cmd); > pci_write_config_word(adev->pdev, PCI_COMMAND, > -- > 2.9.5 > > _______________________________________________ > amd-gfx mailing list > amd-gfx@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx
