Commit 0c03b912 authored Nov 07, 2017 by pding Committed by Alex Deucher Dec 04, 2017

drm/amdgpu: bypass FB resizing for SRIOV VF



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: Pixel Ding <Pixel.Ding@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent c6332b97

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

+4 −0

Original line number	Diff line number	Diff line
		@@ -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,

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