missed in gmc9.
v2: squash in build fix (Rex)
Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
        adev->gmc.aper_base = pci_resource_start(adev->pdev, 0);
        adev->gmc.aper_size = pci_resource_len(adev->pdev, 0);
 
+#ifdef CONFIG_X86_64
+       if (adev->flags & AMD_IS_APU) {
+               adev->gmc.aper_base = gfxhub_v1_0_get_mc_fb_offset(adev);
+               adev->gmc.aper_size = adev->gmc.real_vram_size;
+       }
+#endif
        /* In case the PCI BAR is larger than the actual amount of vram */
        adev->gmc.visible_vram_size = adev->gmc.aper_size;
        if (adev->gmc.visible_vram_size > adev->gmc.real_vram_size)