2011/1/7 Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>: >> > The errors >> > >> > [ 3.778476] [drm:r100_ring_test] *ERROR* radeon: ring test failed >> > (sracth(0x15E4)=0xCAFEDEAD) >> > [ 3.781010] [drm:r100_cp_init] *ERROR* radeon: cp isn't working (-22). >> > [ 3.782542] radeon 0000:00:04.0: failled initializing CP (-22). >> > [ 3.784006] radeon 0000:00:04.0: Disabling GPU acceleration >> > >> > Seem to be disabling GPU functionality. For now, I am interested in >> > Graphics functionality of the ATI card and not GPGPU functionality. >> > >> > I will appreciate if you can help me with some information on solving >> > this problem. Let me know if I should be asking this question on >> > another forum. Please keep me in CC. >> >> Looks like dri-devel material, added to CC. >> >> As a first guess, maybe the system memory pages accessed by the GPU GART >> aren't the same ones intended for this by the VM. > > I actually have patches for that (sorry for the late reply). > > Try: > git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git devel/ttm.pci-api.v3 > > But I am not sure if they would make any difference here. You said > you are using KVM-QEMU - you must also be using an IOMMU? Does the IOMMU > give you any errors? > Yes I want to pass-through the ATI Radeon card to VM in KVM. I have enabled the IOMMU support and it works perfectly alright. I tried passing through a network card it worked. Should I try the patch you suggested? > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
