On Wed, 2014-08-06 at 14:22 -0700, Nishank Trivedi wrote: > Hi > > I'm trying to do a pci-passthrough of Intel 82599 10GbE card, with guest > having 8G of memory. I see following error - > > intel_iommu_map: iommu width (48) is not sufficient for the mapped > address (fffffffffe001000) > kvm_iommu_map_address:iommu failed to map pfn=45800 > > I checked IOMMU capability register and SAGAW as well as MGAW are 48bits > for both IOMMU. > > # dmesg | grep ecap > dmar: IOMMU 0: reg_base_addr dfff0000 ver 1:0 cap d2078c106f0462 ecap f020fe > dmar: IOMMU 1: reg_base_addr bfff0000 ver 1:0 cap d2078c106f0462 ecap f020fe > > # cat /proc/cpuinfo | grep "address sizes" > address sizes : 46 bits physical, 48 bits virtual > > In DMAR table, I see host address width set to "2D", i.e. 46bit, which > is ok as it is same as physical address size. Any suggestions on what > might be going wrong here? Try vfio-pci instead of pci-assign -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
