On Tue, Aug 07, 2018 at 10:45:32AM -0600, Tamas K Lengyel wrote: > On Tue, Aug 7, 2018 at 10:04 AM Tamas K Lengyel > <tamas.k.leng...@gmail.com> wrote: > (XEN) [VT-D]iommu.c:919: iommu_fault_status: Fault Overflow > (XEN) [VT-D]iommu.c:921: iommu_fault_status: Primary Pending Fault > (XEN) [VT-D]DMAR:[DMA Read] Request device [0000:00:02.0] fault addr > 428f926000, iommu reg = ffff82c000a0c000 > (XEN) [VT-D]DMAR: reason 06 - PTE Read access is not set > (XEN) print_vtd_entries: iommu #0 dev 0000:00:02.0 gmfn 428f926 > (XEN) root_entry[00] = 43aaae001 > (XEN) context[10] = 2_43cf92001 > (XEN) l4[000] = 9c0000043cf91107 > (XEN) l3[10a] = 8000000000000000 > (XEN) l3[10a] not present > > The fault is repeated a million times per second and the system is > pretty much stalled.
As Jan says, this page is outside of any range in the memory map. I wonder however what's in there. I think (also seeing the PV issues) you should bring this up with the driver maintainers, it might actually be a bug that the driver is trying to access such address. In the meantime, you can try to add to the command line: rmrr=0x428f926=0:0:2.0 In order to force an iommu mapping of this address. Thanks, Roger. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel