> From: Roger Pau Monne [mailto:[email protected]] > Sent: Tuesday, August 21, 2018 3:50 PM > > Several people have reported hardware issues (malfunctioning USB > controllers) due to iommu page faults on Intel hardware. Those faults > are caused by missing RMRR (VTd) entries in the ACPI tables. Those can > be worked around on VTd hardware by manually adding RMRR entries on > the command line, this is however limited to Intel hardware and quite > cumbersome to do. > > In order to solve those issues add a new dom0-iommu=map-reserved > option that identity maps all regions marked as reserved in the memory > map. Note that regions used by devices emulated by Xen (LAPIC, > IO-APIC or PCIe MCFG regions) are specifically avoided. Note that this > option is available to a PVH Dom0 (as opposed to the inclusive option > which only works for PV Dom0). > > Signed-off-by: Roger Pau Monné <[email protected]>
Reviewed-by: Kevin Tian <[email protected]> _______________________________________________ Xen-devel mailing list [email protected] https://lists.xenproject.org/mailman/listinfo/xen-devel
