On Wed, Aug 22, 2018 at 09:52:00AM +0200, Roger Pau Monne wrote: > 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 all Dom0 modes (as opposed to the inclusive option > which only works for PV Dom0). > > Signed-off-by: Roger Pau Monné <roger....@citrix.com> > Reviewed-by: Kevin Tian <kevin.t...@intel.com>
Reviewed-by: Wei Liu <wei.l...@citrix.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
