On Tue, Dec 04, 2018 at 05:46:38AM +0000, Connor Davis wrote: > >>> > > - 0x70 > >>> > > - 0x71 > > These are accessed from reassert_nmi. This is only called from default_do_nmi > in the version the guest is based on (4.20-rc2).
Ops, forgot to answer this one. Xen sets the 'CMOS RTC Not Present' flag in the IA-PC bootflags, those registers however are shared with the CMOS RAM. I have to admit I'm not sure how this CMOS RTC flag is expected to behave, since the CMOS RTC / RAM implementation seems to be completely intertwined. IMO it would make sense to have a flag to disable CMOS completely, but then there are NMI related registers in those IO ports, so I'm afraid there isn't much that can be done here, apart from making sure the non-RTC functionality is good enough for guests. Roger. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
