[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH RFC 2/4] x86/dom0: prevent PVH Dom0 from mapping read-only the IO APIC area
>>> On 30.06.17 at 17:34, <roger.pau@xxxxxxxxxx> wrote: > On Fri, Jun 30, 2017 at 05:31:36AM -0600, Jan Beulich wrote: >> >>> Roger Pau Monne <roger.pau@xxxxxxxxxx> 04/24/17 1:52 PM >>> >> >This is emulated by Xen and must not be mapped into PVH Dom0 p2m. >> >> Yes, but this reminds of of the reason we permit the r/o mapping in PV >> Dom0, and I wonder how well the emulated variant is going to work with >> ACPI methods accessing the IO-APICs. Let's hope there's not going to >> be any problems. > > Won't ACPI be satisfied by accessing the emulated vIO APIC? That's > available, and should reflect the real IO APIC state in most cases > (except for GSIs in use by Xen). This "most cases" is what I'm not sufficiently happy with; hence the "let's hope ...". Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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