[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] x2APIC MSR range (XSA-108 follow-up)
On Tue, Oct 14, 2014 at 07:07:32AM +0000, Zhang, Yang Z wrote: > Matt Wilson wrote on 2014-10-13: > > On Mon, Oct 13, 2014 at 07:45:58AM +0100, Jan Beulich wrote: > >> All, > >> > >> during the embargo period of XSA-108 Matt pointed out that > >> restricting the emulated MSR range to 0x800-0x8ff isn't necessarily > >> the ultimately correct thing to do (as also noted in commit 61fdda7acf's > >> description): > >> The x2APIC MSR range really is being specified as 0x800-0xbff, as > >> opposed to the range considered for virtualization purposes > >> (0x800-0x8ff). In order to determine proper behavior here we'd like > >> to get clarification from you, particularly also in the light of > >> probing real hardware pointing out the existence of (at least) MSRs > >> 0xa00-0xa02. > > > > I recall the MSRs in question being 0xa00 and 0xa01. Perhaps 0xa02 > > also provided a value, but I'm not as sure. > > Which platform are you seeing it? Sandy Bridge and Ivy Bridge. --msw _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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