[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] XSA-60 solutions
At 12:40 +0100 on 09 Oct (1381322425), Jan Beulich wrote: > >>> On 09.10.13 at 12:41, "Liu, Jinsong" <jinsong.liu@xxxxxxxxx> wrote: > > Another point is, for shadow, currently Xen drop all shadows so that any > > new > > ones would be created on demand with UC. It works safely for XSA-60, but > > seems > > not good enough. We can still use IA32_PAT to solve it, not touch shadow > > page > > table itself. > > Tim, any though on this? The existing shadow solution is OK, I think -- but if the same solution that's used for EPT can be applied there, so much the better. Tim. > > One thing I need more confirm from AMD side: iirc, AMD IOMMU always works > > with snooped so cache cohernecy has been guaranteed, so no need do anything > > for guest cr0.cd setting, no matter shadow or NPT, right? If yes, most code > > could be done w/ Intel specific. > > Iirc SVM allows the guest to run with CR0.CD set. Whether that's > entirely valid to do I'm not certain, but I suppose it's at least to some > degree due to the major inhibiting factor (hyperthreads) not existing > there. > > Jan > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxx > http://lists.xen.org/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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