[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v3] Sanity check xsave area when migrating or restoring from older Xen verions
>>> On 21.10.14 at 17:15, <dkoch@xxxxxxxxxxx> wrote: > The one anomaly I've wondered about is the point of > ctxt->xfeature_mask; we save it but never use it (outside of a print > statement) on restore. Do we want to compare it against the global > xfeature_mask for sanity (print a warning on mismatch) or just ignore > it. I wouldn't suggest removing it as it would cause another > compatibility issue with migration. This was discussed before, and you could also turn to the commit which eliminated its use to understand why (e2e45c5628 "x86/xsave: remove xfeat_mask checking from validate_xstate()"). And yes, eliminating the _field_ is not an option. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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