On 27/11/2018 13:06, Jan Beulich wrote: >>>> On 26.11.18 at 18:30, <paul.durr...@citrix.com> wrote: >> The page merging logic makes use of bits 1-8 and bit 63 of a PTE, which used >> to be specified as ignored. However, bits 5 and 6 are now specified as >> 'accessed' and 'dirty' bits and their use only remains safe as long as >> the DTE 'Host Access Dirty' bits remain clear. > Upon second thought - is this actually true with the XSA-275 > changes in place? As long as the domain is not running yet, > how would A and/or D bits get set?
DTE.HAD is an IOMMU control which Xen doesn't currently enable, so this isn't an issue in current usage. ~Andrew _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
