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[Xen-devel] [PATCH for-4.11 v2 0/3] x86: XSA-267 follow-up

The first patch alone should be sufficient to address an issue with the
XSA-267 changes, causing a BUG_ON() to be triggered. The other two
patches would, afaict, each individually also have avoided the issue,
hence I'm also including them here. While the first patch obviously is
a strong candidate for 4.11, the latter two are candidates too imo; at
least I consider them backporting candidates (albeit, to be clear, patch
2 is useful only as far back as we have exception recovery attached
to emulator stubs, i.e. no farther than 4.9).

1: x86/HVM: don't cause #NM to be raised in Xen
2: x86: guard against #NM
3: VMX: check host CR0 before entering guest


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