[Xen-devel] [PATCH 0/3] x86: Fixes to shadowing dom0

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

It turns out there are some real bugs attempting to shadow dom0, and it is
because of these that XSA-273 went out with `pv-l1tf=` defaulting to not
shadowing dom0.  They aren't security issues themselves.

Patch 1 is a general problem with dom0 and 1G superpages, and wants to be
taken onto all releases.

Patches 2 and 3 are various backports of work already upstream, to fix the
shadowing of PV guests with 2M superpages.

~Andrew

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