tools/guest: Fix comment regarding CPUID compatibility
authorAndrew Cooper <andrew.cooper3@citrix.com>
Thu, 3 Feb 2022 18:03:49 +0000 (18:03 +0000)
committerAndrew Cooper <andrew.cooper3@citrix.com>
Fri, 4 Feb 2022 15:45:24 +0000 (15:45 +0000)
commit47dbbe3878a002bb9bfa7ab24c0e7dc57b894ac7
treeade6fb6bfa62b8238fff1342a4d75163592c516f
parente253d0a65cca3770f404241f2435791b61159cd6
tools/guest: Fix comment regarding CPUID compatibility

It was Xen 4.14 where CPUID data was added to the migration stream, and 4.13
that we need to worry about with regards to compatibility.  Xen 4.12 isn't
relevant.

Expand and correct the commentary.

Fixes: 111c8c33a8a1 ("x86/cpuid: do not expand max leaves on restore")
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
(cherry picked from commit 820cc393434097f3b7976acdccbf1d96071d6d23)
tools/libs/guest/xg_cpuid_x86.c