Jan Beulich 922eea2ce5 x86/xen/32: Simplify ring check in xen_iret_crit_fixup()
This can be had with two instead of six insns, by just checking the high
CS.RPL bit.

Also adjust the comment - there would be no #GP in the mentioned cases, as
there's no segment limit violation or alike. Instead there'd be #PF, but
that one reports the target EIP of said branch, not the address of the
branch insn itself.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lkml.kernel.org/r/a5986837-01eb-7bf8-bf42-4d3084d6a1f5@suse.com
2019-11-19 21:58:28 +01:00
..
2019-07-14 20:36:12 +02:00
2019-09-19 13:27:23 -07:00
2019-09-15 21:37:14 +02:00