tree 03a22973e807fa9607ae7deb60c2939f1b8863d1
parent b5556a67f08559b6c1597f6396c1f9ef460f62b4
author Roland McGrath <roland@redhat.com> 1202333985 +0100
committer Ingo Molnar <mingo@elte.hu> 1202333985 +0100

x86: fix iret exception recovery on 64-bit

This change broke recovery of exceptions in iret:

   commit 72fe4858544292ad64600765cb78bc02298c6b1c
   Author: Glauber de Oliveira Costa <gcosta@redhat.com>

       x86: replace privileged instructions with paravirt macros

The ENTRY(native_iret) macro adds alignment padding before the iretq
instruction, so "iret_label" no longer points exactly at the instruction.
It was sloppy to leave the old "iret_label" label behind when replacing
its nearby use.  Removing it would have revealed the other use of the
label later in the file, and upon noticing that use, anyone exercising
the minimum of attention to detail expected of anyone touching this
subtle code would realize it needed to change as well.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>