tree 6757b77ee2c712c4b64f334ff8c5b1a41a64083b
parent e2f1f19272f8de0374ad297b9806f8b6509e0013
author Andi Kleen <ak@suse.de> 1182558565 +0200
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1182562879 -0700

x86_64: Ignore compat mode SYSCALL when IA32_EMULATION is not defined

Previously a program could switch to a compat mode segment and then
execute SYSCALL and it would jump to an uninitialized MSR and crash
the kernel.

Instead supply a dummy target for this case.

Pointed out by Jan Beulich

Cc: jbeulich@novell.com
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>