Commit 2dc1697e authored Jul 21, 2008 by Jeremy Fitzhardinge Committed by Ingo Molnar Jul 24, 2008

xen: don't use sysret for sysexit32

When implementing sysexit32, don't let Xen use sysret to return to
userspace.  That results in usermode register state being trashed.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 9e882c92

arch/x86/xen/xen-asm_64.S

+1 −1

Original line number	Diff line number	Diff line
		@@ -173,7 +173,7 @@ ENTRY(xen_sysexit)
		pushq $__USER32_CS
		pushq %rdx

		pushq $VGCF_in_syscall
		pushq $0
		1: jmp hypercall_iret
		ENDPATCH(xen_sysexit)
		RELOC(xen_sysexit, 1b+1)