From 90e9f53662826db3cdd6d99bd394d727b05160c1 Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Mon, 17 Mar 2008 16:37:12 -0700 Subject: [PATCH] xen: make sure iret faults are trapped Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- arch/x86/kernel/entry_32.S | 2 +- arch/x86/xen/xen-asm.S | 6 +++++- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index f0f8934fc30..568c6ccd7ae 100644 --- a/arch/x86/kernel/entry_32.S +++ b/arch/x86/kernel/entry_32.S @@ -409,7 +409,7 @@ restore_nocheck_notrace: irq_return: INTERRUPT_RETURN .section .fixup,"ax" -iret_exc: +ENTRY(iret_exc) pushl $0 # no error code pushl $do_iret_error jmp error_code diff --git a/arch/x86/xen/xen-asm.S b/arch/x86/xen/xen-asm.S index fe161ed4b01..99223cc323b 100644 --- a/arch/x86/xen/xen-asm.S +++ b/arch/x86/xen/xen-asm.S @@ -184,8 +184,12 @@ iret_restore_end: region is OK. */ je xen_hypervisor_callback - iret +1: iret xen_iret_end_crit: +.section __ex_table,"a" + .align 4 + .long 1b,iret_exc +.previous hyper_iret: /* put this out of line since its very rarely used */ -- 2.41.1