From bf661987da6f5131475dfe3f51a98de4e2589ed3 Mon Sep 17 00:00:00 2001 From: "mao, bibo" Date: Thu, 27 Apr 2006 18:39:44 -0700 Subject: [PATCH] kprobe cleanup for VM_MASK judgement When trap happens in user space, kprobe_exceptions_notify() funtion will skip it. This patch deletes some unnecessary code for VM_MASK judgement in eflags. Signed-off-by: bibo, mao Cc: Masami Hiramatsu Cc: Ananth N Mavinakayanahalli Acked-by: "Keshavamurthy, Anil S" Acked-by: Prasanna S Panchamukhi Cc: Jim Keniston Cc: Yumiko Sugita Cc: Satoshi Oshima Cc: Hideo Aoki Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/i386/kernel/kprobes.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/arch/i386/kernel/kprobes.c b/arch/i386/kernel/kprobes.c index 043f5292e70..6c93ddf0951 100644 --- a/arch/i386/kernel/kprobes.c +++ b/arch/i386/kernel/kprobes.c @@ -242,10 +242,6 @@ static int __kprobes kprobe_handler(struct pt_regs *regs) kcb->kprobe_status = KPROBE_REENTER; return 1; } else { - if (regs->eflags & VM_MASK) { - /* We are in virtual-8086 mode. Return 0 */ - goto no_kprobe; - } if (*addr != BREAKPOINT_INSTRUCTION) { /* The breakpoint instruction was removed by * another cpu right after we hit, no further @@ -265,11 +261,6 @@ static int __kprobes kprobe_handler(struct pt_regs *regs) p = get_kprobe(addr); if (!p) { - if (regs->eflags & VM_MASK) { - /* We are in virtual-8086 mode. Return 0 */ - goto no_kprobe; - } - if (*addr != BREAKPOINT_INSTRUCTION) { /* * The breakpoint instruction was removed right -- cgit v1.2.3