Merge branch 'x86/nmi' into x86/devel

Conflicts:

	arch/x86/kernel/nmi.c
	arch/x86/kernel/nmi_32.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 27 insertions, 1 deletions

diff --git a/arch/x86/kernel/traps_64.c b/arch/x86/kernel/traps_64.c
index ec6d3b2130c4..80ba6d37bfe0 100644
--- a/arch/x86/kernel/traps_64.c
+++ b/arch/x86/kernel/traps_64.c
@@ -75,7 +75,9 @@ asmlinkage void alignment_check(void);
 asmlinkage void machine_check(void);
 asmlinkage void spurious_interrupt_bug(void);
 
+int panic_on_unrecovered_nmi;
 static unsigned int code_bytes = 64;
+static unsigned ignore_nmis;
 
 static inline void conditional_sti(struct pt_regs *regs)
 {
@@ -613,7 +615,9 @@ die_nmi(char *str, struct pt_regs *regs, int do_panic)
          * We are in trouble anyway, lets at least try
          * to get a message out.
          */
-        printk(str, smp_processor_id());
+        printk(KERN_EMERG "%s", str);
+        printk(" on CPU%d, ip %08lx, registers:\n",
+                smp_processor_id(), regs->ip);
         show_registers(regs);
         if (kexec_should_crash(current))
                 crash_kexec(regs);
@@ -862,6 +866,28 @@ asmlinkage notrace  __kprobes void default_do_nmi(struct pt_regs *regs)
                 io_check_error(reason, regs);
 }
 
+asmlinkage notrace __kprobes void
+do_nmi(struct pt_regs *regs, long error_code)
+{
+        nmi_enter();
+        add_pda(__nmi_count, 1);
+        if (!ignore_nmis)
+                default_do_nmi(regs);
+        nmi_exit();
+}
+
+void stop_nmi(void)
+{
+        acpi_nmi_disable();
+        ignore_nmis++;
+}
+
+void restart_nmi(void)
+{
+        ignore_nmis--;
+        acpi_nmi_enable();
+}
+
 /* runs on IST stack. */
 asmlinkage void __kprobes do_int3(struct pt_regs * regs, long error_code)
 {