From 3506229ff9968e5dbc862a50285fbea0e8821b58 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Sat, 5 Nov 2005 17:25:54 +0100 Subject: [PATCH] x86_64: Don't enable interrupt unconditionally in reboot path When they were disabled before (e.g. after a panic) it's better to keep them off, otherwise followon panics can happen from timer interrupt handlers etc. Drawback is that pageup in the console won't work anymore though. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- arch/x86_64/kernel/reboot.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'arch/x86_64/kernel/reboot.c') diff --git a/arch/x86_64/kernel/reboot.c b/arch/x86_64/kernel/reboot.c index 47f95687905..97804bc2c0a 100644 --- a/arch/x86_64/kernel/reboot.c +++ b/arch/x86_64/kernel/reboot.c @@ -77,6 +77,7 @@ static inline void kb_wait(void) void machine_shutdown(void) { + unsigned long flags; /* Stop the cpus and apics */ #ifdef CONFIG_SMP int reboot_cpu_id; @@ -98,7 +99,7 @@ void machine_shutdown(void) smp_send_stop(); #endif - local_irq_disable(); + local_irq_save(flags); #ifndef CONFIG_SMP disable_local_APIC(); @@ -106,7 +107,7 @@ void machine_shutdown(void) disable_IO_APIC(); - local_irq_enable(); + local_irq_restore(flags); } void machine_emergency_restart(void) -- cgit v1.2.3