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authorLinus Torvalds <torvalds@linux-foundation.org>2013-11-12 10:37:53 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-12 10:37:53 +0900
commitb7ab6e3d21b17a5b488aeb49bd415a9433b8a79e (patch)
tree172324cee4eb8f53fa0f949a337ed3c43c5acdbd
parent87093826aa0172d9135ca1f301c4298a258ceee6 (diff)
parent522e66464467543c0d88d023336eec4df03ad40b (diff)
Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/apic fix from Ingo Molnar: "A single fix to the IO-APIC / local-APIC shutdown sequence" * 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/apic: Disable I/O APIC before shutdown of the local APIC
-rw-r--r--arch/x86/kernel/crash.c2
-rw-r--r--arch/x86/kernel/reboot.c8
2 files changed, 5 insertions, 5 deletions
diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c
index e0e0841eef4..18677a90d6a 100644
--- a/arch/x86/kernel/crash.c
+++ b/arch/x86/kernel/crash.c
@@ -127,12 +127,12 @@ void native_machine_crash_shutdown(struct pt_regs *regs)
cpu_emergency_vmxoff();
cpu_emergency_svm_disable();
- lapic_shutdown();
#ifdef CONFIG_X86_IO_APIC
/* Prevent crash_kexec() from deadlocking on ioapic_lock. */
ioapic_zap_locks();
disable_IO_APIC();
#endif
+ lapic_shutdown();
#ifdef CONFIG_HPET_TIMER
hpet_disable();
#endif
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 7e920bff99a..618ce264b23 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -550,6 +550,10 @@ static void native_machine_emergency_restart(void)
void native_machine_shutdown(void)
{
/* Stop the cpus and apics */
+#ifdef CONFIG_X86_IO_APIC
+ disable_IO_APIC();
+#endif
+
#ifdef CONFIG_SMP
/*
* Stop all of the others. Also disable the local irq to
@@ -562,10 +566,6 @@ void native_machine_shutdown(void)
lapic_shutdown();
-#ifdef CONFIG_X86_IO_APIC
- disable_IO_APIC();
-#endif
-
#ifdef CONFIG_HPET_TIMER
hpet_disable();
#endif