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-rw-r--r--arch/x86/kernel/smpboot.c2
-rw-r--r--drivers/acpi/acpica/hwsleep.c3
-rw-r--r--kernel/cpu.c7
3 files changed, 11 insertions, 1 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 2fecda69ee64..61cc40887c48 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -62,6 +62,7 @@
#include <asm/vmi.h>
#include <asm/apic.h>
#include <asm/setup.h>
+#include <asm/tboot.h>
#include <asm/uv/uv.h>
#include <linux/mc146818rtc.h>
@@ -1317,6 +1318,7 @@ void play_dead_common(void)
void native_play_dead(void)
{
play_dead_common();
+ tboot_shutdown(TB_SHUTDOWN_WFS);
wbinvd_halt();
}
diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
index db307a356f08..8c01dd3724e0 100644
--- a/drivers/acpi/acpica/hwsleep.c
+++ b/drivers/acpi/acpica/hwsleep.c
@@ -45,6 +45,7 @@
#include <acpi/acpi.h>
#include "accommon.h"
#include "actables.h"
+#include <asm/tboot.h>
#define _COMPONENT ACPI_HARDWARE
ACPI_MODULE_NAME("hwsleep")
@@ -342,6 +343,8 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state)
ACPI_FLUSH_CPU_CACHE();
+ tboot_sleep(sleep_state, pm1a_control, pm1b_control);
+
/* Write #2: Write both SLP_TYP + SLP_EN */
status = acpi_hw_write_pm1_control(pm1a_control, pm1b_control);
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 8ce10043e4ac..ff071e022a85 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -14,6 +14,7 @@
#include <linux/kthread.h>
#include <linux/stop_machine.h>
#include <linux/mutex.h>
+#include <asm/tboot.h>
#ifdef CONFIG_SMP
/* Serializes the updates to cpu_online_mask, cpu_present_mask */
@@ -376,7 +377,7 @@ static cpumask_var_t frozen_cpus;
int disable_nonboot_cpus(void)
{
- int cpu, first_cpu, error;
+ int cpu, first_cpu, error, num_cpus = 0;
error = stop_machine_create();
if (error)
@@ -391,6 +392,7 @@ int disable_nonboot_cpus(void)
for_each_online_cpu(cpu) {
if (cpu == first_cpu)
continue;
+ num_cpus++;
error = _cpu_down(cpu, 1);
if (!error) {
cpumask_set_cpu(cpu, frozen_cpus);
@@ -401,6 +403,9 @@ int disable_nonboot_cpus(void)
break;
}
}
+ /* ensure all CPUs have gone into wait-for-SIPI */
+ error |= tboot_wait_for_aps(num_cpus);
+
if (!error) {
BUG_ON(num_online_cpus() > 1);
/* Make sure the CPUs won't be enabled by someone else */