diff options
| -rw-r--r-- | xen/arch/x86/acpi/power.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/xen/arch/x86/acpi/power.c b/xen/arch/x86/acpi/power.c index dfe35468ac..e6847b3e4f 100644 --- a/xen/arch/x86/acpi/power.c +++ b/xen/arch/x86/acpi/power.c @@ -147,6 +147,7 @@ static int enter_state(u32 state) { unsigned long flags; int error; + unsigned long cr4; if ( (state <= ACPI_STATE_S0) || (state > ACPI_S_STATES_MAX) ) return -EINVAL; @@ -201,13 +202,15 @@ static int enter_state(u32 state) } /* Restore CR4 and EFER from cached values. */ - write_cr4(read_cr4()); + cr4 = read_cr4(); + write_cr4(cr4 & ~X86_CR4_MCE); if ( cpu_has_efer ) write_efer(read_efer()); device_power_up(); mcheck_init(&boot_cpu_data); + write_cr4(cr4); printk(XENLOG_INFO "Finishing wakeup from ACPI S%d state.\n", state); |