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-rw-r--r--arch/i386/kernel/cpu/mtrr/main.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/i386/kernel/cpu/mtrr/main.c b/arch/i386/kernel/cpu/mtrr/main.c
index 0acfb6a5a220..02a2f39e5e0a 100644
--- a/arch/i386/kernel/cpu/mtrr/main.c
+++ b/arch/i386/kernel/cpu/mtrr/main.c
@@ -729,6 +729,17 @@ void mtrr_ap_init(void)
local_irq_restore(flags);
}
+/**
+ * Save current fixed-range MTRR state of the BSP
+ */
+void mtrr_save_state(void)
+{
+ if (smp_processor_id() == 0)
+ mtrr_save_fixed_ranges(NULL);
+ else
+ smp_call_function_single(0, mtrr_save_fixed_ranges, NULL, 1, 1);
+}
+
static int __init mtrr_init_finialize(void)
{
if (!mtrr_if)