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-rw-r--r--src/include/cpu/x86/mtrr.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/include/cpu/x86/mtrr.h b/src/include/cpu/x86/mtrr.h
index 42964b02ea..6e30199c5f 100644
--- a/src/include/cpu/x86/mtrr.h
+++ b/src/include/cpu/x86/mtrr.h
@@ -30,6 +30,7 @@
#define IA32_SMRR_PHYS_BASE 0x1f2
#define IA32_SMRR_PHYS_MASK 0x1f3
+#define SMRR_PHYS_MASK_LOCK (1 << 10)
/* Specific to model_6fx and model_1067x */
#define MSR_SMRR_PHYS_BASE 0xa0