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-rw-r--r--src/cpu/intel/microcode/microcode.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/cpu/intel/microcode/microcode.c b/src/cpu/intel/microcode/microcode.c
index ae1c26a4b5..ec42fb91d7 100644
--- a/src/cpu/intel/microcode/microcode.c
+++ b/src/cpu/intel/microcode/microcode.c
@@ -63,7 +63,7 @@ static inline u32 read_microcode_rev(void)
"=a" (msr.lo), "=d" (msr.hi)
: /* inputs */
: /* trashed */
- "ecx"
+ "ebx", "ecx"
);
return msr.hi;
}