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-rw-r--r--src/include/cpu/x86/mp.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/include/cpu/x86/mp.h b/src/include/cpu/x86/mp.h
index f6afc84f35..8331956f8a 100644
--- a/src/include/cpu/x86/mp.h
+++ b/src/include/cpu/x86/mp.h
@@ -121,6 +121,9 @@ int mp_init_with_smm(struct bus *cpu_bus, const struct mp_ops *mp_ops);
* After APs are up and PARALLEL_MP_AP_WORK is enabled one can issue work
* to all the APs to perform. Currently the BSP is the only CPU that is allowed
* to issue work. i.e. the APs should not call any of these functions.
+ *
+ * Input parameter expire_us <= 0 to specify an infinite timeout.
+ *
* All functions return < 0 on error, 0 on success.
*/
int mp_run_on_aps(void (*func)(void), long expire_us);