diff options
Diffstat (limited to 'include/qemu/rcu.h')
| -rw-r--r-- | include/qemu/rcu.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/qemu/rcu.h b/include/qemu/rcu.h index 313fc414bc..661c1a1468 100644 --- a/include/qemu/rcu.h +++ b/include/qemu/rcu.h @@ -87,7 +87,10 @@ static inline void rcu_read_lock(void) ctr = qatomic_read(&rcu_gp_ctr); qatomic_set(&p_rcu_reader->ctr, ctr); - /* Write p_rcu_reader->ctr before reading RCU-protected pointers. */ + /* + * Read rcu_gp_ptr and write p_rcu_reader->ctr before reading + * RCU-protected pointers. + */ smp_mb_placeholder(); } |