diff options
| -rw-r--r-- | target/s390x/misc_helper.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/target/s390x/misc_helper.c b/target/s390x/misc_helper.c index 83d38944d7..eca82441d0 100644 --- a/target/s390x/misc_helper.c +++ b/target/s390x/misc_helper.c @@ -288,7 +288,9 @@ void HELPER(diag)(CPUS390XState *env, uint32_t r1, uint32_t r3, uint32_t num) switch (num) { case 0x500: /* KVM hypercall */ + qemu_mutex_lock_iothread(); r = s390_virtio_hypercall(env); + qemu_mutex_unlock_iothread(); break; case 0x44: /* yield */ |