diff options
| -rw-r--r-- | target/s390x/misc_helper.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/target/s390x/misc_helper.c b/target/s390x/misc_helper.c index 93b0e61366..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 */ @@ -515,7 +517,8 @@ uint32_t HELPER(sigp)(CPUS390XState *env, uint64_t order_code, uint32_t r1, /* Remember: Use "R1 or R1 + 1, whichever is the odd-numbered register" as parameter (input). Status (output) is always R1. */ - switch (order_code) { + /* sigp contains the order code in bit positions 56-63, mask it here. */ + switch (order_code & 0xff) { case SIGP_SET_ARCH: /* switch arch */ break; |