diff options
| author | Thomas Huth <thuth@linux.vnet.ibm.com> | 2014-01-22 17:02:46 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2014-02-27 09:51:25 +0100 |
| commit | 0788082a4b3f41cb453b654d1a66f87adfa794a9 (patch) | |
| tree | efc8c4354400713c6edc063d308c2915d8cd315b | |
| parent | 819bd3091e986c1b6b10203a7138a53b849a53e0 (diff) | |
s390x/kvm: Fixed bad SIGP SET-ARCHITECTURE handler
The SET-ARCHITECTURE handler in QEMU caused a program interruption.
This is wrong according to the "Principles of Operations" specification
(since SIGP should never cause a program interrupt) and was likely only
introduced for debugging purposes. Since we handle SET-ARCHITECTURE in
the kernel already and only dropped to user space in case of bad mode
parameters, we should just report INVALID PARAMETER in QEMU instead.
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| -rw-r--r-- | target-s390x/kvm.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c index 9430a35b02..b93fe84121 100644 --- a/target-s390x/kvm.c +++ b/target-s390x/kvm.c @@ -676,8 +676,10 @@ static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1) cc = kvm_s390_cpu_restart(target_cpu); break; case SIGP_SET_ARCH: - /* make the caller panic */ - return -1; + *statusreg &= 0xffffffff00000000UL; + *statusreg |= SIGP_STAT_INVALID_PARAMETER; + cc = 1; /* status stored */ + break; case SIGP_INITIAL_CPU_RESET: cc = s390_cpu_initial_reset(target_cpu); break; |