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s390/kvm: Add check for priviledged SCLP handler

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The SCLP instruction is priviledged, so we should make sure that
we generate an exception when it is called from the problem state.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Thomas Huth 2013-07-29 15:49:16 +02:00 committed by Christian Borntraeger
parent 6c2679fc19
commit 3ac85fb666
1 changed files with 4 additions and 0 deletions
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target-s390x/kvm.c
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@ -439,6 +439,10 @@ static int kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run,
int r = 0; int r = 0;
cpu_synchronize_state(CPU(cpu)); cpu_synchronize_state(CPU(cpu));
if (env->psw.mask & PSW_MASK_PSTATE) {
enter_pgmcheck(cpu, PGM_PRIVILEGED);
return 0;
}
sccb = env->regs[ipbh0 & 0xf]; sccb = env->regs[ipbh0 & 0xf];
code = env->regs[(ipbh0 & 0xf0) >> 4]; code = env->regs[(ipbh0 & 0xf0) >> 4];