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s390x/kvm: Fix opcode decoding for eb instruction handler

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The second byte of the opcode is encoded in the lowest byte of the ipb
field, not the lowest byte of the ipa field.

Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
This commit is contained in:
Frank Blaschka 2014-10-18 06:24:12 +02:00 committed by Cornelia Huck
parent 6e76d125f2
commit 80765f0734
1 changed files with 4 additions and 4 deletions
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8
target-s390x/kvm.c
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@ -827,18 +827,18 @@ static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
return r;
}
static int handle_eb(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
static int handle_eb(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
{
int r = 0;
switch (ipa1) {
switch (ipbl) {
case PRIV_EB_SQBS:
/* just inject exception */
r = -1;
break;
default:
r = -1;
DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipa1);
DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl);
break;
}
@ -1039,7 +1039,7 @@ static int handle_instruction(S390CPU *cpu, struct kvm_run *run)
r = handle_b9(cpu, run, ipa1);
break;
case IPA0_EB:
r = handle_eb(cpu, run, ipa1);
r = handle_eb(cpu, run, run->s390_sieic.ipb & 0xff);
break;
case IPA0_DIAG:
r = handle_diag(cpu, run, run->s390_sieic.ipb);