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KVM: s390: read the correct opcode on SIE faults 

Let's use our fresh new function read_guest_instr() to access
guest storage via the correct addressing schema.

Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
hifive-unleashed-5.1
David Hildenbrand 2015-11-16 16:17:45 +01:00 committed by Christian Borntraeger
parent 34346b9a93
commit 6597732275
1 changed files with 1 additions and 2 deletions
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3
arch/s390/kvm/kvm-s390.c
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@ -2163,7 +2163,6 @@ static int vcpu_pre_run(struct kvm_vcpu *vcpu)
static int vcpu_post_run_fault_in_sie(struct kvm_vcpu *vcpu)
{
psw_t *psw = &vcpu->arch.sie_block->gpsw;
u8 opcode;
int rc;
@ -2178,7 +2177,7 @@ static int vcpu_post_run_fault_in_sie(struct kvm_vcpu *vcpu)
* to look up the current opcode to get the length of the instruction
* to be able to forward the PSW.
*/
rc = read_guest(vcpu, psw->addr, 0, &opcode, 1);
rc = read_guest_instr(vcpu, &opcode, 1);
if (rc)
return kvm_s390_inject_prog_cond(vcpu, rc);
kvm_s390_forward_psw(vcpu, insn_length(opcode));