From: Janosch Frank <frankja@xxxxxxxxxxxxx>
Only two program exceptions can be injected for a protected guest:
specification and operand
Both have a code in offset 248 of the state description, as the lowcore
is not accessible by KVM for such guests.
Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
---
arch/s390/kvm/interrupt.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index a98f1dfde8de..b9c6666818a6 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -829,6 +829,21 @@ static int __must_check __deliver_external_call(struct kvm_vcpu *vcpu)
return rc ? -EFAULT : 0;
}
+static int __deliver_prog_pv(struct kvm_vcpu *vcpu, u16 code)
+{
+ switch (code) {
+ case PGM_SPECIFICATION:
+ vcpu->arch.sie_block->iictl = IICTL_CODE_SPECIFICATION;
+ break;
+ case PGM_OPERAND:
+ vcpu->arch.sie_block->iictl = IICTL_CODE_OPERAND;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
static int __must_check __deliver_prog(struct kvm_vcpu *vcpu)
{
struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
@@ -849,6 +864,9 @@ static int __must_check __deliver_prog(struct kvm_vcpu *vcpu)
trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, KVM_S390_PROGRAM_INT,
pgm_info.code, 0);
+ if (kvm_s390_pv_is_protected(vcpu->kvm))
+ return __deliver_prog_pv(vcpu, pgm_info.code & ~PGM_PER);
+
switch (pgm_info.code & ~PGM_PER) {
case PGM_AFX_TRANSLATION:
case PGM_ASX_TRANSLATION:
--
2.24.0
