diff options
Diffstat (limited to 'arch/s390/kvm/guestdbg.c')
| -rw-r--r-- | arch/s390/kvm/guestdbg.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/arch/s390/kvm/guestdbg.c b/arch/s390/kvm/guestdbg.c index e8c6843b9600..31a05330d11c 100644 --- a/arch/s390/kvm/guestdbg.c +++ b/arch/s390/kvm/guestdbg.c @@ -439,6 +439,23 @@ exit_required: #define guest_per_enabled(vcpu) \ (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PER) +int kvm_s390_handle_per_ifetch_icpt(struct kvm_vcpu *vcpu) +{ + const u8 ilen = kvm_s390_get_ilen(vcpu); + struct kvm_s390_pgm_info pgm_info = { + .code = PGM_PER, + .per_code = PER_EVENT_IFETCH >> 24, + .per_address = __rewind_psw(vcpu->arch.sie_block->gpsw, ilen), + }; + + /* + * The PSW points to the next instruction, therefore the intercepted + * instruction generated a PER i-fetch event. PER address therefore + * points at the previous PSW address (could be an EXECUTE function). + */ + return kvm_s390_inject_prog_irq(vcpu, &pgm_info); +} + static void filter_guest_per_event(struct kvm_vcpu *vcpu) { u32 perc = vcpu->arch.sie_block->perc << 24; @@ -465,7 +482,7 @@ static void filter_guest_per_event(struct kvm_vcpu *vcpu) guest_perc &= ~PER_EVENT_IFETCH; /* All other PER events will be given to the guest */ - /* TODO: Check alterated address/address space */ + /* TODO: Check altered address/address space */ vcpu->arch.sie_block->perc = guest_perc >> 24; |