[PATCH v1 1/1] s390/kvm: mask extra bits from program interrupt code

[Claudio Imbrenda <imbrenda@linux.ibm.com>]

The program interrupt code has some extra bits that are sometimes set
by hardware for various reasons; those bits should be ignored when the
program interrupt number is needed for interrupt handling.

Fixes: ce2b276ebe51 ("s390/mm/fault: Handle guest-related program interrupts in KVM")
Reported-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
---
 arch/s390/kvm/kvm-s390.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 8b3afda99397..f2d1351f6992 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -4737,7 +4737,7 @@ static int vcpu_post_run_handle_fault(struct kvm_vcpu *vcpu)
 	if (kvm_s390_cur_gmap_fault_is_write())
 		flags = FAULT_FLAG_WRITE;
 
-	switch (current->thread.gmap_int_code) {
+	switch (current->thread.gmap_int_code & PGM_INT_CODE_MASK) {
 	case 0:
 		vcpu->stat.exit_null++;
 		break;
-- 
2.47.0