[PATCH v4 02/15] KVM: s390: wrapper for KVM_BUG

Claudio Imbrenda
2025-01-23T14:46:38Z

Wrap the call to KVM_BUG; this reduces code duplication and improves
readability.

Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Reviewed-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
---
arch/s390/kvm/kvm-s390.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index d8080c27d45b..ecbdd7d41230 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -4766,6 +4766,13 @@ static int vcpu_post_run_addressing_exception(struct kvm_vcpu *vcpu)
return kvm_s390_inject_prog_irq(vcpu, &pgm_info);
}

+static void kvm_s390_assert_primary_as(struct kvm_vcpu *vcpu)
+{
+ KVM_BUG(current->thread.gmap_teid.as != PSW_BITS_AS_PRIMARY, vcpu->kvm,
+ "Unexpected program interrupt 0x%x, TEID 0x%016lx",
+ current->thread.gmap_int_code, current->thread.gmap_teid.val);
+}
+
static int vcpu_post_run_handle_fault(struct kvm_vcpu *vcpu)
{
unsigned int flags = 0;
@@ -4781,9 +4788,7 @@ static int vcpu_post_run_handle_fault(struct kvm_vcpu *vcpu)
vcpu->stat.exit_null++;
break;
case PGM_NON_SECURE_STORAGE_ACCESS:
- KVM_BUG(current->thread.gmap_teid.as != PSW_BITS_AS_PRIMARY, vcpu->kvm,
- "Unexpected program interrupt 0x%x, TEID 0x%016lx",
- current->thread.gmap_int_code, current->thread.gmap_teid.val);
+ kvm_s390_assert_primary_as(vcpu);
/*
* This is normal operation; a page belonging to a protected
* guest has not been imported yet. Try to import the page into
@@ -4794,9 +4799,7 @@ static int vcpu_post_run_handle_fault(struct kvm_vcpu *vcpu)
break;
case PGM_SECURE_STORAGE_ACCESS:
case PGM_SECURE_STORAGE_VIOLATION:
- KVM_BUG(current->thread.gmap_teid.as != PSW_BITS_AS_PRIMARY, vcpu->kvm,
- "Unexpected program interrupt 0x%x, TEID 0x%016lx",
- current->thread.gmap_int_code, current->thread.gmap_teid.val);
+ kvm_s390_assert_primary_as(vcpu);
/*
* This can happen after a reboot with asynchronous teardown;
* the new guest (normal or protected) will run on top of the
@@ -4825,9 +4828,7 @@ static int vcpu_post_run_handle_fault(struct kvm_vcpu *vcpu)
case PGM_REGION_FIRST_TRANS:
case PGM_REGION_SECOND_TRANS:
case PGM_REGION_THIRD_TRANS:
- KVM_BUG(current->thread.gmap_teid.as != PSW_BITS_AS_PRIMARY, vcpu->kvm,
- "Unexpected program interrupt 0x%x, TEID 0x%016lx",
- current->thread.gmap_int_code, current->thread.gmap_teid.val);
+ kvm_s390_assert_primary_as(vcpu);
if (vcpu->arch.gmap->pfault_enabled) {
rc = gmap_fault(vcpu->arch.gmap, gaddr, flags | FAULT_FLAG_RETRY_NOWAIT);
if (rc == -EFAULT)
--
2.48.1