KVM: s390: add debug logging for cpu model subfunctions

As userspace can now get/set the subfunctions we want to trace those.
This will allow to also check QEMUs cpu model vs. what the real
hardware provides.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Janosch Frank <frankja@linux.vnet.ibm.com>

1 files changed, 136 insertions, 0 deletions

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 82a95afa6629..4638303ba6a8 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -1279,6 +1279,51 @@ static int kvm_s390_set_processor_subfunc(struct kvm *kvm,
         }
         mutex_unlock(&kvm->lock);
 
+        VM_EVENT(kvm, 3, "SET: guest PLO    subfunc 0x%16.16lx.%16.16lx.%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.plo)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.plo)[1],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.plo)[2],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.plo)[3]);
+        VM_EVENT(kvm, 3, "SET: guest PTFF   subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.ptff)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.ptff)[1]);
+        VM_EVENT(kvm, 3, "SET: guest KMAC   subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmac)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmac)[1]);
+        VM_EVENT(kvm, 3, "SET: guest KMC    subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmc)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmc)[1]);
+        VM_EVENT(kvm, 3, "SET: guest KM     subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.km)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.km)[1]);
+        VM_EVENT(kvm, 3, "SET: guest KIMD   subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kimd)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kimd)[1]);
+        VM_EVENT(kvm, 3, "SET: guest KLMD   subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.klmd)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.klmd)[1]);
+        VM_EVENT(kvm, 3, "SET: guest PCKMO  subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.pckmo)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.pckmo)[1]);
+        VM_EVENT(kvm, 3, "SET: guest KMCTR  subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmctr)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmctr)[1]);
+        VM_EVENT(kvm, 3, "SET: guest KMF    subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmf)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmf)[1]);
+        VM_EVENT(kvm, 3, "SET: guest KMO    subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmo)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmo)[1]);
+        VM_EVENT(kvm, 3, "SET: guest PCC    subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.pcc)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.pcc)[1]);
+        VM_EVENT(kvm, 3, "SET: guest PPNO   subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.ppno)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.ppno)[1]);
+        VM_EVENT(kvm, 3, "SET: guest KMA    subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kma)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kma)[1]);
+
         return 0;
 }
 
@@ -1402,6 +1447,51 @@ static int kvm_s390_get_processor_subfunc(struct kvm *kvm,
             sizeof(struct kvm_s390_vm_cpu_subfunc)))
                 return -EFAULT;
 
+        VM_EVENT(kvm, 3, "GET: guest PLO    subfunc 0x%16.16lx.%16.16lx.%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.plo)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.plo)[1],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.plo)[2],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.plo)[3]);
+        VM_EVENT(kvm, 3, "GET: guest PTFF   subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.ptff)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.ptff)[1]);
+        VM_EVENT(kvm, 3, "GET: guest KMAC   subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmac)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmac)[1]);
+        VM_EVENT(kvm, 3, "GET: guest KMC    subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmc)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmc)[1]);
+        VM_EVENT(kvm, 3, "GET: guest KM     subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.km)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.km)[1]);
+        VM_EVENT(kvm, 3, "GET: guest KIMD   subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kimd)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kimd)[1]);
+        VM_EVENT(kvm, 3, "GET: guest KLMD   subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.klmd)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.klmd)[1]);
+        VM_EVENT(kvm, 3, "GET: guest PCKMO  subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.pckmo)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.pckmo)[1]);
+        VM_EVENT(kvm, 3, "GET: guest KMCTR  subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmctr)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmctr)[1]);
+        VM_EVENT(kvm, 3, "GET: guest KMF    subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmf)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmf)[1]);
+        VM_EVENT(kvm, 3, "GET: guest KMO    subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmo)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kmo)[1]);
+        VM_EVENT(kvm, 3, "GET: guest PCC    subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.pcc)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.pcc)[1]);
+        VM_EVENT(kvm, 3, "GET: guest PPNO   subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.ppno)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.ppno)[1]);
+        VM_EVENT(kvm, 3, "GET: guest KMA    subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kma)[0],
+                 ((unsigned long *) &kvm->arch.model.subfuncs.kma)[1]);
+
         return 0;
 }
 
@@ -1411,6 +1501,52 @@ static int kvm_s390_get_machine_subfunc(struct kvm *kvm,
         if (copy_to_user((void __user *)attr->addr, &kvm_s390_available_subfunc,
             sizeof(struct kvm_s390_vm_cpu_subfunc)))
                 return -EFAULT;
+
+        VM_EVENT(kvm, 3, "GET: host  PLO    subfunc 0x%16.16lx.%16.16lx.%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm_s390_available_subfunc.plo)[0],
+                 ((unsigned long *) &kvm_s390_available_subfunc.plo)[1],
+                 ((unsigned long *) &kvm_s390_available_subfunc.plo)[2],
+                 ((unsigned long *) &kvm_s390_available_subfunc.plo)[3]);
+        VM_EVENT(kvm, 3, "GET: host  PTFF   subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm_s390_available_subfunc.ptff)[0],
+                 ((unsigned long *) &kvm_s390_available_subfunc.ptff)[1]);
+        VM_EVENT(kvm, 3, "GET: host  KMAC   subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm_s390_available_subfunc.kmac)[0],
+                 ((unsigned long *) &kvm_s390_available_subfunc.kmac)[1]);
+        VM_EVENT(kvm, 3, "GET: host  KMC    subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm_s390_available_subfunc.kmc)[0],
+                 ((unsigned long *) &kvm_s390_available_subfunc.kmc)[1]);
+        VM_EVENT(kvm, 3, "GET: host  KM     subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm_s390_available_subfunc.km)[0],
+                 ((unsigned long *) &kvm_s390_available_subfunc.km)[1]);
+        VM_EVENT(kvm, 3, "GET: host  KIMD   subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm_s390_available_subfunc.kimd)[0],
+                 ((unsigned long *) &kvm_s390_available_subfunc.kimd)[1]);
+        VM_EVENT(kvm, 3, "GET: host  KLMD   subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm_s390_available_subfunc.klmd)[0],
+                 ((unsigned long *) &kvm_s390_available_subfunc.klmd)[1]);
+        VM_EVENT(kvm, 3, "GET: host  PCKMO  subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm_s390_available_subfunc.pckmo)[0],
+                 ((unsigned long *) &kvm_s390_available_subfunc.pckmo)[1]);
+        VM_EVENT(kvm, 3, "GET: host  KMCTR  subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm_s390_available_subfunc.kmctr)[0],
+                 ((unsigned long *) &kvm_s390_available_subfunc.kmctr)[1]);
+        VM_EVENT(kvm, 3, "GET: host  KMF    subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm_s390_available_subfunc.kmf)[0],
+                 ((unsigned long *) &kvm_s390_available_subfunc.kmf)[1]);
+        VM_EVENT(kvm, 3, "GET: host  KMO    subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm_s390_available_subfunc.kmo)[0],
+                 ((unsigned long *) &kvm_s390_available_subfunc.kmo)[1]);
+        VM_EVENT(kvm, 3, "GET: host  PCC    subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm_s390_available_subfunc.pcc)[0],
+                 ((unsigned long *) &kvm_s390_available_subfunc.pcc)[1]);
+        VM_EVENT(kvm, 3, "GET: host  PPNO   subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm_s390_available_subfunc.ppno)[0],
+                 ((unsigned long *) &kvm_s390_available_subfunc.ppno)[1]);
+        VM_EVENT(kvm, 3, "GET: host  KMA    subfunc 0x%16.16lx.%16.16lx",
+                 ((unsigned long *) &kvm_s390_available_subfunc.kma)[0],
+                 ((unsigned long *) &kvm_s390_available_subfunc.kma)[1]);
+
         return 0;
 }