[Qemu-devel] [PATCH RFC 5/7] s390x/pci: fence off instructions for non-pci

[Cornelia Huck]

If a guest running on a non-pci build issues a pci instruction,
throw them an exception.

Signed-off-by: Cornelia Huck <coh...@redhat.com>
---
 target/s390x/kvm.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c
index a3d00196f4..c5c7c27a21 100644
--- a/target/s390x/kvm.c
+++ b/target/s390x/kvm.c
@@ -1160,6 +1160,9 @@ static int kvm_clp_service_call(S390CPU *cpu, struct 
kvm_run *run)
 {
     uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
 
+#ifndef CONFIG_PCI
+    return -1;
+#endif
     return clp_service_call(cpu, r2);
 }
 
@@ -1168,6 +1171,9 @@ static int kvm_pcilg_service_call(S390CPU *cpu, struct 
kvm_run *run)
     uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
     uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
 
+#ifndef CONFIG_PCI
+    return -1;
+#endif
     return pcilg_service_call(cpu, r1, r2);
 }
 
@@ -1176,6 +1182,9 @@ static int kvm_pcistg_service_call(S390CPU *cpu, struct 
kvm_run *run)
     uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
     uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
 
+#ifndef CONFIG_PCI
+    return -1;
+#endif
     return pcistg_service_call(cpu, r1, r2);
 }
 
@@ -1188,11 +1197,17 @@ static int kvm_stpcifc_service_call(S390CPU *cpu, 
struct kvm_run *run)
     cpu_synchronize_state(CPU(cpu));
     fiba = get_base_disp_rxy(cpu, run, &ar);
 
+#ifndef CONFIG_PCI
+    return -1;
+#endif
     return stpcifc_service_call(cpu, r1, fiba, ar);
 }
 
 static int kvm_sic_service_call(S390CPU *cpu, struct kvm_run *run)
 {
+#ifndef CONFIG_PCI
+    return -1;
+#endif
     /* NOOP */
     return 0;
 }
@@ -1202,6 +1217,9 @@ static int kvm_rpcit_service_call(S390CPU *cpu, struct 
kvm_run *run)
     uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
     uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
 
+#ifndef CONFIG_PCI
+    return -1;
+#endif
     return rpcit_service_call(cpu, r1, r2);
 }
 
@@ -1212,6 +1230,9 @@ static int kvm_pcistb_service_call(S390CPU *cpu, struct 
kvm_run *run)
     uint64_t gaddr;
     uint8_t ar;
 
+#ifndef CONFIG_PCI
+    return -1;
+#endif
     cpu_synchronize_state(CPU(cpu));
     gaddr = get_base_disp_rsy(cpu, run, &ar);
 
@@ -1224,6 +1245,9 @@ static int kvm_mpcifc_service_call(S390CPU *cpu, struct 
kvm_run *run)
     uint64_t fiba;
     uint8_t ar;
 
+#ifndef CONFIG_PCI
+    return -1;
+#endif
     cpu_synchronize_state(CPU(cpu));
     fiba = get_base_disp_rxy(cpu, run, &ar);
 
-- 
2.13.0