[PATCH 08/15] s390x: protvirt: KVM intercept changes

[Janosch Frank]

Secure guests no longer intercept with code 4 for an instruction
interception. Instead they have codes 104 and 108 for secure
instruction interception and secure instruction notification
respectively.

The 104 mirrors the 4, but the 108 is a notification, that something
happened and the hypervisor might need to adjust its tracking data to
that fact. An example for that is the set prefix notification
interception, where KVM only reads the new prefix, but does not update
the prefix in the state description.

Signed-off-by: Janosch Frank <address@hidden>
---
 target/s390x/kvm.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c
index 418154ccfe..58251c0229 100644
--- a/target/s390x/kvm.c
+++ b/target/s390x/kvm.c
@@ -115,6 +115,8 @@
 #define ICPT_CPU_STOP                   0x28
 #define ICPT_OPEREXC                    0x2c
 #define ICPT_IO                         0x40
+#define ICPT_PV_INSTR                   0x68
+#define ICPT_PV_INSTR_NOT               0x6c
 
 #define NR_LOCAL_IRQS 32
 /*
@@ -151,6 +153,7 @@ static int cap_s390_irq;
 static int cap_ri;
 static int cap_gs;
 static int cap_hpage_1m;
+static int cap_protvirt;
 
 static int active_cmma;
 
@@ -336,6 +339,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
     cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF);
     cap_mem_op = kvm_check_extension(s, KVM_CAP_S390_MEM_OP);
     cap_s390_irq = kvm_check_extension(s, KVM_CAP_S390_INJECT_IRQ);
+    cap_protvirt = kvm_check_extension(s, KVM_CAP_S390_PROTECTED);
 
     if (!kvm_check_extension(s, KVM_CAP_S390_GMAP)
         || !kvm_check_extension(s, KVM_CAP_S390_COW)) {
@@ -1664,6 +1668,8 @@ static int handle_intercept(S390CPU *cpu)
             (long)cs->kvm_run->psw_addr);
     switch (icpt_code) {
         case ICPT_INSTRUCTION:
+        case ICPT_PV_INSTR:
+        case ICPT_PV_INSTR_NOT:
             r = handle_instruction(cpu, run);
             break;
         case ICPT_PROGRAM:
-- 
2.20.1