KVM: PPC: Expose fixup hcall capability

New kvm versions expose a PPC_FIXUP_HCALL capability. Make it visible to
machine code so we can take decisions based on it.
Signed-off-by: NAlexander Graf <agraf@suse.de>

target-ppc/kvm.c

@@ -69,6 +69,7 @@ static int cap_epr;
 static int cap_ppc_watchdog;
 static int cap_papr;
 static int cap_htab_fd;
+static int cap_fixup_hcalls;
 
 /* XXX We have a race condition where we actually have a level triggered
  *     interrupt, but the infrastructure can't expose that yet, so the guest
@@ -107,6 +108,7 @@ int kvm_arch_init(KVMState *s)
     /* Note: we don't set cap_papr here, because this capability is
      * only activated after this by kvmppc_set_papr() */
     cap_htab_fd = kvm_check_extension(s, KVM_CAP_PPC_HTAB_FD);
+    cap_fixup_hcalls = kvm_check_extension(s, KVM_CAP_PPC_FIXUP_HCALL);
 
     if (!cap_interrupt_level) {
         fprintf(stderr, "KVM: Couldn't find level irq capability. Expect the "
@@ -1780,6 +1782,11 @@ bool kvmppc_has_cap_htab_fd(void)
     return cap_htab_fd;
 }
 
+bool kvmppc_has_cap_fixup_hcalls(void)
+{
+    return cap_fixup_hcalls;
+}
+
 static PowerPCCPUClass *ppc_cpu_get_family_class(PowerPCCPUClass *pcc)
 {
     ObjectClass *oc = OBJECT_CLASS(pcc);

target-ppc/kvm_ppc.h

@@ -50,6 +50,7 @@ void kvmppc_hash64_free_pteg(uint64_t token);
 
 void kvmppc_hash64_write_pte(CPUPPCState *env, target_ulong pte_index,
                              target_ulong pte0, target_ulong pte1);
+bool kvmppc_has_cap_fixup_hcalls(void);
 
 #else
 
@@ -223,6 +224,11 @@ static inline void kvmppc_hash64_write_pte(CPUPPCState *env,
     abort();
 }
 
+static inline bool kvmppc_has_cap_fixup_hcalls(void)
+{
+    abort();
+}
+
 #endif
 
 #ifndef CONFIG_KVM