target/arm: move kvm stubs and remove CONFIG_KVM from kvm_arm.h

Add a forward decl for struct kvm_vcpu_init to avoid pulling all kvm
headers.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20250512180502.2395029-5-pierrick.bouvier@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

target/arm/kvm-stub.c

@@ -22,3 +22,80 @@ bool write_list_to_kvmstate(ARMCPU *cpu, int level)
 {
     g_assert_not_reached();
 }
+
+/*
+ * It's safe to call these functions without KVM support.
+ * They should either do nothing or return "not supported".
+ */
+bool kvm_arm_aarch32_supported(void)
+{
+    return false;
+}
+
+bool kvm_arm_pmu_supported(void)
+{
+    return false;
+}
+
+bool kvm_arm_sve_supported(void)
+{
+    return false;
+}
+
+bool kvm_arm_mte_supported(void)
+{
+    return false;
+}
+
+/*
+ * These functions should never actually be called without KVM support.
+ */
+void kvm_arm_set_cpu_features_from_host(ARMCPU *cpu)
+{
+    g_assert_not_reached();
+}
+
+void kvm_arm_add_vcpu_properties(ARMCPU *cpu)
+{
+    g_assert_not_reached();
+}
+
+int kvm_arm_get_max_vm_ipa_size(MachineState *ms, bool *fixed_ipa)
+{
+    g_assert_not_reached();
+}
+
+int kvm_arm_vgic_probe(void)
+{
+    g_assert_not_reached();
+}
+
+void kvm_arm_pmu_set_irq(ARMCPU *cpu, int irq)
+{
+    g_assert_not_reached();
+}
+
+void kvm_arm_pmu_init(ARMCPU *cpu)
+{
+    g_assert_not_reached();
+}
+
+void kvm_arm_pvtime_init(ARMCPU *cpu, uint64_t ipa)
+{
+    g_assert_not_reached();
+}
+
+void kvm_arm_steal_time_finalize(ARMCPU *cpu, Error **errp)
+{
+    g_assert_not_reached();
+}
+
+uint32_t kvm_arm_sve_get_vls(ARMCPU *cpu)
+{
+    g_assert_not_reached();
+}
+
+void kvm_arm_enable_mte(Object *cpuobj, Error **errp)
+{
+    g_assert_not_reached();
+}

target/arm/kvm_arm.h

@@ -94,7 +94,7 @@ void kvm_arm_cpu_post_load(ARMCPU *cpu);
  */
 void kvm_arm_reset_vcpu(ARMCPU *cpu);
 
-#ifdef CONFIG_KVM
+struct kvm_vcpu_init;
 /**
  * kvm_arm_create_scratch_host_vcpu:
  * @fdarray: filled in with kvmfd, vmfd, cpufd file descriptors in that order
@@ -216,85 +216,4 @@ int kvm_arm_set_irq(int cpu, int irqtype, int irq, int level);
 
 void kvm_arm_enable_mte(Object *cpuobj, Error **errp);
 
-#else
-
-/*
- * It's safe to call these functions without KVM support.
- * They should either do nothing or return "not supported".
- */
-static inline bool kvm_arm_aarch32_supported(void)
-{
-    return false;
-}
-
-static inline bool kvm_arm_pmu_supported(void)
-{
-    return false;
-}
-
-static inline bool kvm_arm_sve_supported(void)
-{
-    return false;
-}
-
-static inline bool kvm_arm_mte_supported(void)
-{
-    return false;
-}
-
-/*
- * These functions should never actually be called without KVM support.
- */
-static inline void kvm_arm_set_cpu_features_from_host(ARMCPU *cpu)
-{
-    g_assert_not_reached();
-}
-
-static inline void kvm_arm_add_vcpu_properties(ARMCPU *cpu)
-{
-    g_assert_not_reached();
-}
-
-static inline int kvm_arm_get_max_vm_ipa_size(MachineState *ms, bool *fixed_ipa)
-{
-    g_assert_not_reached();
-}
-
-static inline int kvm_arm_vgic_probe(void)
-{
-    g_assert_not_reached();
-}
-
-static inline void kvm_arm_pmu_set_irq(ARMCPU *cpu, int irq)
-{
-    g_assert_not_reached();
-}
-
-static inline void kvm_arm_pmu_init(ARMCPU *cpu)
-{
-    g_assert_not_reached();
-}
-
-static inline void kvm_arm_pvtime_init(ARMCPU *cpu, uint64_t ipa)
-{
-    g_assert_not_reached();
-}
-
-static inline void kvm_arm_steal_time_finalize(ARMCPU *cpu, Error **errp)
-{
-    g_assert_not_reached();
-}
-
-static inline uint32_t kvm_arm_sve_get_vls(ARMCPU *cpu)
-{
-    g_assert_not_reached();
-}
-
-static inline void kvm_arm_enable_mte(Object *cpuobj, Error **errp)
-{
-    g_assert_not_reached();
-}
-
-#endif
-
 #endif