target/arm: Move '-cpu host' code to cpu64.c

Now that KVM has dropped AArch32 host support, the 'host' CPU type is
always AArch64, and we can move it to cpu64.c.  This move will allow
us to share code between it and '-cpu max', which should behave
the same as '-cpu host' when using KVM or HVF.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Alexander Graf <agraf@csgraf.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220204165506.2846058-2-peter.maydell@linaro.org

1 files changed, 30 insertions, 0 deletions

diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
index 8786be7783..052666b819 100644
--- a/target/arm/cpu64.c
+++ b/target/arm/cpu64.c
@@ -30,6 +30,7 @@
 #endif
 #include "sysemu/kvm.h"
 #include "kvm_arm.h"
+#include "hvf_arm.h"
 #include "qapi/visitor.h"
 #include "hw/qdev-properties.h"
 
@@ -681,6 +682,31 @@ void aarch64_add_pauth_properties(Object *obj)
     }
 }
 
+#if defined(CONFIG_KVM) || defined(CONFIG_HVF)
+static void arm_host_initfn(Object *obj)
+{
+    ARMCPU *cpu = ARM_CPU(obj);
+
+#ifdef CONFIG_KVM
+    kvm_arm_set_cpu_features_from_host(cpu);
+    if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) {
+        aarch64_add_sve_properties(obj);
+        aarch64_add_pauth_properties(obj);
+    }
+#else
+    hvf_arm_set_cpu_features_from_host(cpu);
+#endif
+    arm_cpu_post_init(obj);
+}
+
+static const TypeInfo host_arm_cpu_type_info = {
+    .name = TYPE_ARM_HOST_CPU,
+    .parent = TYPE_AARCH64_CPU,
+    .instance_init = arm_host_initfn,
+};
+
+#endif
+
 /* -cpu max: if KVM is enabled, like -cpu host (best possible with this host);
  * otherwise, a CPU with as many features enabled as our emulation supports.
  * The version of '-cpu max' for qemu-system-arm is defined in cpu.c;
@@ -1023,6 +1049,10 @@ static void aarch64_cpu_register_types(void)
     for (i = 0; i < ARRAY_SIZE(aarch64_cpus); ++i) {
         aarch64_cpu_register(&aarch64_cpus[i]);
     }
+
+#if defined(CONFIG_KVM) || defined(CONFIG_HVF)
+    type_register_static(&host_arm_cpu_type_info);
+#endif
 }
 
 type_init(aarch64_cpu_register_types)