[RFC PATCH v5 16/21] hw/arm/virt: Check accelerator availability at runtime

[Philippe Mathieu-Daudé]

It is not possible to call accelerator runtime helpers
when QOM types are registered, because they depend on
the parsing of the '-accel FOO' command line option,
which happens after main().

Now than get_valid_cpu_types() is called after
accelerator initializations, it is safe to call the
accelerator helpers:

  main
   + configure_accelerators
   + qmp_x_exit_preconfig
     + qemu_init_board
       + machine_run_board_init
         + is_cpu_type_supported

Replace compile-time check on CONFIG_{ACCEL} by
runtime check on {accel}_enabled() helpers.

Signed-off-by: Philippe Mathieu-Daudé <phi...@linaro.org>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
---
 hw/arm/virt.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index f29f541ea93..13aa2f34c6c 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -3130,7 +3130,7 @@ static GPtrArray *virt_get_valid_cpu_types(const 
MachineState *ms)
 {
     GPtrArray *vct = g_ptr_array_new_with_free_func(g_free);
 
-#ifdef CONFIG_TCG
+    if (tcg_enabled()) {
         g_ptr_array_add(vct, g_strdup(ARM_CPU_TYPE_NAME("cortex-a7")));
         g_ptr_array_add(vct, g_strdup(ARM_CPU_TYPE_NAME("cortex-a15")));
 #ifdef TARGET_AARCH64
@@ -3144,13 +3144,13 @@ static GPtrArray *virt_get_valid_cpu_types(const 
MachineState *ms)
         g_ptr_array_add(vct, g_strdup(ARM_CPU_TYPE_NAME("neoverse-v1")));
         g_ptr_array_add(vct, g_strdup(ARM_CPU_TYPE_NAME("neoverse-n2")));
 #endif /* TARGET_AARCH64 */
-#endif /* CONFIG_TCG */
+    }
 #ifdef TARGET_AARCH64
         g_ptr_array_add(vct, g_strdup(ARM_CPU_TYPE_NAME("cortex-a53")));
         g_ptr_array_add(vct, g_strdup(ARM_CPU_TYPE_NAME("cortex-a57")));
-#if defined(CONFIG_KVM) || defined(CONFIG_HVF)
+        if (kvm_enabled() || hvf_enabled()) {
             g_ptr_array_add(vct, g_strdup(ARM_CPU_TYPE_NAME("host")));
-#endif /* CONFIG_KVM || CONFIG_HVF */
+        }
 #endif /* TARGET_AARCH64 */
     g_ptr_array_add(vct, g_strdup(ARM_CPU_TYPE_NAME("max")));
 
-- 
2.47.1