[PATCH 08/13] accel/hvf: add hvf_enabled() for common code

[Pierrick Bouvier <pierrick.bouvier@linaro.org>]

Other accelerators define a CONFIG_{accel}_IS_POSSIBLE when
COMPILING_PER_TARGET is not defined, except hvf.

Without this change, target/arm/cpu.c can't find hvf_enabled.

Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
---
 include/system/hvf.h  | 14 +++++++++-----
 accel/hvf/hvf-stub.c  |  3 +++
 accel/hvf/meson.build |  1 +
 3 files changed, 13 insertions(+), 5 deletions(-)
 create mode 100644 accel/hvf/hvf-stub.c

diff --git a/include/system/hvf.h b/include/system/hvf.h
index 356fced63e3..1ee2a4177d9 100644
--- a/include/system/hvf.h
+++ b/include/system/hvf.h
@@ -19,15 +19,19 @@
 
 #ifdef COMPILING_PER_TARGET
 #include "cpu.h"
+# ifdef CONFIG_HVF
+#  define CONFIG_HVF_IS_POSSIBLE
+# endif
+#else
+# define CONFIG_HVF_IS_POSSIBLE
+#endif
 
-#ifdef CONFIG_HVF
+#ifdef CONFIG_HVF_IS_POSSIBLE
 extern bool hvf_allowed;
 #define hvf_enabled() (hvf_allowed)
-#else /* !CONFIG_HVF */
+#else
 #define hvf_enabled() 0
-#endif /* !CONFIG_HVF */
-
-#endif /* COMPILING_PER_TARGET */
+#endif /* CONFIG_HVF_IS_POSSIBLE */
 
 #define TYPE_HVF_ACCEL ACCEL_CLASS_NAME("hvf")
 
diff --git a/accel/hvf/hvf-stub.c b/accel/hvf/hvf-stub.c
new file mode 100644
index 00000000000..22e2f50c01d
--- /dev/null
+++ b/accel/hvf/hvf-stub.c
@@ -0,0 +1,3 @@
+#include "qemu/osdep.h"
+
+bool hvf_allowed;
diff --git a/accel/hvf/meson.build b/accel/hvf/meson.build
index fc52cb78433..7745b94e50f 100644
--- a/accel/hvf/meson.build
+++ b/accel/hvf/meson.build
@@ -5,3 +5,4 @@ hvf_ss.add(files(
 ))
 
 specific_ss.add_all(when: 'CONFIG_HVF', if_true: hvf_ss)
+common_ss.add(when: 'CONFIG_HVF', if_false: files('hvf-stub.c'))
-- 
2.47.2