softmmu: Use accel_find("xen") instead of xen_available()

The xen_available() function is used only to produce an error
for some Xen-specific command line options in QEMU binaries where
Xen support was not compiled in: it just returns the value of
the CONFIG_XEN define.

Now that accelerators are QOM classes, we can check for
"does this binary have Xen compiled in" with accel_find("xen"),
and drop the xen_available() function.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210730105947.28215-2-peter.maydell@linaro.org

diff --git a/include/sysemu/arch_init.h b/include/sysemu/arch_init.h
index e723c467eb299da6ef8b256dadcec9b274092c34..7acfc62418fe659d219f04235749076f011a1d34 100644 (file)
--- a/include/sysemu/arch_init.h
+++ b/include/sysemu/arch_init.h
@@ -30,7 +30,6 @@ enum {
 extern const uint32_t arch_type;
 
 int kvm_available(void);
-int xen_available(void);
 
 /* default virtio transport per architecture */
 #define QEMU_ARCH_VIRTIO_PCI (QEMU_ARCH_ALPHA | QEMU_ARCH_ARM | \

diff --git a/softmmu/arch_init.c b/softmmu/arch_init.c
index 6ff9f30baddeeb35b6a0e42d880bb1e56100d321..3f4d7c1b1cdbfe11c9f0f04ab709cf26c04b61ff 100644 (file)
--- a/softmmu/arch_init.c
+++ b/softmmu/arch_init.c
@@ -96,12 +96,3 @@ int kvm_available(void)
     return 0;
 #endif
 }
-
-int xen_available(void)
-{
-#ifdef CONFIG_XEN
-    return 1;
-#else
-    return 0;
-#endif
-}

diff --git a/softmmu/vl.c b/softmmu/vl.c
index 5ca11e74694e6b4b6ae83cb320d0a639d356efcc..82d574fe4b2aa2d6a2a681c9417da24b7b0a2efc 100644 (file)
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -3448,21 +3448,21 @@ void qemu_init(int argc, char **argv, char **envp)
                 has_defaults = 0;
                 break;
             case QEMU_OPTION_xen_domid:
-                if (!(xen_available())) {
+                if (!(accel_find("xen"))) {
                     error_report("Option not supported for this target");
                     exit(1);
                 }
                 xen_domid = atoi(optarg);
                 break;
             case QEMU_OPTION_xen_attach:
-                if (!(xen_available())) {
+                if (!(accel_find("xen"))) {
                     error_report("Option not supported for this target");
                     exit(1);
                 }
                 xen_mode = XEN_ATTACH;
                 break;
             case QEMU_OPTION_xen_domid_restrict:
-                if (!(xen_available())) {
+                if (!(accel_find("xen"))) {
                     error_report("Option not supported for this target");
                     exit(1);
                 }