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cpu: Introduce cpu_class_set_vmsd()

This setter avoids redefining each VMStateDescription value to
vmstate_dummy by not referencing the value for CONFIG_USER_ONLY.

Suggested-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
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1 parent b170fce commit ca91b15f2d2e43eba8f9a3ec5090f0a11b861ba4 @afaerber committed Feb 22, 2013
Showing with 21 additions and 0 deletions.
  1. +21 −0 include/qom/cpu.h
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@@ -138,6 +138,27 @@ void cpu_reset(CPUState *cpu);
ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model);
/**
+ * cpu_class_set_vmsd:
+ * @cc: CPU class
+ * @value: Value to set. Unused for %CONFIG_USER_ONLY.
+ *
+ * Sets #VMStateDescription for @cc.
+ *
+ * The @value argument is intentionally discarded for the non-softmmu targets
+ * to avoid linker errors or excessive preprocessor usage. If this behavior
+ * is undesired, you should assign #CPUState.vmsd directly instead.
+ */
+#ifndef CONFIG_USER_ONLY
+static inline void cpu_class_set_vmsd(CPUClass *cc,
+ const struct VMStateDescription *value)
+{
+ cc->vmsd = value;
+}
+#else
+#define cpu_class_set_vmsd(cc, value) ((cc)->vmsd = NULL)
+#endif
+
+/**
* qemu_cpu_has_work:
* @cpu: The vCPU to check.
*

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