xen-console: add save/restore
Add code to:
1. Deal with the console page being canonicalized. During save, the
console's mfn in the start_info structure is canonicalized to a pfn.
In order to deal with that, we always use a copy of the pfn and
indirect off that all the time. However, we fall back to using the
mfn if the pfn hasn't been initialized yet.
2. Restore the console event channel, and rebind it to the existing irq.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/include/xen/hvc-console.h b/include/xen/hvc-console.h
index efc3237..fd5483a 100644
--- a/include/xen/hvc-console.h
+++ b/include/xen/hvc-console.h
@@ -3,6 +3,8 @@
extern struct console xenboot_console;
+void xen_console_resume(void);
+
void xen_raw_console_write(const char *str);
void xen_raw_printk(const char *fmt, ...);