xen: use the hvc console infrastructure for Xen console
Implement a Xen back-end for hvc console.
* * *
Add early printk support via hvc console, enable using
"earlyprintk=xen" on the kernel command line.
From: Gerd Hoffmann <kraxel@suse.de>
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Olof Johansson <olof@lixom.net>
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 97bd71b..9e8f214 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -604,6 +604,14 @@
help
Toshiba's Cell Reference Set Beat Console device driver
+config HVC_XEN
+ bool "Xen Hypervisor Console support"
+ depends on XEN
+ select HVC_DRIVER
+ default y
+ help
+ Xen virtual console device driver
+
config HVCS
tristate "IBM Hypervisor Virtual Console Server support"
depends on PPC_PSERIES