[PATCH v2 4/9] xen/x86: allow "earlyprintk=xen" to work for PV Dom0

[Jan Beulich]

With preferred consoles "tty" and "hvc" announced as preferred,
registering "xenboot" early won't result in use of the console: It also
needs to be registered as preferred. Generalize this from being DomU-
only so far.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
---
v2: Re-base.

--- a/arch/x86/xen/enlighten_pv.c
+++ b/arch/x86/xen/enlighten_pv.c
@@ -1348,7 +1348,6 @@ asmlinkage __visible void __init xen_sta
 	boot_params.hdr.hardware_subarch = X86_SUBARCH_XEN;
 
 	if (!xen_initial_domain()) {
-		add_preferred_console("xenboot", 0, NULL);
 		if (pci_xen)
 			x86_init.pci.arch_init = pci_xen_init;
 		x86_platform.set_legacy_features =
@@ -1393,6 +1392,7 @@ asmlinkage __visible void __init xen_sta
 #endif
 	}
 
+	add_preferred_console("xenboot", 0, NULL);
 	if (!boot_params.screen_info.orig_video_isVGA)
 		add_preferred_console("tty", 0, NULL);
 	add_preferred_console("hvc", 0, NULL);