xen/x86: allow "earlyprintk=xen" to work for PV Dom0

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@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/d4a34540-a476-df2c-bca6-732d0d58c5f0@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>

diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c
index e469532..b1c0e06 100644 (file)
--- a/arch/x86/xen/enlighten_pv.c
+++ b/arch/x86/xen/enlighten_pv.c
@@ -1348,7 +1348,6 @@ asmlinkage __visible void __init xen_start_kernel(void)
        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_start_kernel(void)
 #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);