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xen: make earlyprintk=xen work again

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For some perverse reason, if you call add_preferred_console() it prevents
setup_early_printk() from successfully enabling the boot console -
unless you make it a preferred console too...

Also, make xenboot console output distinct from normal console output,
since it gets repeated when the console handover happens, and the
duplicated output is confusing without disambiguation.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Jeremy Fitzhardinge 2008-05-26 23:31:12 +01:00 committed by Thomas Gleixner
parent e4dcff1f6e
commit 83abc70a4c
2 changed files with 2 additions and 0 deletions
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1
arch/x86/xen/enlighten.c
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@ -1257,6 +1257,7 @@ asmlinkage void __init xen_start_kernel(void)
boot_params.hdr.ramdisk_size = xen_start_info->mod_len;
if (!is_initial_xendomain()) {
add_preferred_console("xenboot", 0, NULL);
add_preferred_console("tty", 0, NULL);
add_preferred_console("hvc", 0, NULL);
}

1
drivers/char/hvc_xen.c
View File

@ -155,6 +155,7 @@ static void xenboot_write_console(struct console *console, const char *string,
raw_console_write(string, len);
write_console(0, "(early) ", 8);
while (off < len && NULL != (pos = strchr(string+off, '\n'))) {
linelen = pos-string+off;
if (off + linelen > len)