xen: make earlyprintk=xen work again
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>
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@ -1257,6 +1257,7 @@ asmlinkage void __init xen_start_kernel(void)
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boot_params.hdr.ramdisk_size = xen_start_info->mod_len;
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if (!is_initial_xendomain()) {
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add_preferred_console("xenboot", 0, NULL);
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add_preferred_console("tty", 0, NULL);
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add_preferred_console("hvc", 0, NULL);
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}
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@ -155,6 +155,7 @@ static void xenboot_write_console(struct console *console, const char *string,
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raw_console_write(string, len);
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write_console(0, "(early) ", 8);
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while (off < len && NULL != (pos = strchr(string+off, '\n'))) {
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linelen = pos-string+off;
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if (off + linelen > len)
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