linux-kernel - Re: [PATCH]serial: make early_uart to use early_prarm instead of console

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Message-ID: <465172EC.3010303@redhat.com>
Date:	Mon, 21 May 2007 12:22:36 +0200
From:	Gerd Hoffmann <kraxel@...hat.com>
To:	Yinghai Lu <yhlu.kernel@...il.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Bjorn Helgaas <bjorn.helgaas@...com>, Andi Kleen <ak@...e.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux kernel mailing list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH]serial: make early_uart to use early_prarm instead of
 console_initcall

Yinghai Lu wrote:
> Gerd's patch  (console handover) was merged into mainline. it will
> switch from early_printk to normal console in register_console via
> CON_BOOT flags.. ===> only for x86

Tagging boot consoles (aka early_printk) with CON_BOOT certainly makes 
sense.  Just doing that doesn't work for ia64?

What is the point in making that work on x86 additionally to serial 
support in early_printk?  It might make sense to split away the serial 
bits from early_printk.c and move them out of arch/ into -- say -- 
drivers/serial/, so other architectures can use that too and we have 
only one serial earlyprintk implementation in the kernel.  Not sure it 
is worth the effort given the code size.

cheers,
   Gerd

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