linux-kernel - Re: [PATCH v5 2/2] arch/x86: remove pci uart early console from early

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Message-ID: <20150602224305.GB64269@worksta>
Date:	Tue, 2 Jun 2015 15:43:06 -0700
From:	Bin Gao <bin.gao@...ux.intel.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Ingo Molnar <mingo@...nel.org>, Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
	Peter Hurley <peter@...leysoftware.com>,
	Jiri Slaby <jslaby@...e.cz>, Borislav Petkov <bp@...e.de>,
	"Stuart R. Anderson" <stuart.r.anderson@...el.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 2/2] arch/x86: remove pci uart early console from
 early_prink.c

On Tue, Jun 02, 2015 at 11:07:39PM +0200, Thomas Gleixner wrote:
> What about the memory mapped uarts which have been source of trouble
> in the past?
> 
> Thanks,
> 
> 	tglx

Not sure which specific early console you are referring to.
Currently we have serial, ttyS, vga, dbgp, xen, efi and pciserial in
arch/x86/kernel/early_printk.c, and only pciserial is memory mapped
(but it's being removed).

And this patch only touches pciserial/serial parts so ideally shouldn't
have impact on other early consoles.

-Bin
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