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

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Message-ID: <20150602192036.GA52512@worksta>
Date:	Tue, 2 Jun 2015 12:20:36 -0700
From:	Bin Gao <bin.gao@...ux.intel.com>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	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 01:54:33PM +0200, Ingo Molnar wrote:
> 
> * Bin Gao <bin.gao@...ux.intel.com> wrote:
> 
> > The arch independent uart8250 early console driver has good support for memory 
> > mapped and io port based 8250 uarts. Since pci is arch independent so it's 
> > natural to extend uart8250 to support mem, io and pci. Hence pci uart early 
> > console in arch/x86/kernel_printk.c by the following commit: 'commit 
> > 5140fda16051 ("Specify PCI based UART for earlyprintk")' is removed. And its 
> > equivalent function will be available from uart8250 early console driver.
> 
> In what way have you tested this change, does serial-earlyprintk still work on x86 
> after the change?
> 
> Thanks,
> 
> 	Ingo

Yes, this patch was tested with earlyprintk=serial,0x3f8 on my x86 box and
the early console worked fine.
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