linux-kernel - Re: [PATCH 09/34] x86: Allow to override the ROOT

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Date:	Wed, 06 Apr 2011 09:47:44 +0200
From:	Michal Marek <mmarek@...e.cz>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, x86@...nel.org
Subject: Re: [PATCH 09/34] x86: Allow to override the ROOT_DEV variable

On 5.4.2011 17:30, H. Peter Anvin wrote:
>> --- a/arch/x86/boot/Makefile
>> +++ b/arch/x86/boot/Makefile
>> @@ -13,7 +13,7 @@
>>  # This can be either FLOPPY, CURRENT, /dev/xxxx or empty, in which case
>>  # the default of FLOPPY is used by 'build'.
>>  
>> -ROOT_DEV	:= CURRENT
>> +ROOT_DEV	?= CURRENT
>>  
>>  # If you want to preset the SVGA mode, uncomment the next line and
>>  # set SVGA_MODE to whatever number you want.
> 
> Is this a good thing?  As far as I understand ?= it may mean picking
> something up from the outside environment.
> 
> Since ROOT_DEV has been obsolete for 15 years or more, this would seem
> to be a needless new error mode.

So can we just set the default root device to (0, 0)?

Michal
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