linux-kernel - Re: x86: memtest bootparam

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Message-ID: <86802c440804191354q45fdedelce0ec38ba52f3880@mail.gmail.com>
Date:	Sat, 19 Apr 2008 13:54:14 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Pavel Machek" <pavel@....cz>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Yinghai Lu" <yhlu.kernel.send@...il.com>,
	"Ingo Molnar" <mingo@...e.hu>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: x86: memtest bootparam

On Sat, Apr 19, 2008 at 6:33 AM, Pavel Machek <pavel@....cz> wrote:
> Hi!
>
>
>  > Linux Kernel Mailing List <linux-kernel@...r.kernel.org> wrote:
>  >
>  > > Gitweb:     http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c64df70793a9c344874eb4af19f85e0662d2d3ee
>  > > Commit:     c64df70793a9c344874eb4af19f85e0662d2d3ee
>  > > Parent:     9b967106da0357ef8b08847dce35584a04134f20
>  > > Author:     Yinghai Lu <yhlu.kernel.send@...il.com>
>  > > AuthorDate: Fri Mar 21 18:56:19 2008 -0700
>  > > Committer:  Ingo Molnar <mingo@...e.hu>
>  > > CommitDate: Thu Apr 17 17:41:21 2008 +0200
>  > >
>  > >     x86: memtest bootparam
>  > >
>  > > ...
>  > >
>  > >
>  > > +   memtest=        [KNL,X86_64] Enable memtest
>  > > +                   Format: <integer>
>  > > +                   range: 0,4 : pattern number
>  > > +                   default : 0 <disable>
>  >
>  > OK.  Did the new memtest feature get documented anywhere, btw?  I'm only
>  > vaguely aware of its existence.
>
>  Actually it would be nice if memtest was global, not x86-specific,
>  feature.
>
>  I had some fun with arm running with 256mb, when only 128mb was
>  present. It booted succesfully...

depends if you have find_e820_area_size in you platform. that need
reserve_early...

maybe we need to make reserve_early generic at first.

YH
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