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From: Bodo Eggert <7eggert@gmx.de>
Subject: Re: x86: memtest bootparam
To: Andrew Morton <akpm@linux-foundation.org>,
       Yinghai Lu <yhlu.kernel.send@gmail.com>, Ingo Molnar <mingo@elte.hu>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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Date: Sat, 19 Apr 2008 12:50:13 +0200
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Andrew Morton <akpm@linux-foundation.org> wrote:
> Linux Kernel Mailing List <linux-kernel@vger.kernel.org> wrote:

>> Gitweb:    
>>http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c64df70793a9c344874eb4af19f85e0662d2d3ee
>> Commit:     c64df70793a9c344874eb4af19f85e0662d2d3ee
>> Author:     Yinghai Lu <yhlu.kernel.send@gmail.com>
>> Committer:  Ingo Molnar <mingo@elte.hu>
>> 
>>     x86: memtest bootparam

>> +    memtest=        [KNL,X86_64] Enable memtest
>> +                    Format: <integer>
>> +                    range: 0,4 : pattern number
>> +                    default : 0 <disable>

What about running multiple tests?

I'd use e.g. a bitmask: memtest=0xE will run test 2, 3 and 4.