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Re: x86: memtest bootparam
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From:
Yinghai Lu <yhlu.kernel@...>
To: Andrew Morton <akpm@...>
Cc: Yinghai Lu <yhlu.kernel.send@...>, Ingo Molnar <mingo@...>, Linux Kernel Mailing List <linux-kernel@...>
Subject:
Re: x86: memtest bootparam
Date: Friday, April 18, 2008 - 6:07 pm
On Fri, Apr 18, 2008 at 2:52 PM, Andrew Morton <akpm@linux-foundation.org> wrote:
quoted text
> On Fri, 18 Apr 2008 17:17:44 GMT > 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=c64df7...
> > Commit: c64df70793a9c344874eb4af19f85e0662d2d3ee > > Parent: 9b967106da0357ef8b08847dce35584a04134f20 > > Author: Yinghai Lu <yhlu.kernel.send@gmail.com> > > AuthorDate: Fri Mar 21 18:56:19 2008 -0700 > > Committer: Ingo Molnar <mingo@elte.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.
need one text file in Documentation ?
quoted text
> > > > > +config MEMTEST_BOOTPARAM > > + bool "Memtest boot parameter" > > + depends on X86_64 > > + default y > > + help > > + This option adds a kernel parameter 'memtest', which allows memtest > > + to be disabled at boot. If this option is selected, memtest > > + functionality can be disabled with memtest=0 on the kernel > > + command line. The purpose of this option is to allow a single > > + kernel image to be distributed with memtest built in, but not > > + necessarily enabled. > > + > > + If you are unsure how to answer this question, answer Y. > > + > > +config MEMTEST_BOOTPARAM_VALUE > > + int "Memtest boot parameter default value (0-4)" > > + depends on MEMTEST_BOOTPARAM > > + range 0 4 > > + default 0 > > + help > > + This option sets the default value for the kernel parameter > > + 'memtest', which allows memtest to be disabled at boot. If this > > + option is set to 0 (zero), the memtest kernel parameter will > > + default to 0, disabling memtest at bootup. If this option is > > + set to 4, the memtest kernel parameter will default to 4, > > + enabling memtest at bootup, and use that as pattern number. > > + > > + If you are unsure how to answer this question, answer 0. > > These seem pointless. Why not just unconditionally implement memtest=? > All the code for that should be __init anyway so we're hardly saving > anything here.
also for big box, like 64g above, that will take a while. YH --
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Messages in current thread:
Re: x86: memtest bootparam
, Andrew Morton
, (Fri Apr 18, 5:52 pm)
Re: x86: memtest bootparam
, Pavel Machek
, (Sat Apr 19, 9:33 am)
Re: x86: memtest bootparam
, Yinghai Lu
, (Sat Apr 19, 4:54 pm)
Re: x86: memtest bootparam
, Ingo Molnar
, (Mon Apr 21, 10:17 am)
Re: x86: memtest bootparam
, Yinghai Lu
, (Mon Apr 21, 12:38 pm)
Re: x86: memtest bootparam
, Yinghai Lu
, (Fri Apr 18, 6:07 pm)
Re: x86: memtest bootparam
, Andrew Morton
, (Fri Apr 18, 7:32 pm)
Re: x86: memtest bootparam
, Yinghai Lu
, (Fri Apr 18, 8:03 pm)
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