linux-kernel - Re: [PATCH] x86_64: early memtest to find bad ram

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Message-ID: <47E3B335.3020501@zytor.com>
Date:	Fri, 21 Mar 2008 06:08:05 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	yhlu.kernel@...il.com, Andrew Morton <akpm@...ux-foundation.org>,
	kernel list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86_64: early memtest to find bad ram

Ingo Molnar wrote:
> 
> very nice patch! I always thought that this was the proper way to do 
> memtest - and we could in fact also do something like this after SMP 
> bringup, and hit the memory bus via multiple CPUs. [that will need a 
> different enumeration though than e820 maps]
> 
> one structural observation: please make this unified functionality, so 
> that 32-bit kernels can make use of it too.
> 

Indeed.  Of course, it would also be nice if distros shipped 
bootloader-invoked prekernel test software, like memtest86+, by default.

	-hpa
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