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

[Yinghai Lu]

On Fri, Mar 21, 2008 at 6:08 AM, H. Peter Anvin <hpa@xxxxxxxxx> wrote:
> 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.

the current memtest86 is running in 32 bit mode, and only support 64G ram.

I tried to expand that a bit, to support 1024g, but it only works on
some machine.
could be stack provide is not big enough?

YH
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