Messages in this thread |  | | | Date | Sat, 22 Mar 2008 06:45:37 +0100 | | From | Willy Tarreau <> | | Subject | Re: [PATCH] x86_64: early memtest to find bad ram |
On Fri, Mar 21, 2008 at 03:29:19PM +0100, Ingo Molnar wrote:
> > * H. Peter Anvin <hpa@zytor.com> 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.
>
> some do (Fedora for example), but it's still a bit quirky for users to
> invoke and it would be nice to see those results in the kernel log as
> well and flag possibly flaky systems that way. (add a taint bit, etc.,
> etc.)
It may even make sense to merge in the full memtest86. The code is small
(both source and binary) and IIRC it shares a lot of init code with x86.
The remaining problem would then be how to maintain its tests up do date.
Willy
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