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 |
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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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