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SubjectRe: [PATCH] x86_64: early memtest to find bad ram
On Sat, Mar 22, 2008 at 2:01 PM, H. Peter Anvin <hpa@zytor.com> wrote:
> Arjan van de Ven wrote:
> > On Thu, 20 Mar 2008 23:58:33 -0700
> > Yinghai Lu <yhlu.kernel.send@gmail.com> wrote:
> >
> >> do simple memtest after init_memory_mapping
> >>
> >> use find_e820_area_size to find all ram range that is not reserved.
> >
> > be careful, there's some special memory that e820 right now says is not reserved,
> > but still has bios data (the first 4Kb of memory come to mind)
> >
>
> Is that true even after Yinghai's changes? I have lost track of all the
> patches...

find_e820_area_size should be safe.

YH


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