Re: [PATCH 10/28] i386: map enough initial memory to create lowmemmappings

[H. Peter Anvin]

Eric W. Biederman wrote:
> I happened to be looking at this stretch of code and I have realized
> that this is quite simply the wrong fix.
>
> The problem is that it depends intimately on the details of
> alloc_bootmem_pages_low.  Essentially the problem is that when
> we are setting up the identity mappings in paging_init we assume
> the identity mappings already exist.
>
> If there are holes in the memory map or someone changes the way
> pages are returned from alloc_bootmem_pages_low() this code
> will break again.

How would holes in the memory map affect it?

	-hpa
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