Re: [PATCH 0/4] memblock related fixes for -tip

Yinghai Lu
2010-10-13T22:08:01Z

On 10/13/2010 01:03 PM, Jeremy Fitzhardinge wrote:
>> a) Add an explicit interface to allocate bottoms-up, and have Xen use it
>> because it needs it. This is appropriate if (and only if) the
>> allocations in Xen aren't underneath a bunch of extra layers.
>
> The allocation is done in find_early_table_space() in x86/mm/init.c, so
> the allocation call itself can't be easily replaced, but I suppose some
> of the parameters could be global and tweaked by Xen code, but that's
> pretty ugly.

we already have
base = memblock_find_in_range(start, max_pfn_mapped<<PAGE_SHIFT,
tables, PAGE_SIZE);

so looks like xen have set max_pfn_mapped wrong?

Yinghai