Re: [patch 23/23] powerpc: support multiple hugepage sizes

[Nishanth Aravamudan <nacc@us.ibm.com>]

On 26.05.2008 [00:23:40 +1000], npiggin@suse.de wrote:
> Instead of using the variable mmu_huge_psize to keep track of the huge
> page size we use an array of MMU_PAGE_* values.  For each supported
> huge page size we need to know the hugepte_shift value and have a
> pgtable_cache.  The hstate or an mmu_huge_psizes index is passed to
> functions so that they know which huge page size they should use.
> 
> The hugepage sizes 16M and 64K are setup(if available on the
> hardware) so that they don't have to be set on the boot cmd line in
> order to use them.  The number of 16G pages have to be specified at
> boot-time though (e.g. hugepagesz=16G hugepages=5).

This patch probably should updated Documentation as well, to indicate
power can also specify hugepagesz multiple times?

Thanks,
Nish

-- 
Nishanth Aravamudan <nacc@us.ibm.com>
IBM Linux Technology Center

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