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SubjectRe: [patch 07/20] Allow paravirt backend to choose kernel PMD sharing
Christoph Lameter wrote:
> Acked-by: Christoph Lameter <clameter@sgi.com>
>
> for all thats worth since I am not a i386 specialist.
>
> How much of the issues with page struct sharing between slab and arch code
> does this address?
>

I haven't been following that thread as closely as I should be, so I
don't have an answer. I guess the interesting thing in this patch is
that it only uses the pmd cache for usermode pmds (which are
pre-zeroed), and normal page allocations for kernel pmds. Also, if the
kernel pmds are unshared, the pgds are page-sized, so its not really
making good use of the pgd cache.

J
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