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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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