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    SubjectRe: [PATCH] mm: D-cache aliasing issue in cow_user_page
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    From: "Matt Reimer" <mattjreimer@gmail.com>
    Date: Tue, 5 Dec 2006 16:57:12 -0800

    > Right, but isn't he declaring that each architecture needs to take
    > care of this? So, say, on ARM we'd need to make kunmap() not a NOP and
    > call flush_dcache_page() ?

    No. He is only solving a problem that occurs on HIGHMEM
    configurations on systems which can have D-cache aliasing
    issues.
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