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    SubjectRe: [PATCH] Factor in buddy allocator alignment requirements in node memory alignment
    On Mon, 2005-05-16 at 12:43 -0700, christoph wrote:
    > On Mon, 16 May 2005, Dave Hansen wrote:
    > > On Mon, 2005-05-16 at 12:05 -0700, christoph wrote:
    > > > Memory for nodes on i386 is currently aligned on 2 MB boundaries.
    > > > However, the buddy allocator needs pages to be aligned on
    > > > PAGE_SIZE << MAX_ORDER which is 8MB if MAX_ORDER = 11.
    > >
    > > Why do you need this? Are you planning on allowing NUMA KVA remap pages
    > > to be handed over to the buddy allocator? That would be a major
    > > departure from what we do now, and I'd be very interested in seeing how
    > > that is implemented before a infrastructure for it goes in.
    > Because the buddy allocator is complaining about wrongly allocated zones!

    Just because it complains doesn't mean that anything is actually
    wrong :)

    Do you know which pieces of code actually break if the alignment doesn't
    meet what that warning says?

    -- Dave

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