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    SubjectRe: [14/18] Configure stack size
    On Wed, 03 Oct 2007 20:59:49 -0700
    Christoph Lameter <clameter@sgi.com> wrote:

    > Make the stack size configurable now that we can fallback to vmalloc
    > if necessary. SGI NUMA configurations may need more stack because
    > cpumasks and nodemasks are at times kept on the stack. With the
    > coming 16k cpu support this is going to be 2k just for the mask. This
    > patch allows to run with 16k or 32k kernel stacks on x86_74.

    there is still code that does DMA from and to the stack....
    how would this work with virtual allocated stack?
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