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    SubjectRe: [patch] x86: increase CONFIG_NODES_SHIFT max to 10
    On Thu, Mar 11, 2010 at 02:23:54PM +0100, Ingo Molnar wrote:
    >
    > * David Rientjes <rientjes@google.com> wrote:
    >
    > > Some larger systems require more than 512 nodes, so increase the maximum
    > > CONFIG_NODES_SHIFT to 10 for a new max of 1024 nodes.
    > >
    > > This was tested with numa=fake=64M on systems with more than 64GB of RAM. A
    > > total of 1022 nodes were initialized.
    > >
    > > Successfully builds with no additional warnings on x86_64 allyesconfig.
    >
    > Not so here:
    >
    > drivers/base/node.c:169: error: negative width in bit-field ?<anonymous>?
    >
    > > Greg KH has queued up numa-fix-BUILD_BUG_ON-for-node_read_distance.patch
    > > for 2.6.35 to fix the build error when CONFIG_NODES_SHIFT is set to 10.
    > > See http://lkml.org/lkml/2010/3/10/390

    Well, it will be a few days before I queue it up...

    > erm. Alas I cannot merge it in the x86 tree without that fix being upstream.
    > Why for v2.6.35 - shouldnt that be v2.6.34?

    If it needs to go in before .35, or it should go through Ingo's trees, I
    have no objection.

    thanks,

    greg k-h


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