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    SubjectRe: [1/3] Add 4GB DMA32 zone
    Hi,

    On Mon, 12 Sep 2005, Andi Kleen wrote:

    > > On Sun, 11 Sep 2005, Andi Kleen wrote:
    > > > -#define MAX_NR_ZONES 3 /* Sync this with ZONES_SHIFT */
    > > > -#define ZONES_SHIFT 2 /* ceil(log2(MAX_NR_ZONES)) */
    > > > +#define MAX_NR_ZONES 4 /* Sync this with ZONES_SHIFT */
    > > > +#define ZONES_SHIFT 3 /* ceil(log2(MAX_NR_ZONES)) */
    > >
    > > Why needs ZONES_SHIFT to be increased?
    > >
    > > > -#define FLAGS_RESERVED 8
    > > > +#define FLAGS_RESERVED 9
    > >
    > > I would prefer to keep this at 8.
    >
    > sparsemem needs these two.

    Did I somehow offend you, that I don't deserve an answer?
    The reason for my question is rather simple (and I thought obvious), the
    four zone types fit into two bits, so what is sparsemem doing with this
    extra bit?

    bye, Roman
    -
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