Eric Lee / smarc-fsl-linux-kernel

06 Dec, 2006

1 commit

  • 510c72ad2   sh: Fixup various PAGE_SIZE == 4096 assumptions. ... Browse Code »

    There were a number of places that made evil PAGE_SIZE == 4k
    assumptions that ended up breaking when trying to play with
    8k and 64k page sizes, this fixes those up.

    The most significant change is the way we load THREAD_SIZE,
    previously this was done via:

    mov #(THREAD_SIZE >> 8), reg
    shll8 reg

    to avoid a memory access and allow the immediate load. With
    a 64k PAGE_SIZE, we're out of range for the immediate load
    size without resorting to special instructions available in
    later ISAs (movi20s and so on). The "workaround" for this is
    to bump up the shift to 10 and insert a shll2, which gives a
    bit more flexibility while still being much cheaper than a
    memory access.

    Signed-off-by: Paul Mundt

    Paul Mundt
     

01 Jul, 2006

1 commit

17 Jan, 2006

1 commit