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    Subject[Patch 10/29] GRU - Support 64-bit GRU addresses
    From: Jack Steiner <steiner@sgi.com>

    Increase the maximum address supported by the SGI GRU
    driver to a full 64 bits. Note that GRU addresses are not
    always the same as socket virtual addresses. Sockets may not
    necessarily support the full 64 bits.

    Signed-off-by: Jack Steiner <steiner@sgi.com>

    ---
    drivers/misc/sgi-gru/grutables.h | 6 ------
    1 file changed, 6 deletions(-)

    Index: linux/drivers/misc/sgi-gru/grutables.h
    ===================================================================
    --- linux.orig/drivers/misc/sgi-gru/grutables.h 2009-11-20 09:32:29.000000000 -0600
    +++ linux/drivers/misc/sgi-gru/grutables.h 2009-11-20 09:32:31.000000000 -0600
    @@ -293,13 +293,7 @@ extern struct mcs_op_statistic mcs_op_st
    #define ASID_INC 8 /* number of regions */

    /* Generate a GRU asid value from a GRU base asid & a virtual address. */
    -#if defined CONFIG_IA64
    #define VADDR_HI_BIT 64
    -#elif defined CONFIG_X86_64
    -#define VADDR_HI_BIT 48
    -#else
    -#error "Unsupported architecture"
    -#endif
    #define GRUREGION(addr) ((addr) >> (VADDR_HI_BIT - 3) & 3)
    #define GRUASID(asid, addr) ((asid) + GRUREGION(addr))



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