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    SubjectRe: 2.6.18-rc5-mm1: drivers/infiniband/hw/amso1100/c2.c compile error
        Russell> Sure, if you want a _non-atomic_ 64-bit write then that's
    Russell> possible, but many 32-bit architectures can't do a 64-bit
    Russell> atomic IO write and that isn't something they can "fix".

    I agree completely. And going one step further: if an architecture
    cannot implement a 64-bit write atomically, then the precise
    serialization that is required is device-specific knowledge that
    belongs in the device driver.

    (For example, in the mthca case, the only serialization required is
    that no writes go to the same page of MMIO space between the two
    32-bit halves of the 64-bit write)

    - R.

    VGER BF report: H 0
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      Last update: 2006-09-01 22:57    [W:0.019 / U:2.388 seconds]
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