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    SubjectRe: How do I access ioports from userspace?
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    >>>>> "Ben" == Benjamin Herrenschmidt <benh@kernel.crashing.org> writes:

    Ben> On Fri, 2003-09-26 at 09:34, Frank v Waveren wrote:
    >> in[bwl]/out[bwl] are available on a lot more than just x86. Mind
    >> you, the mechanisms are subtly different. Then again, if you're
    >> using direct hardware access you're not going for portability
    >> anyway.

    Ben> Are they from userland ? I doubt it...

    Actually yes on some architectures, ia64 emulates it the ia32
    API. That said, it's certainly not something one should be encouraged
    to do, using MMIO is a far better approach.

    Cheers,
    Jes
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