Messages in this thread | | | Subject | Re: How do I access ioports from userspace? | From | Jes Sorensen <> | Date | 26 Sep 2003 04:56:50 -0400 |
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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.
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