Messages in this thread | ![/](/images/icornerl.gif) | | Subject | Re: PCI domain stuff | From | "David S. Miller" <> | Date | 30 Jun 2003 23:02:56 -0700 |
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[ Pater, please retain the CC: list in your replies. I scan linux-kernel casually at best, and I probably would have missed this reply of yours under normal circumstances, if you had retained the CC: list I would have read it via my non-lkml account and therefore not have missed it. ]
On Mon, 2003-06-30 at 22:47, H. Peter Anvin wrote: > Presumably only on architectures which use memory-mapped IO address > space.
On ones that don't we use the x86's existing facilities for doing this, ioperm() and direct I/O instructions.
These issues are platform dependant for other reasons anyways (endianness, barrier instructions needed, etc.)
But everything the most demanding testcase in userspace needs (this being xfree86) needs can be done with the existing facilities.
Unlike other people, I do not see the value in having 50 ways to do the same thing. :-)
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