lkml.org 
[lkml]   [2003]   [Jul]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: PCI domain stuff
David S. Miller wrote:
> [ 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. ]

Unfortunately, I can't, because I never see it. One of the very few
disadvantages with reading LKML via a newsreader.

> 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.)

Right. As long as this is clear to people; I'm not sure it always is.

Perhaps a libdirectio would be useful?

> 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. :-)

Agreed with that, *as long as* the implementation is sane.

-hpa

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:46    [W:0.031 / U:1.332 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site