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From: "David S. Miller" <davem@redhat.com>
To: Dan Malek <dan@mvista.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	linux-kernel@vger.kernel.org, linuxppc-dev@lists.linuxppc.org
Subject: Re: The IO problem on multiple PCI busses
Date: Thu, 1 Mar 2001 12:22:36 -0800 (PST)	[thread overview]
Message-ID: <15006.44940.12004.57998@pizda.ninka.net> (raw)
In-Reply-To: <3A9EAA2F.7C89C88@mvista.com>
In-Reply-To: <19350124090521.18330@mailhost.mipsys.com> <15006.40524.929644.25622@pizda.ninka.net> <3A9EA3FA.1A86893B@mvista.com> <15006.42475.79484.578530@pizda.ninka.net> <3A9EAA2F.7C89C88@mvista.com>


Dan Malek writes:
 > It actually caused me to think of something else....I have cards
 > with multiple memory and I/O spaces (rare, but I have them).

So what?  All such bar's within mem/io space are part of unique
regions of the total MEM/IO space.

Thus you can pass non-conflicting offset/size pairs, based upon the
BAR value of interest, to mmap and everything is fine.

Later,
David S. Miller
davem@redhat.com

  parent reply	other threads:[~2001-03-01 20:26 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-03-01 15:33 Benjamin Herrenschmidt
2001-03-01 15:41 ` Benjamin Herrenschmidt
2001-03-01 18:30 ` Alan Cox
2001-03-01 19:09 ` David S. Miller
2001-03-01 19:33   ` Dan Malek
2001-03-01 19:41   ` David S. Miller
2001-03-01 19:59     ` Dan Malek
2001-03-01 20:09     ` Benjamin Herrenschmidt
2001-03-01 20:22     ` David S. Miller [this message]
2001-03-01 20:27     ` David S. Miller
2001-03-02 11:25       ` Benjamin Herrenschmidt
2001-03-03  1:08       ` David S. Miller
2001-03-01 19:49   ` Benjamin Herrenschmidt
2001-03-01 20:21   ` David S. Miller
2001-03-01 22:26     ` Alan Cox
2001-03-02 11:20     ` Benjamin Herrenschmidt
2001-03-03  1:06     ` David S. Miller
2001-03-03  2:25       ` Benjamin Herrenschmidt
2001-03-03 11:01         ` Jeff Garzik
2001-03-03 17:28           ` Benjamin Herrenschmidt
2001-03-05 16:20         ` David Woodhouse
2001-03-06 23:01       ` Oliver Xymoron
2001-03-07  2:07       ` Tony Mantler
2001-03-05 23:21   ` Chris Wedgwood
2001-03-02  1:22 Grant Grundler
2001-03-02  2:19 ` David S. Miller
2001-03-02 17:46   ` Grant Grundler

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