From: "David S. Miller" <davem@redhat.com>
To: kanoj@google.engr.sgi.com
Cc: alan@lxorguk.ukuu.org.uk, sct@redhat.com, roman@augan.com,
linux-mm@kvack.org, linux-kernel@vger.rutgers.edu,
rmk@arm.linux.org.uk, nico@cam.org, davidm@hpl.hp.com
Subject: Re: pte_pagenr/MAP_NR deleted in pre6
Date: Thu, 17 Aug 2000 12:41:52 -0700 [thread overview]
Message-ID: <200008171941.MAA24042@pizda.ninka.net> (raw)
In-Reply-To: <200008171950.MAA45378@google.engr.sgi.com> (message from Kanoj Sarcar on Thu, 17 Aug 2000 12:50:40 -0700 (PDT))
So, unlike system vendors adding in dma mapping registers for PCI32
devices to dma anywhere into their >32 bit physical address space, you
are assuming no vendor will ever have a mapping scheme for ISA devices
that let them get over the 16MB mark?
ISA is a dead hardware technology and therefore how it works is pretty
much fixed in stone.
Perhaps some older MIPS machines supporting ISA could benefit from
an API similar to the PCI dma stuff, as Alan mentioned. But that is
the only case which has any merit in my mind.
Later,
David S. Miller
davem@redhat.com
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next prev parent reply other threads:[~2000-08-17 19:41 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-08-10 17:18 Kanoj Sarcar
2000-08-11 2:24 ` David S. Miller
2000-08-14 0:34 ` Anton Blanchard
2000-08-11 11:50 ` Roman Zippel
2000-08-11 13:20 ` Russell King
2000-08-11 14:56 ` Roman Zippel
2000-08-12 9:18 ` Bjorn Wesen
2000-08-11 17:21 ` Kanoj Sarcar
2000-08-14 9:29 ` Roman Zippel
2000-08-15 16:19 ` Stephen C. Tweedie
2000-08-16 8:25 ` Roman Zippel
2000-08-16 17:13 ` Kanoj Sarcar
2000-08-16 18:20 ` Stephen C. Tweedie
2000-08-16 18:24 ` David S. Miller
2000-08-16 19:53 ` Stephen C. Tweedie
2000-08-16 18:47 ` Kanoj Sarcar
2000-08-16 18:39 ` David S. Miller
2000-08-16 19:30 ` Stephen C. Tweedie
2000-08-16 22:22 ` Kanoj Sarcar
2000-08-17 9:11 ` Stephen C. Tweedie
2000-08-17 19:07 ` Kanoj Sarcar
2000-08-17 19:01 ` David S. Miller
2000-08-17 19:19 ` Alan Cox
2000-08-17 19:20 ` David S. Miller
2000-08-17 19:33 ` Alan Cox
2000-08-17 19:36 ` Kanoj Sarcar
2000-09-07 14:31 ` Ralf Baechle
2000-08-17 19:50 ` Kanoj Sarcar
2000-08-17 19:41 ` David S. Miller [this message]
2000-09-07 14:26 ` Ralf Baechle
2000-08-17 19:56 ` Alan Cox
2000-08-17 19:24 ` Alan Cox
2000-08-17 19:32 ` Kanoj Sarcar
2000-08-17 19:30 ` David S. Miller
2000-08-17 20:00 ` Kanoj Sarcar
2000-08-16 18:17 ` Stephen C. Tweedie
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