From: David Miller <davem@davemloft.net>
To: dwmw2@infradead.org
Cc: torvalds@linux-foundation.org, alan@lxorguk.ukuu.org.uk,
jgarzik@pobox.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] libata-sff: Don't call bmdma_stop on non DMA capable controllers
Date: Fri, 26 Jan 2007 00:20:20 -0800 (PST) [thread overview]
Message-ID: <20070126.002020.48528097.davem@davemloft.net> (raw)
In-Reply-To: <1169788181.3593.250.camel@shinybook.infradead.org>
From: David Woodhouse <dwmw2@infradead.org>
Date: Fri, 26 Jan 2007 13:09:40 +0800
> My question was about _how_ you think this should be achieved in this
> particular case. You didn't like the suggestion that we should put your
> new special-case hack into the resource code... where/how _do_ you
> suggest that it's done, so that we can protect those poor driver authors
> from the number zero?
Just set some high bit in the arch code that creates the resources,
then when you interpret them in arch code simply clear the bit.
That's effectively what happens on sparc64 since all non-memory
physical addressing occurs at the top of the physical address
space. But you don't need that layout, you can fake it.
next prev parent reply other threads:[~2007-01-26 8:20 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-25 15:09 [PATCH] libata-sff: Don't call bmdma_stop on non DMA capable controllers Alan
2007-01-25 16:14 ` David Woodhouse
2007-01-25 16:17 ` Jeff Garzik
2007-01-25 16:19 ` David Woodhouse
2007-01-25 16:22 ` Russell King
2007-01-25 16:26 ` David Woodhouse
2007-01-25 17:27 ` Alan
2007-01-25 17:56 ` Linus Torvalds
2007-01-26 0:23 ` David Woodhouse
2007-01-26 1:28 ` Linus Torvalds
2007-01-26 1:45 ` Jeff Garzik
2007-01-26 2:01 ` Linus Torvalds
2007-01-26 2:11 ` Jeff Garzik
2007-01-26 10:37 ` Alan
2007-01-28 23:01 ` Benjamin Herrenschmidt
2007-01-28 22:57 ` Benjamin Herrenschmidt
2007-01-26 2:23 ` David Woodhouse
2007-01-26 2:58 ` Linus Torvalds
2007-01-26 3:28 ` David Woodhouse
2007-01-26 4:00 ` Linus Torvalds
2007-01-26 4:19 ` David Woodhouse
2007-01-26 4:48 ` Linus Torvalds
2007-01-26 5:09 ` David Woodhouse
2007-01-26 6:01 ` Linus Torvalds
2007-01-26 6:18 ` Linus Torvalds
2007-01-26 8:17 ` David Miller
2007-01-26 8:20 ` David Miller [this message]
2007-01-26 4:53 ` Jeff Garzik
2007-01-26 15:32 ` Mark Lord
2007-01-26 15:29 ` Mark Lord
2007-01-28 23:04 ` Benjamin Herrenschmidt
2007-01-28 22:49 ` Benjamin Herrenschmidt
2007-01-25 23:36 ` Jeff Garzik
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