From: Jens Axboe <axboe@suse.de>
To: Pierre Ossman <drzeus-list@drzeus.cx>
Cc: Russell King <rmk+lkml@arm.linux.org.uk>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: How to map high memory for block io
Date: Fri, 27 Jan 2006 15:00:31 +0100 [thread overview]
Message-ID: <20060127140030.GL4311@suse.de> (raw)
In-Reply-To: <43DA24A0.70004@drzeus.cx>
On Fri, Jan 27 2006, Pierre Ossman wrote:
> Pierre Ossman wrote:
> >
> > Doesn't seem like a generic solution is easily implemented. I'll start
> > hacking together some way of specifying that highmem isn't supported so
> > that mmc_block can indicate this to the block layer.
> >
>
> If I set the limit to BLK_BOUNCE_HIGH then (page_address(sg->page) +
> sg->offset) is guaranteed to be directly accessible for the entire
> sg->length on all architectures, right? This seems to be the assumption
> in the USB ub driver at least.
Yes, hence my initial suggestion to just do that.
--
Jens Axboe
next prev parent reply other threads:[~2006-01-27 13:58 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-27 6:45 How to map high memory for block io Pierre Ossman
2006-01-27 10:26 ` Jens Axboe
2006-01-27 10:33 ` Pierre Ossman
2006-01-27 10:43 ` Jens Axboe
2006-01-27 12:14 ` Pierre Ossman
2006-01-27 12:39 ` Jens Axboe
2006-01-27 13:16 ` Pierre Ossman
2006-01-27 13:48 ` Pierre Ossman
2006-01-27 14:00 ` Jens Axboe [this message]
2006-01-27 14:14 ` Pierre Ossman
2006-01-27 18:37 ` Pierre Ossman
2006-01-27 19:43 ` Russell King
2006-01-27 20:04 ` Pierre Ossman
2006-01-27 20:10 ` Jens Axboe
2006-01-27 20:14 ` Russell King
2006-01-27 20:22 ` Jens Axboe
2006-01-27 20:26 ` Russell King
2006-01-27 20:38 ` Pierre Ossman
2006-01-27 21:58 ` Pierre Ossman
2006-01-27 22:54 ` Russell King
2006-01-28 19:17 ` Jens Axboe
2006-01-28 19:32 ` Pierre Ossman
2006-01-29 15:22 ` Jens Axboe
2006-01-30 7:57 ` Pierre Ossman
2006-01-30 8:09 ` Jens Axboe
2006-01-31 18:39 ` Pierre Ossman
2006-03-01 23:29 ` Russell King
2006-03-02 7:21 ` Jens Axboe
2006-03-02 7:26 ` Pierre Ossman
2006-03-02 9:41 ` Russell King
2006-03-02 9:52 ` Pierre Ossman
2006-03-02 10:04 ` Russell King
2006-03-02 10:26 ` Pierre Ossman
2006-03-02 11:45 ` Russell King
2007-01-30 20:41 ` Pierre Ossman
2006-01-27 20:28 ` Pierre Ossman
2006-01-27 20:12 ` Pierre Ossman
2006-01-27 20:16 ` Russell King
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