From: David Miller <davem@davemloft.net>
To: paulus@samba.org
Cc: hskinnemoen@gmail.com, haveblue@us.ibm.com,
hskinnemoen@atmel.com, linux-arch@vger.kernel.org
Subject: Re: [RFC] Generic ioremap_page_range
Date: Mon, 07 Aug 2006 00:21:34 -0700 (PDT) [thread overview]
Message-ID: <20060807.002134.122617142.davem@davemloft.net> (raw)
In-Reply-To: <17622.58971.782729.588902@cargo.ozlabs.ibm.com>
From: Paul Mackerras <paulus@samba.org>
Date: Mon, 7 Aug 2006 17:06:03 +1000
> Håvard Skinnemoen writes:
>
> > So far, I've only seen static flags. And I really can't think of a
> > reason to set the flags dynamically...
>
> The reason would be to select what sort of caching is allowed for the
> mapping, and whether write-combining is allowed, on architectures
> (such as PowerPC) where those choices are made by bits in the PTEs.
Things work similarly on sparc64.
next prev parent reply other threads:[~2006-08-07 7:21 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20060713224800.6cbdbf5d.akpm@osdl.org>
[not found] ` <1152892123.24925.67.camel@localhost.localdomain>
2006-08-04 7:47 ` [RFC] Generic ioremap_page_range Haavard Skinnemoen
2006-08-04 17:18 ` Dave Hansen
2006-08-04 18:44 ` Håvard Skinnemoen
2006-08-07 7:06 ` Paul Mackerras
2006-08-07 7:21 ` David Miller [this message]
2006-08-04 23:40 ` Paul Mackerras
2006-08-05 0:13 ` David Miller
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