From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: davidm@hpl.hp.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: ioremap() vs. ioremap_nocache()
Date: Thu, 4 Oct 2001 21:47:52 +0100 (BST) [thread overview]
Message-ID: <E15pFPM-00044b-00@the-village.bc.nu> (raw)
In-Reply-To: <200110040029.f940Tn103671@wailua.hpl.hp.com> from "David Mosberger" at Oct 03, 2001 05:29:49 PM
> Now, as far as I know, on x86, ioremap() will give write-through
> cached mappings (in the absence of mtrr games). If this is true, how
On x86 ioremap will give mappings appropriate to the object you map - which
means by default it wil give uncached mappings. The PCI hardware will do
intelligent things in certain cases such as write merging
Alan
next prev parent reply other threads:[~2001-10-04 20:42 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-04 0:29 David Mosberger
2001-10-04 20:47 ` Alan Cox [this message]
2001-10-05 14:12 ` Jes Sorensen
2001-10-05 14:39 ` Alan Cox
[not found] <E15pXGL-0006n6-00@the-village.bc.nu>
[not found] ` <15293.54409.884529.251159@napali.hpl.hp.com>
2001-10-05 16:08 ` David Mosberger
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