linux-kernel - Re: [RFC PATCH 06/12] PAT 64b: Add ioremap

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Message-ID: <ada4pel7v6a.fsf@cisco.com>
Date:	Thu, 13 Dec 2007 20:32:45 -0800
From:	Roland Dreier <rdreier@...co.com>
To:	ebiederm@...ssion.com (Eric W. Biederman)
Cc:	venkatesh.pallipadi@...el.com, ak@....de,
	torvalds@...ux-foundation.org, gregkh@...e.de, airlied@...net.ie,
	davej@...hat.com, mingo@...e.hu, tglx@...utronix.de, hpa@...or.com,
	akpm@...ux-foundation.org, arjan@...radead.org,
	jesse.barnes@...el.com, linux-kernel@...r.kernel.org,
	Suresh Siddha <suresh.b.siddha@...el.com>
Subject: Re: [RFC PATCH 06/12] PAT 64b: Add ioremap_wc support

 > > Also I didn't see anything like pgprot_wc() in the patchset (although

 > pgprot_writcombined.

Oh I see it now (pgprot_writecombine() actually).

However the same comment as before applies: there needs to be a
fallback to pgprot_noncached() for all other architectures so that
drivers can actually use it in a sane way.

 - R.
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