linux-kernel - Re: [PATCH] xen: introduce xen_remap, use it instead of ioremap

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Message-ID: <1361359073.23294.6.camel@zakaz.uk.xensource.com>
Date:	Wed, 20 Feb 2013 11:17:53 +0000
From:	Ian Campbell <Ian.Campbell@...rix.com>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>
CC:	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] xen: introduce xen_remap, use it instead of ioremap

On Tue, 2013-02-19 at 13:59 +0000, Stefano Stabellini wrote:
> ioremap can't be used to map ring pages on ARM because it uses device
> memory caching attributes (MT_DEVICE*).
> 
> Introduce a Xen specific abstraction to map ring pages, called
> xen_remap, that is defined as ioremap on x86 (no behavioral changes).
> On ARM it explicitly calls __arm_ioremap with the right caching
> attributes: MT_MEMORY.
> 
> Signed-off-by: Stefano Stabellini <stefano.stabellini@...citrix.com>

Acked-by: Ian Campbell <ian.campbell@...rix.com>

If you were respinning for any reason I might suggest
s/xen_remap/xen_map_shared/ or something of that nature.

Ian.

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