linux-kernel - Re: [PATCH] use proper address translation functions in Dell RBU

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Message-ID: <20091120140722.6c579cac@lxorguk.ukuu.org.uk>
Date:	Fri, 20 Nov 2009 14:07:22 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	"Jan Beulich" <JBeulich@...ell.com>
Cc:	<Douglas_Warzecha@...l.com>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] use proper address translation functions in Dell RBU

On Fri, 20 Nov 2009 13:46:46 +0000
"Jan Beulich" <JBeulich@...ell.com> wrote:

> virt_to_bus() ought to be used (in particular for Xen compatibility).

This seems a bit odd - the addresses are memory physical addresses and
are accessed by the firmware not by external device logic. So I think
this is a Xen bug, the kernel code appears to be correct.

Alan


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