linux-kernel - Re: [PATCH 4/5] x86: add executable mapping support to ioremap

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Message-ID: <alpine.LFD.1.00.0801311732420.9204@apollo.tec.linutronix.de>
Date:	Thu, 31 Jan 2008 17:37:05 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Andi Kleen <ak@...e.de>
cc:	huang ying <huang.ying.caritas@...il.com>,
	"Huang, Ying" <ying.huang@...el.com>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/5] x86: add executable mapping support to ioremap

On Thu, 31 Jan 2008, Andi Kleen wrote:

> > There is nothing to fix. It works on virtual addresses. 
> > 
> > The __pa() in change_page_attr_addr() is only used to check for the
> > high alias mapping of the kernel, but the call to change_page_attr
> > uses the virtual address.
> 
> But __pa() doesn't work for ioremap ...

If it does not, then __pa() needs to be fixed, nothing else.

Thanks,
	tglx
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