linux-kernel - Re: ioremap_xxx() with EXEC enabled

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Message-ID: <20080130074540.031b6799@laptopd505.fenrus.org>
Date:	Wed, 30 Jan 2008 07:45:40 -0800
From:	Arjan van de Ven <arjan@...radead.org>
To:	"Huang, Ying" <ying.huang@...el.com>
Cc:	Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>, Andi Kleen <ak@...e.de>,
	linux-kernel@...r.kernel.org
Subject: Re: ioremap_xxx() with EXEC enabled

On Wed, 30 Jan 2008 17:32:10 +0800
"Huang, Ying" <ying.huang@...el.com> wrote:

> Hi,
> 
> On i386, EFI may need to map EFI runtime code area as EXEC enabled
> with ioremap(). But, I found that the memory are mapped as EXEC
> disabled when mapped with ioremap() now. I think we may need a method
> to map memory area as EXEC enabled with ioremap_xxx(). Some possible
> interface schemes for mapping as EXEC enabled are as follow:
> 
> - Interface scheme 1:

scheme 3:

set_memory_x(... )
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