linux-kernel - Re: [RFC 01/23] ARM: LPAE: disable phys-to-virt patching on PAE systems

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Message-ID: <20120724094143.GB20132@arm.com>
Date:	Tue, 24 Jul 2012 10:41:43 +0100
From:	Catalin Marinas <catalin.marinas@....com>
To:	Cyril Chemparathy <cyril@...com>
Cc:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"nico@...aro.org" <nico@...aro.org>,
	Will Deacon <Will.Deacon@....com>,
	Vitaly Andrianov <vitalya@...com>
Subject: Re: [RFC 01/23] ARM: LPAE: disable phys-to-virt patching on PAE
 systems

On Tue, Jul 24, 2012 at 02:09:03AM +0100, Cyril Chemparathy wrote:
> From: Vitaly Andrianov <vitalya@...com>
> 
> The current phys-to-virt patching mechanism is broken on PAE machines with
> 64-bit physical addressing.  This patch disables the patching mechanism in
> such configurations.

It may be broken, I don't remember whether I tested this feature. What's
the PHYS_OFFSET on your platform? Is it within the low 4GB range?

-- 
Catalin
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