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

[Cyril Chemparathy]

Hi Catalin,

On 7/24/2012 5:41 AM, Catalin Marinas wrote:
> On Tue, Jul 24, 2012 at 02:09:03AM +0100, Cyril Chemparathy wrote:
> > From: Vitaly Andrianov <vitalya@xxxxxx>
> >
> > 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?

At boot time PHYS_OFFSET is 0x80000000, in the low 4G range. 
Subsequently we switch over to the high PHYS_OFFSET at 0x800000000 (see 
patch 23/23 of this series).

--
Thanks
- Cyril
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