linux-kernel - Re: [PATCH 09/22] ARM: LPAE: use 64-bit pgd physical address in switch

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Message-ID: <alpine.LFD.2.02.1208040259200.5231@xanadu.home>
Date:	Sat, 4 Aug 2012 03:04:56 -0400 (EDT)
From:	Nicolas Pitre <nicolas.pitre@...aro.org>
To:	Cyril Chemparathy <cyril@...com>
cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	arnd@...db.de, catalin.marinas@....com, linux@....linux.org.uk,
	will.deacon@....com, Vitaly Andrianov <vitalya@...com>
Subject: Re: [PATCH 09/22] ARM: LPAE: use 64-bit pgd physical address in
 switch_mm()

On Tue, 31 Jul 2012, Cyril Chemparathy wrote:

> This patch modifies the switch_mm() processor functions to use 64-bit
> addresses.  We use u64 instead of phys_addr_t, in order to avoid having config
> dependent register usage when calling into switch_mm assembly code.
> 
> The changes in this patch are primarily adjustments for registers used for
> arguments to switch_mm.  The few processor definitions that did use the second
> argument have been modified accordingly.
> 
> Arguments and calling conventions aside, this patch should be a no-op on v6
> and non-LPAE v7 processors. 

NAK.

You just broke all big endian targets, LPAE or not.


Nicolas
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