linux-kernel - Re: [PATCH] arm64/mm: remove unnecessary boundary check

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Message-ID: <20160226134033.GK4777@e104818-lin.cambridge.arm.com>
Date:	Fri, 26 Feb 2016 13:40:33 +0000
From:	Catalin Marinas <catalin.marinas@....com>
To:	miles.chen@...iatek.com
Cc:	Will Deacon <will.deacon@....com>, srv_wsdupstream@...iatek.com,
	linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] arm64/mm: remove unnecessary boundary check

On Thu, Feb 25, 2016 at 11:44:34AM +0800, miles.chen@...iatek.com wrote:
> From: Miles Chen <miles.chen@...iatek.com>
> 
> Remove the unnecessary boundary check since there is a huge
> gap between user and kernel address that they would never overlap.
> (arm64 does not have enough levels of page tables to cover 64-bit
> virtual address)
> 
> See Documentation/arm64/memory.txt
> 
> Signed-off-by: Miles Chen <miles.chen@...iatek.com>

Applied. Thanks.

-- 
Catalin