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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 26 Feb 2016 09:47:21 +0000
From:	Will Deacon <will.deacon@....com>
To:	miles.chen@...iatek.com
Cc:	Catalin Marinas <catalin.marinas@....com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	srv_wsdupstream@...iatek.com, linux-mediatek@...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>
> ---
>  arch/arm64/mm/init.c | 2 --
>  1 file changed, 2 deletions(-)

Acked-by: Will Deacon <will.deacon@....com>

Will