From mboxrd@z Thu Jan 1 00:00:00 1970 From: Catalin Marinas Subject: Re: [PATCH] arm64/mm: remove unnecessary boundary check Date: Fri, 26 Feb 2016 13:40:33 +0000 Message-ID: <20160226134033.GK4777@e104818-lin.cambridge.arm.com> References: <1456371874-19826-1-git-send-email-miles.chen@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <1456371874-19826-1-git-send-email-miles.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+glpam-linux-mediatek=m.gmane.org-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org To: miles.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org Cc: srv_wsdupstream-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org, linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Will Deacon , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: linux-mediatek@lists.infradead.org On Thu, Feb 25, 2016 at 11:44:34AM +0800, miles.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org wrote: > From: Miles Chen > > 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 Applied. Thanks. -- Catalin