From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 42836 invoked by alias); 19 Mar 2018 15:33:05 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Received: (qmail 42740 invoked by uid 89); 19 Mar 2018 15:33:04 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.1 required=5.0 tests=AWL,BAYES_00,KAM_LAZY_DOMAIN_SECURITY,T_RP_MATCHES_RCVD autolearn=no version=3.3.2 spammy= X-HELO: mx1.redhat.com Subject: Re: [PATCH] Fix i386 memmove issue [BZ #22644] To: Szabolcs Nagy , Andreas Schwab , Andrew Senkevich Cc: nd@arm.com, "H.J. Lu" , libc-alpha , Max Horn , thomas@grindinggear.com References: <597954a1-85da-e524-1454-27c46af57413@redhat.com> From: Florian Weimer Message-ID: <8c8ab285-bddc-90e6-a50e-7be89703367a@redhat.com> Date: Mon, 19 Mar 2018 15:33:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-SW-Source: 2018-03/txt/msg00457.txt.bz2 On 03/19/2018 03:25 PM, Szabolcs Nagy wrote: > i thought not using MAP_FIXED is the 'non-overriding MAP_FIXED variant' In general, yes. But I think there cases where the hint is ignored even if there isn't a pre-existing mapping. Maybe mapping things at the middle of the (32-bit) address space is one such case? Thanks, Florian