From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oleg Nesterov Subject: Re: [PATCH v8 5/9] seccomp: split mode set routines Date: Wed, 25 Jun 2014 19:32:45 +0200 Message-ID: <20140625173245.GA17695@redhat.com> References: <1403642893-23107-1-git-send-email-keescook@chromium.org> <1403642893-23107-6-git-send-email-keescook@chromium.org> <20140625135121.GB7892@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-subscribe: List-owner: List-post: List-archive: To: Andy Lutomirski Cc: Kees Cook , LKML , "Michael Kerrisk (man-pages)" , Alexei Starovoitov , Andrew Morton , Daniel Borkmann , Will Drewry , Julien Tinnes , David Drysdale , Linux API , "x86@kernel.org" , "linux-arm-kernel@lists.infradead.org" , linux-mips@linux-mips.org, linux-arch , linux-security-module List-Id: linux-arch.vger.kernel.org On 06/25, Andy Lutomirski wrote: > > Write the filter, then smp_mb (or maybe a weaker barrier is okay), > then set the bit. Yes, exactly, this is what I meant. Plas rmb() in __secure_computing(). But I still can't understand the rest of your discussion about the ordering we need ;) Oleg. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:43620 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757444AbaFYRe0 (ORCPT ); Wed, 25 Jun 2014 13:34:26 -0400 Date: Wed, 25 Jun 2014 19:32:45 +0200 From: Oleg Nesterov Subject: Re: [PATCH v8 5/9] seccomp: split mode set routines Message-ID: <20140625173245.GA17695@redhat.com> References: <1403642893-23107-1-git-send-email-keescook@chromium.org> <1403642893-23107-6-git-send-email-keescook@chromium.org> <20140625135121.GB7892@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-arch-owner@vger.kernel.org List-ID: To: Andy Lutomirski Cc: Kees Cook , LKML , "Michael Kerrisk (man-pages)" , Alexei Starovoitov , Andrew Morton , Daniel Borkmann , Will Drewry , Julien Tinnes , David Drysdale , Linux API , "x86@kernel.org" , "linux-arm-kernel@lists.infradead.org" , linux-mips@linux-mips.org, linux-arch , linux-security-module Message-ID: <20140625173245.VsRlqsVRyMcQbNb6qv1s9kcyrBjur3D9jMQuwQF-Hi0@z> On 06/25, Andy Lutomirski wrote: > > Write the filter, then smp_mb (or maybe a weaker barrier is okay), > then set the bit. Yes, exactly, this is what I meant. Plas rmb() in __secure_computing(). But I still can't understand the rest of your discussion about the ordering we need ;) Oleg.