From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 60CC1C433E6 for ; Mon, 18 Jan 2021 06:16:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 35EF62251F for ; Mon, 18 Jan 2021 06:16:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730151AbhARGQJ (ORCPT ); Mon, 18 Jan 2021 01:16:09 -0500 Received: from m43-15.mailgun.net ([69.72.43.15]:33000 "EHLO m43-15.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729825AbhARGQF (ORCPT ); Mon, 18 Jan 2021 01:16:05 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1610950542; h=Message-ID: References: In-Reply-To: Subject: Cc: To: From: Date: Content-Transfer-Encoding: Content-Type: MIME-Version: Sender; bh=A8wI3RTGCyles0FltZDIkYEHIfDYCgkxz4YJBJIsSfk=; b=YFKj5gW3cJpnj70JK2rqamejicWbqOwz57uhA6DNbcx0WAucdaot0krPASVKnQP6ED1MIFLY +gNmdCznozcivJPvGMOjOVEmhCY5pDZjRrw7301vKlIZWBO+g3EYN4YG8EBmXDKT1oAgHqx/ UgWBdwHrnZXAn8GWTPYYsFxIdpE= X-Mailgun-Sending-Ip: 69.72.43.15 X-Mailgun-Sid: WyJkN2ViYyIsICJsaW51eC1zZWN1cml0eS1tb2R1bGVAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n03.prod.us-west-2.postgun.com with SMTP id 6005276e7086580d32248cf0 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Mon, 18 Jan 2021 06:15:10 GMT Sender: pnagar=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 035E9C433C6; Mon, 18 Jan 2021 06:15:10 +0000 (UTC) Received: from mail.codeaurora.org (localhost.localdomain [127.0.0.1]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: pnagar) by smtp.codeaurora.org (Postfix) with ESMTPSA id 6FFC4C433CA; Mon, 18 Jan 2021 06:15:08 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Mon, 18 Jan 2021 11:45:08 +0530 From: pnagar@codeaurora.org To: David Howells Cc: Casey Schaufler , arnd@arndb.de, jmorris@namei.org, serge@hallyn.com, paul@paul-moore.com, stephen.smalley.work@gmail.com, eparis@parisplace.org, linux-security-module@vger.kernel.org, selinux@vger.kernel.org, linux-arch@vger.kernel.org, psodagud@codeaurora.org, nmardana@codeaurora.org, dsule@codeaurora.org, Joe Perches , Miguel Ojeda , Nick Desaulniers , linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH v2] selinux: security: Move selinux_state to a separate page In-Reply-To: <2646561.1610535404@warthog.procyon.org.uk> References: <1610099389-28329-1-git-send-email-pnagar@codeaurora.org> <0f467390-e018-6051-0014-ab475ed76863@schaufler-ca.com> <2646561.1610535404@warthog.procyon.org.uk> Message-ID: <87b4c1b961fcd94c6e34ab314e2c1dff@codeaurora.org> X-Sender: pnagar@codeaurora.org User-Agent: Roundcube Webmail/1.3.9 Precedence: bulk List-ID: On 2021-01-13 16:26, David Howells wrote: > Casey Schaufler wrote: > >> >> How would this interact with or complement __read_mostly? >> >> >> > Currently, the mechanism we are working on developing is >> > independent of __read_mostly. This is something we can look more into >> > while working further on the mechanism. >> >> Please either integrate the two or explain how they differ. >> It appears that you haven't considered how you might exploit >> or expand the existing mechanism. > > I think __read_mostly is about grouping stuff together that's rarely > going to > be read to make the CPU's data cache more efficient. It doesn't stop > people > writing to such a variable. > > David Thank you for sharing!