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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 27D36C43142 for ; Wed, 27 Jun 2018 09:35:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B334F26244 for ; Wed, 27 Jun 2018 09:35:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="tVyyYKsS" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B334F26244 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753357AbeF0JfC (ORCPT ); Wed, 27 Jun 2018 05:35:02 -0400 Received: from mail-it0-f51.google.com ([209.85.214.51]:56010 "EHLO mail-it0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752565AbeF0JfB (ORCPT ); Wed, 27 Jun 2018 05:35:01 -0400 Received: by mail-it0-f51.google.com with SMTP id 16-v6so6545293itl.5 for ; Wed, 27 Jun 2018 02:35:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=to:from:subject:message-id:date:user-agent:mime-version :content-language:content-transfer-encoding; bh=mLc3ztpTgvfMtXeXhuqoEF2Oxv8BBcSdyiDY5wFaJ4E=; b=tVyyYKsSnCXTgZqBAgrZC/6SoaOmQ0waDUQuNDOvDjerxqhMLrNwuCD09sxdTSyXFl nBUpT6sebTMBoevQqGtJeANkyq3/GPPpYEgL1AYTg/B51YpzQZGjUdhauMb/717qB2Po 7dRROLyYpXZZ3Qp6nYSjnPASxB58U0dRenLYCDlV/wcM+S/zGdxXmP+Lnmey41TrRDXX gEabxkfGzSJkkPYkelMv9AYWje03+VmZedvcUlhznlT+BhQkNdOdf7QtKqFWA6ZAQXj8 ODak/pSoxcXsWqL7iaCbOlBS2EKIhDYdkirvPD4zeqFJXF/7XeVmXsgeBdNr1mRQu2LT yRew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:from:subject:message-id:date:user-agent :mime-version:content-language:content-transfer-encoding; bh=mLc3ztpTgvfMtXeXhuqoEF2Oxv8BBcSdyiDY5wFaJ4E=; b=aalr/uyCSeLry3ovv+lpsiij36rsBWR824icDHC3iS2IgCo4LMeM+L/VTRvxwoTPbP L4uqbQjyAiIno9IQDZg3rFNqERt43GZFHOgIeqdiQZM3ZIP5sa5mCrFF6UEzvOjkfoyS dW95F7SgYehCPmphM22PU6G7e0xL2Q0RwD1UO6HniFrVi2M5aQs+1ZqqQaMIf9hFCJzB jYD3jyqzeX9dXA+4hEe7aza8CCzVZeb3CYddTOxlnoyw65HWcS62klPG31nGp8v9wYN8 B7Bbh1Mz8Qiw/6hUW+7FgcgjsNKZswAOYzUVGIKM1zXxMJDusegrmhsnbD4Wy0f7uf/W RNLQ== X-Gm-Message-State: APt69E13qEFGHiKaUXjSnnJLV2g8S2h4Zu7UKmwmd7xtTJWmOtX9e7J1 JB/QmfxQkeDeFfGMENpBO6zApric X-Google-Smtp-Source: AAOMgpdgB2PWdIV/2y4nC7Kh+rKFZ9H9s64HuLbMBCcJrKFwLPWJoZbpuDGEkGYPhHTIdwDgQdG4WQ== X-Received: by 2002:a24:db42:: with SMTP id c63-v6mr4114723itg.49.1530092100167; Wed, 27 Jun 2018 02:35:00 -0700 (PDT) Received: from [192.168.1.196] (c-69-180-151-171.hsd1.mn.comcast.net. [69.180.151.171]) by smtp.gmail.com with ESMTPSA id w139-v6sm2943255iow.61.2018.06.27.02.34.58 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 27 Jun 2018 02:34:59 -0700 (PDT) To: Linux Kernel Mailing List From: Jefferson Carpenter Subject: Memory zeroed when made available to user process Message-ID: <71d13d76-4591-9206-ebbb-5e9599f10c7c@gmail.com> Date: Wed, 27 Jun 2018 09:34:51 +0000 User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Is there a way for a user process to mark memory as 'sensitive' or 'non-sensitive' when it is allocated? That could allow it not to have to be zeroed before being allocated to another process.