Received: by 10.213.65.68 with SMTP id h4csp3766171imn; Tue, 10 Apr 2018 04:30:01 -0700 (PDT) X-Google-Smtp-Source: AIpwx4/f6db1VVzofIhM3ivv6YGlygL+Gk0unjHVhme/wpFYc7XYy13uuZTKJwCDmLsheIO+9PxZ X-Received: by 2002:a17:902:43e4:: with SMTP id j91-v6mr16673pld.118.1523359801443; Tue, 10 Apr 2018 04:30:01 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1523359801; cv=none; d=google.com; s=arc-20160816; b=WAv+QDXS7I0vluIaHDAml0DUU6xIwgeHJKFo0XswH8P2lbdx+ODLGKpkSfqCwibdyE K1B4PKl36QjL+dmSj73Mvdau4/Sus7y6MZCX8LNjCg0RYaauR0sWtWYXEnySG3zAAs+H IUWMOOSYiDqN3yui0wsphQSKzTei09PdLJnKzjjxPwjly5IEPJ/328Xqg3tVLymY/mbe 2CSZYeydJYv1s3SVdlbU/I+b/d5KpgVsLJRW+t5c8xnrkfvEqCvpGFtOKdH/cab4Edsi gL5zz0fYD4UFVz1et/lIgXXcrsZOBAVr8xQNZAi4LFaRfPdWEZrlEznLU4UnI6u43V5x DEpg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:cc:to:subject:message-id:date:from :references:in-reply-to:mime-version:dkim-signature:dkim-signature :arc-authentication-results; bh=k3PlbSDWv6jGtpA88lrjIUQvV5howHbbXGnJOtTsWwc=; b=iiSyI0gANXsc+15PldtlbmP1dp0zym0S75akTsnxhpcnpaq6dPXjbnKIjCKNfCUAzt mCuTFK+hCYbAP08WaFdAydyXoXJL0/dqnCcVwgr96eqQQA54Auf0QYeGFZ+p5PCr6I6h quHT1OL6H/Ro8HVtxiWwEvXoEBjK9XHrHkJdqOyiu7GAKYtG4zUZmiQqf78mX6r9/5gI dMVNKQxqtqrpD8wfVcOJnZ2wSotCyIIU1ESR4OgNZkCy6FzFQANrpJHau5p2dcvUbXba SNEV2U/mxqc7ySjjCEUHNdGkr4I3NrEs7BqbCMKvVwDMAm81z5fpaodvCXhJMIWExOoD kQdw== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@google.com header.s=20161025 header.b=QKp4IoVx; dkim=fail header.i=@chromium.org header.s=google header.b=fjrjYHE+; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=chromium.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 1si1927398pfq.172.2018.04.10.04.29.23; Tue, 10 Apr 2018 04:30:01 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@google.com header.s=20161025 header.b=QKp4IoVx; dkim=fail header.i=@chromium.org header.s=google header.b=fjrjYHE+; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=chromium.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752354AbeDJHAH (ORCPT + 99 others); Tue, 10 Apr 2018 03:00:07 -0400 Received: from mail-vk0-f47.google.com ([209.85.213.47]:42220 "EHLO mail-vk0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752255AbeDJHAF (ORCPT ); Tue, 10 Apr 2018 03:00:05 -0400 Received: by mail-vk0-f47.google.com with SMTP id m72so6371301vkh.9 for ; Tue, 10 Apr 2018 00:00:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=k3PlbSDWv6jGtpA88lrjIUQvV5howHbbXGnJOtTsWwc=; b=QKp4IoVxg2Db7zKns/MgZYdR8HYbpMEZIAuShhqq8xrnJLcI2ORNLSctZlET5bjSx2 lvd9jCh7i74OYkdP+3tvzz/mbn0zbXIPL1mUNUCNoMoCJmBagqNxK1s0lraDB5mMdwr7 nQGXuZ1Z0U9URCMe39o1BsGFzmoie1HMjFfMpznx+txAiWWaSflEfNHZCXibko6WgT6l fzDqXKRFc/bUupqno3uEmxsfKNmJR6gLo3/ZX7kayVSVjwSw+FnyU+xCrmcFaIgzC0uF 5X0COQjZQuO4eBhCe8q3Xrj8cgQSC1xIQ4dE35XP0HGIUnLhL0BNH3BAFLCiJ98E7Tgh APMw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=k3PlbSDWv6jGtpA88lrjIUQvV5howHbbXGnJOtTsWwc=; b=fjrjYHE+57MIhNef4njSyA2U+3g9MqgqYcyeuR6lLoFZa/TYC2A35zcH9RPC8kXrnG KWqLwdBffZqV0cvvHz8SblbN3gc2BaCUbOfg+0J6rh8jEXnBIxo+Bsk7LBs5bszs5kkc u4tDf3FONlC5URtDyTTv2ZX6Utk2cYM8bcevQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=k3PlbSDWv6jGtpA88lrjIUQvV5howHbbXGnJOtTsWwc=; b=XS2IDd8nsbLOMPQmYSZygSwz9UhknBwb0fQ1L07/FttQ3feTVcx0qaRglcM+7mC3p8 jMoTcopn8sbiv2kCS0U8djuvmq3hD1VIcAG50H+ng79JdlmJbjfKX/vL+yOawrUr27ii 5dnsUmEXuijsRO06+0bdsZ3cK7wq3T5TkQtbEXcSyxPnsNt7Oa2CjwGwp/uvllx6LT7F 1luL90HH2Bf3SwAJAvwZBOogEqwKZEH0UfVgY2WnY3I8yYOvXbTNUZmNTvxU00R/GGnt ACWPKvs0tx68vkWojCJfnBHgBGaTbFWPRsLJ8wHRnwOzJqorod71RFxNJ9jcpoiNIeY1 lYFA== X-Gm-Message-State: ALQs6tDyiz8Du06ENIDEfiiRfMojMKF8/ivqhg0Lj+Wbxk1dR4oOzSFn lPC9ZP9bmOwicWdDkS5bxaBFJA6juYVcpvBVyZr6Sw== X-Received: by 10.31.168.213 with SMTP id r204mr22435115vke.84.1523343604528; Tue, 10 Apr 2018 00:00:04 -0700 (PDT) MIME-Version: 1.0 Received: by 10.31.164.81 with HTTP; Tue, 10 Apr 2018 00:00:03 -0700 (PDT) In-Reply-To: References: <1522128575-5326-1-git-send-email-yamada.masahiro@socionext.com> <1522128575-5326-21-git-send-email-yamada.masahiro@socionext.com> From: Kees Cook Date: Tue, 10 Apr 2018 00:00:03 -0700 X-Google-Sender-Auth: muSlbXOrKizUz7v04dGKHko29is Message-ID: Subject: Re: [PATCH v2 20/21] gcc-plugins: enable GCC_PLUGINS for COMPILE_TEST To: Masahiro Yamada Cc: linux-kbuild , Sam Ravnborg , Linus Torvalds , Arnd Bergmann , Ulf Magnusson , Thomas Gleixner , Greg Kroah-Hartman , Randy Dunlap , "Luis R . Rodriguez" , Nicolas Pitre , LKML Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Apr 9, 2018 at 11:15 PM, Masahiro Yamada wrote: > Can you explain a bit more about GCC_PLUGIN_RANDSTRUCT_PERFORMANCE? > > IIUC, this option reduces the randomization. Correct: I don't want to do COMPILE_TEST buids with GCC_PLUGIN_RANDSTRUCT_PERFORMANCE since it is effectively a subset of the GCC_PLUGIN_RANDSTRUCT possibilities. So, ..._PERFORMANCE shouldn't be enabled for COMPILE_TEST, as that would reduce the coverage for buid tests. -Kees -- Kees Cook Pixel Security