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[209.132.180.67]) by mx.google.com with ESMTP id l63si838612oig.123.2020.03.05.23.54.29; Thu, 05 Mar 2020 23:54:41 -0800 (PST) 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=pass header.i=@gmail.com header.s=20161025 header.b=PNrX6AM0; 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=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726034AbgCFHyM (ORCPT + 99 others); Fri, 6 Mar 2020 02:54:12 -0500 Received: from mail-pj1-f66.google.com ([209.85.216.66]:33643 "EHLO mail-pj1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725901AbgCFHyM (ORCPT ); Fri, 6 Mar 2020 02:54:12 -0500 Received: by mail-pj1-f66.google.com with SMTP id o21so3212727pjs.0 for ; Thu, 05 Mar 2020 23:54:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=UWIoMeEB2CUV9mwiKAX71h5fko7k2os2QipVNvf6bCo=; b=PNrX6AM0uaL/bBdobe7dNADUo+F4/G1hUMaxudkNpBcH04picEhD9scb8esJBu6Q8a A7NTB9tyLFjUqB0Vb41KIuF5FxaKvLvWhw+T3Vo62B3dpWk75cmacDwHBt3zF1aizmPG N6NQ0FxUXTlZL+gPZkCLmVzv/rkU2ShqN9g8ELn3yjtOxdhMkq8ZuTaMeuEEjZNG+KZj qPvK7hZhtn27i/JgwlrAdko9a3PCR3Eq7bYcoaTGUGV/FdXuzzbksDpnqZK+fe0HFbD5 3bwKi8/YJ227AsaLnnoEwW575gt7UXxRPjLV4V8wyTXWk+4KsQFkWq2K8S72dKjhXnVV XQLg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=UWIoMeEB2CUV9mwiKAX71h5fko7k2os2QipVNvf6bCo=; b=Uz1mVLY2yecjFGy0Bd0rHVkzJMx+GSa9enmgwaYyWuVG0NQj38VN8NPavkfRAqg2Fa fy+gxy0tuwSsxt/9FPJgklsEfqA4Ma0b9u8iyFCaMSS8JvLeF2KMvUwm1yR92qdDiIW4 quUyB4YiznA/rpJWp5SH9V2MhFMflaa/I2Ba6pY9SwmKk6MnlxOeV8Yrn6RKUtnLC8tJ 0r1ScxGE0id0B/TupzX/FHFB1CnKvcV4mLHuMDjpGh93eArz03nHc1gQUBYwdnt9TZOk Yl5skBDvZ69/q2NJiJHu9r/9JCZ2kM1jOy1qwjBEs91bi21YY6pY/ADPL+IRR7jUMIj0 1g9g== X-Gm-Message-State: ANhLgQ10sCfJx0jbKGPU1CzgPbKoqV0j9tsiyv+MV1rcCzOJzitRfezm YjCWbMxakI70NLNzbtn1Y2e/naXjKHhgOeqxps5UQwpW X-Received: by 2002:a17:90a:d205:: with SMTP id o5mr2271425pju.46.1583481251417; Thu, 05 Mar 2020 23:54:11 -0800 (PST) MIME-Version: 1.0 References: <202003021038.8F0369D907@keescook> <20200305151144.836824-1-nivedita@alum.mit.edu> In-Reply-To: <20200305151144.836824-1-nivedita@alum.mit.edu> From: Max Filippov Date: Thu, 5 Mar 2020 23:54:00 -0800 Message-ID: Subject: Re: [PATCH] xtensa/mm: Stop printing the virtual memory layout To: Arvind Sankar Cc: Kees Cook , "Tobin C . Harding" , Tycho Andersen , kernel-hardening@lists.openwall.com, Chris Zankel , "open list:TENSILICA XTENSA PORT (xtensa)" , 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 Thu, Mar 5, 2020 at 7:11 AM Arvind Sankar wrote: > > For security, don't display the kernel's virtual memory layout. Given that primary users of xtensa linux kernels are developers removing this information, and even disabling it by default doesn't sound reasonable to me. -- Thanks. -- Max