From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753871AbaFMUbs (ORCPT ); Fri, 13 Jun 2014 16:31:48 -0400 Received: from smtp.outflux.net ([198.145.64.163]:45081 "EHLO smtp.outflux.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751339AbaFMUbn (ORCPT ); Fri, 13 Jun 2014 16:31:43 -0400 From: Kees Cook To: linux-kernel@vger.kernel.org Cc: Kees Cook , Pavel Machek , Josh Boyer , "H. Peter Anvin" , Randy Dunlap , Thomas Gleixner , Ingo Molnar , x86@kernel.org, "Rafael J. Wysocki" , Len Brown , Wei Yongjun , linux-doc@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH v3 0/2] make kASLR vs hibernation boot-time selectable Date: Fri, 13 Jun 2014 13:30:34 -0700 Message-Id: <1402691436-20138-1-git-send-email-keescook@chromium.org> X-Mailer: git-send-email 1.7.9.5 X-HELO: www.outflux.net Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Distros want to be able to offer CONFIG_RANDOMIZE_BASE as well as CONFIG_HIBERNATION in a single kernel. Instead of making kASLR depend on !HIBERNATION at compile time, allow kaslr to be selectable at boot time (via "kaslr" kernel command line), which will disable hibernation in the kernel. In this way the end user can choose which feature they want more with hibernation continuing to stay enabled by default (no surprises). This also has the benefit of being able to entirely disable hibernation from the kernel command line, regardless of kASLR, which is a separately desired feature as well. v3: - switch from EINVAL to EPERM (pavel, jwboyer) v2: - rework using kernel command line instead of hibernation_mode (rjw)