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=-0.8 required=3.0 tests=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 29E49ECDE5F for ; Thu, 19 Jul 2018 23:38:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D83E9205F4 for ; Thu, 19 Jul 2018 23:38:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D83E9205F4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=zytor.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 S1731445AbeGTAYM (ORCPT ); Thu, 19 Jul 2018 20:24:12 -0400 Received: from terminus.zytor.com ([198.137.202.136]:40321 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727650AbeGTAYM (ORCPT ); Thu, 19 Jul 2018 20:24:12 -0400 Received: from terminus.zytor.com (localhost [127.0.0.1]) by terminus.zytor.com (8.15.2/8.15.2) with ESMTPS id w6JNbmeJ2454583 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Thu, 19 Jul 2018 16:37:48 -0700 Received: (from tipbot@localhost) by terminus.zytor.com (8.15.2/8.15.2/Submit) id w6JNbmaQ2454580; Thu, 19 Jul 2018 16:37:48 -0700 Date: Thu, 19 Jul 2018 16:37:48 -0700 X-Authentication-Warning: terminus.zytor.com: tipbot set sender to tipbot@zytor.com using -f From: tip-bot for Joerg Roedel Message-ID: Cc: jpoimboe@redhat.com, hpa@zytor.com, aarcange@redhat.com, tglx@linutronix.de, linux-kernel@vger.kernel.org, boris.ostrovsky@oracle.com, brgerst@gmail.com, bp@alien8.de, jgross@suse.com, luto@kernel.org, jkosina@suse.cz, peterz@infradead.org, will.deacon@arm.com, torvalds@linux-foundation.org, jroedel@suse.de, dhgutteridge@sympatico.ca, David.Laight@aculab.com, dvlasenk@redhat.com, mingo@kernel.org, eduval@amazon.com, gregkh@linuxfoundation.org, llong@redhat.com, pavel@ucw.cz, dave.hansen@intel.com Reply-To: hpa@zytor.com, aarcange@redhat.com, jpoimboe@redhat.com, linux-kernel@vger.kernel.org, boris.ostrovsky@oracle.com, tglx@linutronix.de, brgerst@gmail.com, bp@alien8.de, jkosina@suse.cz, luto@kernel.org, peterz@infradead.org, jgross@suse.com, will.deacon@arm.com, torvalds@linux-foundation.org, dhgutteridge@sympatico.ca, jroedel@suse.de, mingo@kernel.org, David.Laight@aculab.com, dvlasenk@redhat.com, llong@redhat.com, gregkh@linuxfoundation.org, pavel@ucw.cz, dave.hansen@intel.com, eduval@amazon.com In-Reply-To: <1531906876-13451-38-git-send-email-joro@8bytes.org> References: <1531906876-13451-38-git-send-email-joro@8bytes.org> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/pti] x86/pti: Allow CONFIG_PAGE_TABLE_ISOLATION for x86_32 Git-Commit-ID: 7757d607c6b31867777de42e1fb0210b9c5d8b70 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 7757d607c6b31867777de42e1fb0210b9c5d8b70 Gitweb: https://git.kernel.org/tip/7757d607c6b31867777de42e1fb0210b9c5d8b70 Author: Joerg Roedel AuthorDate: Wed, 18 Jul 2018 11:41:14 +0200 Committer: Thomas Gleixner CommitDate: Fri, 20 Jul 2018 01:11:48 +0200 x86/pti: Allow CONFIG_PAGE_TABLE_ISOLATION for x86_32 Allow PTI to be compiled on x86_32. Signed-off-by: Joerg Roedel Signed-off-by: Thomas Gleixner Tested-by: Pavel Machek Cc: "H . Peter Anvin" Cc: linux-mm@kvack.org Cc: Linus Torvalds Cc: Andy Lutomirski Cc: Dave Hansen Cc: Josh Poimboeuf Cc: Juergen Gross Cc: Peter Zijlstra Cc: Borislav Petkov Cc: Jiri Kosina Cc: Boris Ostrovsky Cc: Brian Gerst Cc: David Laight Cc: Denys Vlasenko Cc: Eduardo Valentin Cc: Greg KH Cc: Will Deacon Cc: aliguori@amazon.com Cc: daniel.gruss@iaik.tugraz.at Cc: hughd@google.com Cc: keescook@google.com Cc: Andrea Arcangeli Cc: Waiman Long Cc: "David H . Gutteridge" Cc: joro@8bytes.org Link: https://lkml.kernel.org/r/1531906876-13451-38-git-send-email-joro@8bytes.org --- security/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/security/Kconfig b/security/Kconfig index c4302067a3ad..afa91c6f06bb 100644 --- a/security/Kconfig +++ b/security/Kconfig @@ -57,7 +57,7 @@ config SECURITY_NETWORK config PAGE_TABLE_ISOLATION bool "Remove the kernel mapping in user mode" default y - depends on X86_64 && !UML + depends on X86 && !UML help This feature reduces the number of hardware side channels by ensuring that the majority of kernel addresses are not mapped