From patchwork Thu Jun 27 22:13:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: tip-bot for Kobe Wu X-Patchwork-Id: 11020749 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1247913B4 for ; Thu, 27 Jun 2019 22:13:52 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 026CC286FE for ; Thu, 27 Jun 2019 22:13:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E5CDA28708; Thu, 27 Jun 2019 22:13:51 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.0 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.wl.linuxfoundation.org (Postfix) with SMTP id 602A9286FE for ; Thu, 27 Jun 2019 22:13:49 +0000 (UTC) Received: (qmail 5191 invoked by uid 550); 27 Jun 2019 22:13:48 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Delivered-To: mailing list kernel-hardening@lists.openwall.com Received: (qmail 5148 invoked from network); 27 Jun 2019 22:13:47 -0000 DKIM-Filter: OpenDKIM Filter v2.11.0 terminus.zytor.com x5RMDAoA472374 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zytor.com; s=2019061801; t=1561673591; bh=oNQW3R0Fq1NiXUpePESWOXF0yCeNhTbXhZSMVXdz8tQ=; h=Date:From:Cc:Reply-To:In-Reply-To:References:To:Subject:From; b=y2XCS2jvCKiQNHlwVKe5dqb3OTgDqs9KY+hVzZnPmh4mVzsHSeD4xYsVSIcqJkBp1 KxWoX82FRud2RH/hS0zTiQL8sYJdr8yp8O23xWWpza+65fIX8fiXXUKBdMpaACUtIn brRmeOTVUzmXcfYTRgeqCtoPOKTi11OdyNEXAMlHMaPa8ltVgw2glK6j0Vc2olsP1V cXTeZc2S+6W9GDwMnGqLcuyxTz2tgldtH20K+ekzx4vx3sRHXfUdiOnPAPF9uWRcJF 7yRT1PpOTb/hGzn5o9hOb4ELwIEsRoU1aeSiam8f32gALbrpZhRjNH4bPsqeGjza0o HyD51RpVPFNeA== Date: Thu, 27 Jun 2019 15:13:09 -0700 X-Authentication-Warning: terminus.zytor.com: tipbot set sender to tipbot@zytor.com using -f Sender: tip tree robot From: tip-bot for Andy Lutomirski Message-ID: Cc: bp@alien8.de, fweimer@redhat.com, jannh@google.com, hpa@zytor.com, kernel-hardening@lists.openwall.com, mingo@kernel.org, luto@kernel.org, tglx@linutronix.de, keescook@chromium.org, linux-kernel@vger.kernel.org, peterz@infradead.org In-Reply-To: References: To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/entry] Documentation/admin: Remove the vsyscall=native documentation Git-Commit-ID: d974ffcfb7447db5f29a4b662a3eaf99a4e1109e X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Disposition: inline X-Virus-Scanned: ClamAV using ClamSMTP Commit-ID: d974ffcfb7447db5f29a4b662a3eaf99a4e1109e Gitweb: https://git.kernel.org/tip/d974ffcfb7447db5f29a4b662a3eaf99a4e1109e Author: Andy Lutomirski AuthorDate: Wed, 26 Jun 2019 21:45:02 -0700 Committer: Thomas Gleixner CommitDate: Fri, 28 Jun 2019 00:04:38 +0200 Documentation/admin: Remove the vsyscall=native documentation The vsyscall=native feature is gone -- remove the docs. Fixes: 076ca272a14c ("x86/vsyscall/64: Drop "native" vsyscalls") Signed-off-by: Andy Lutomirski Signed-off-by: Thomas Gleixner Acked-by: Kees Cook Cc: Florian Weimer Cc: Jann Horn Cc: stable@vger.kernel.org Cc: Borislav Petkov Cc: Kernel Hardening Cc: Peter Zijlstra Link: https://lkml.kernel.org/r/d77c7105eb4c57c1a95a95b6a5b8ba194a18e764.1561610354.git.luto@kernel.org --- Documentation/admin-guide/kernel-parameters.txt | 6 ------ 1 file changed, 6 deletions(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 138f6664b2e2..0082d1e56999 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -5102,12 +5102,6 @@ emulate [default] Vsyscalls turn into traps and are emulated reasonably safely. - native Vsyscalls are native syscall instructions. - This is a little bit faster than trapping - and makes a few dynamic recompilers work - better than they would in emulation mode. - It also makes exploits much easier to write. - none Vsyscalls don't work at all. This makes them quite hard to use for exploits but might break your system.