From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933529AbbFIMhA (ORCPT ); Tue, 9 Jun 2015 08:37:00 -0400 Received: from terminus.zytor.com ([198.137.202.10]:52110 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933185AbbFIMgr (ORCPT ); Tue, 9 Jun 2015 08:36:47 -0400 Date: Tue, 9 Jun 2015 05:36:17 -0700 From: tip-bot for Dave Hansen Message-ID: Cc: peterz@infradead.org, mingo@kernel.org, dave@sr71.net, akpm@linux-foundation.org, torvalds@linux-foundation.org, hpa@zytor.com, linux-kernel@vger.kernel.org, dave.hansen@linux.intel.com, tglx@linutronix.de Reply-To: tglx@linutronix.de, dave.hansen@linux.intel.com, linux-kernel@vger.kernel.org, hpa@zytor.com, torvalds@linux-foundation.org, akpm@linux-foundation.org, dave@sr71.net, mingo@kernel.org, peterz@infradead.org In-Reply-To: <20150607183706.70277DAD@viggo.jf.intel.com> References: <20150607183706.70277DAD@viggo.jf.intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/fpu] x86/mpx: Allow 32-bit binaries on 64-bit kernels again Git-Commit-ID: 97ac46a5087eaf87fd76ff7bb31ec9c896010442 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 List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 97ac46a5087eaf87fd76ff7bb31ec9c896010442 Gitweb: http://git.kernel.org/tip/97ac46a5087eaf87fd76ff7bb31ec9c896010442 Author: Dave Hansen AuthorDate: Sun, 7 Jun 2015 11:37:06 -0700 Committer: Ingo Molnar CommitDate: Tue, 9 Jun 2015 12:24:34 +0200 x86/mpx: Allow 32-bit binaries on 64-bit kernels again Now that the bugs in mixed mode MPX handling are fixed, re-allow 32-bit binaries on 64-bit kernels again. Signed-off-by: Dave Hansen Reviewed-by: Thomas Gleixner Cc: Andrew Morton Cc: Dave Hansen Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20150607183706.70277DAD@viggo.jf.intel.com Signed-off-by: Ingo Molnar --- arch/x86/mm/mpx.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/arch/x86/mm/mpx.c b/arch/x86/mm/mpx.c index 6233d51..7a657f5 100644 --- a/arch/x86/mm/mpx.c +++ b/arch/x86/mm/mpx.c @@ -367,12 +367,6 @@ static __user void *mpx_get_bounds_dir(void) return MPX_INVALID_BOUNDS_DIR; /* - * 32-bit binaries on 64-bit kernels are currently - * unsupported. - */ - if (IS_ENABLED(CONFIG_X86_64) && test_thread_flag(TIF_IA32)) - return MPX_INVALID_BOUNDS_DIR; - /* * The bounds directory pointer is stored in a register * only accessible if we first do an xsave. */