From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lb0-f177.google.com (mail-lb0-f177.google.com [209.85.217.177]) by kanga.kvack.org (Postfix) with ESMTP id A98136B00CF for ; Fri, 14 Nov 2014 12:56:49 -0500 (EST) Received: by mail-lb0-f177.google.com with SMTP id z12so6263118lbi.8 for ; Fri, 14 Nov 2014 09:56:48 -0800 (PST) Received: from mail-la0-f51.google.com (mail-la0-f51.google.com. [209.85.215.51]) by mx.google.com with ESMTPS id ju18si20996769lab.8.2014.11.14.09.56.47 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 14 Nov 2014 09:56:48 -0800 (PST) Received: by mail-la0-f51.google.com with SMTP id q1so15529805lam.38 for ; Fri, 14 Nov 2014 09:56:47 -0800 (PST) Message-ID: <5466425D.1060100@cogentembedded.com> Date: Fri, 14 Nov 2014 20:56:45 +0300 From: Sergei Shtylyov MIME-Version: 1.0 Subject: Re: [PATCH 05/11] x86, mpx: add MPX to disaabled features References: <20141114151816.F56A3072@viggo.jf.intel.com> <20141114151823.B358EAD2@viggo.jf.intel.com> In-Reply-To: <20141114151823.B358EAD2@viggo.jf.intel.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Dave Hansen , hpa@zytor.com Cc: tglx@linutronix.de, mingo@redhat.com, x86@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@linux-mips.org, qiaowei.ren@intel.com, dave.hansen@linux.intel.com Hello. On 11/14/2014 06:18 PM, Dave Hansen wrote: > From: Dave Hansen > This allows us to use cpu_feature_enabled(X86_FEATURE_MPX) as > both a runtime and compile-time check. > When CONFIG_X86_INTEL_MPX is disabled, > cpu_feature_enabled(X86_FEATURE_MPX) will evaluate at > compile-time to 0. If CONFIG_X86_INTEL_MPX=y, then the cpuid > flag will be checked at runtime. > Signed-off-by: Dave Hansen > Signed-off-by: Qiaowei Ren > --- > b/arch/x86/include/asm/disabled-features.h | 8 +++++++- > 1 file changed, 7 insertions(+), 1 deletion(-) > diff -puN arch/x86/include/asm/disabled-features.h~mpx-v11-add-MPX-to-disaabled-features arch/x86/include/asm/disabled-features.h > --- a/arch/x86/include/asm/disabled-features.h~mpx-v11-add-MPX-to-disaabled-features 2014-11-14 07:06:22.297610243 -0800 > +++ b/arch/x86/include/asm/disabled-features.h 2014-11-14 07:06:22.300610378 -0800 [...] > @@ -34,6 +40,6 @@ > #define DISABLED_MASK6 0 > #define DISABLED_MASK7 0 > #define DISABLED_MASK8 0 > -#define DISABLED_MASK9 0 > +#define DISABLED_MASK9 (DISABLE_MPX) These parens are not really needed. Sorry to be a PITA and not saying this before. [...] WBR, Sergei -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org