Message-ID: <52E5C18F.2060405@intel.com>
Date: Mon, 27 Jan 2014 10:16:47 +0800
From: Ren Qiaowei <qiaowei.ren@intel.com>
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To: "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@kernel.org>
CC: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
        x86@kernel.org, linux-kernel@vger.kernel.org,
        Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [PATCH v3 3/4] x86, mpx: add prctl commands PR_MPX_INIT, PR_MPX_RELEASE
References: <1390727338-20487-1-git-send-email-qiaowei.ren@intel.com> <1390727338-20487-4-git-send-email-qiaowei.ren@intel.com> <20140126082201.GB28831@gmail.com> <52E4C5F2.8070707@intel.com> <20140126083942.GB29339@gmail.com> <52E5BB66.8060104@zytor.com> <52E5BC9C.9070400@intel.com> <52E5C000.1050506@zytor.com>
In-Reply-To: <52E5C000.1050506@zytor.com>
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Sender: linux-kernel-owner@vger.kernel.org

On 01/27/2014 10:10 AM, H. Peter Anvin wrote:
> On 01/26/2014 05:55 PM, Ren Qiaowei wrote:
>>
>> Peter, you mean we should remove these two call and do what they do in
>> user-space, right?
>>
>
> Unless we think there is a benefit to the kernel to have a on/off switch
> for the #BR exception (if disabled, all #BR exceptions are signals,
> regardless of source.)
>
> There might be, would like other people's opinion.
>

These two syscalls are only used to release automaticlly the bound 
tables, and they will not set BNDSTATUS and BNDCFGU.

I want to remove them also. :) But if so, we have to release the bound 
tables in user-space.

Thanks,
Qiaowei
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