From: Ren Qiaowei <qiaowei.ren@intel.com>
To: Andy Lutomirski <luto@amacapital.net>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>
Cc: X86 ML <x86@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3 1/4] x86, mpx: add documentation on Intel MPX
Date: Tue, 28 Jan 2014 11:40:46 +0800 [thread overview]
Message-ID: <52E726BE.50401@intel.com> (raw)
In-Reply-To: <52E6C134.3050608@mit.edu>
On 01/28/2014 04:27 AM, Andy Lutomirski wrote:
> On 01/26/2014 01:08 AM, Qiaowei Ren wrote:
>> +1) Providing handlers for bounds faults (#BR).
>> +
>> +When MPX is enabled, there are 2 new situations that can generate
>> +#BR faults. If a bounds overflow occurs then a #BR is generated.
>> +The fault handler will decode MPX instructions to get violation
>> +address and set this address into extended struct siginfo.
>
> Can you document exactly where the insn address and pointer value end
> up? (If it's in the (IMO hideous) cr2 field in ucontext, this needs to
> be documented. If it's somewhere useful in siginfo, that should also be
> documented to save people the time it takes to figure it out.)
>
Ok. I will describe extended siginfo at this documentation.
Thanks,
Qiaowei
next prev parent reply other threads:[~2014-01-28 3:46 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-26 9:08 [PATCH v3 0/4] Intel MPX support Qiaowei Ren
2014-01-26 8:19 ` Ingo Molnar
2014-01-26 8:20 ` Ren Qiaowei
2014-01-28 6:42 ` Ingo Molnar
2014-01-28 7:01 ` Ren Qiaowei
2014-01-28 18:26 ` H. Peter Anvin
2014-01-26 9:08 ` [PATCH v3 1/4] x86, mpx: add documentation on Intel MPX Qiaowei Ren
2014-01-26 3:06 ` Randy Dunlap
2014-01-26 3:15 ` Ren Qiaowei
2014-01-27 20:27 ` Andy Lutomirski
2014-01-28 3:40 ` Ren Qiaowei [this message]
2014-01-26 9:08 ` [PATCH v3 2/4] x86, mpx: hook #BR exception handler to allocate bound tables Qiaowei Ren
2014-01-27 20:36 ` Andy Lutomirski
2014-01-28 3:35 ` Ren Qiaowei
2014-01-28 5:21 ` Andy Lutomirski
2014-01-28 5:39 ` Ren Qiaowei
2014-01-28 6:42 ` Andy Lutomirski
2014-01-28 6:46 ` Ren Qiaowei
2014-01-26 9:08 ` [PATCH v3 3/4] x86, mpx: add prctl commands PR_MPX_INIT, PR_MPX_RELEASE Qiaowei Ren
2014-01-26 8:22 ` Ingo Molnar
2014-01-26 8:23 ` Ren Qiaowei
2014-01-26 8:39 ` Ingo Molnar
2014-01-26 11:37 ` Ren, Qiaowei
2014-01-27 1:50 ` H. Peter Anvin
2014-01-27 1:55 ` Ren Qiaowei
2014-01-27 2:10 ` H. Peter Anvin
2014-01-27 2:16 ` Ren Qiaowei
2014-01-27 21:54 ` Andy Lutomirski
2014-01-27 22:01 ` H. Peter Anvin
2014-01-26 9:08 ` Ingo Molnar
2014-01-26 12:49 ` Ren, Qiaowei
2014-01-26 15:14 ` Ingo Molnar
2014-01-27 2:01 ` Ren Qiaowei
2014-01-27 20:59 ` Andy Lutomirski
2014-01-26 9:08 ` [PATCH v3 4/4] x86, mpx: extend siginfo structure to include bound violation information Qiaowei Ren
2014-01-26 4:22 ` David Rientjes
2014-01-26 4:39 ` Ren Qiaowei
2014-01-26 21:38 ` David Rientjes
2014-01-27 1:34 ` Ren Qiaowei
2014-01-27 1:53 ` H. Peter Anvin
2014-01-27 1:56 ` Ren Qiaowei
2014-01-27 21:58 ` Andy Lutomirski
2014-01-28 2:43 ` Ren Qiaowei
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