From: "H. Peter Anvin" <hpa@zytor.com>
To: Dave Hansen <dave.hansen@intel.com>,
Qiaowei Ren <qiaowei.ren@intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v5 1/3] x86, mpx: add documentation on Intel MPX
Date: Wed, 26 Feb 2014 13:44:40 -0800 [thread overview]
Message-ID: <530E6048.9040600@zytor.com> (raw)
In-Reply-To: <530E3DC9.90609@intel.com>
On 02/26/2014 11:17 AM, Dave Hansen wrote:
> On 02/23/2014 05:27 AM, Qiaowei Ren wrote:
>> +Bounds Directory (BD) and Bounds Tables (BT) are stored in
>> +application memory and are allocated by the application (in case
>> +of kernel use, the structures will be in kernel memory). The
>> +bound directory and each instance of bound table are in contiguous
>> +linear memory.
>
> Hi Qiaowei,
>
> Does this mean that if userspace decided to map something in the way of
> the bounds tables that it would break MPX?
>
> Also, in the description, could we s/linear/virtual/? Linear seems to
> be the term that Intel likes to use in its documents, but we almost
> universally call them virtual addresses in the kernel.
>
It might be useful to clarify, though, just so noone gets confused with
effective addresses (offsets).
-hpa
next prev parent reply other threads:[~2014-02-26 21:45 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-23 13:27 [PATCH v5 0/3] Intel MPX support Qiaowei Ren
2014-02-23 13:27 ` [PATCH v5 1/3] x86, mpx: add documentation on Intel MPX Qiaowei Ren
2014-02-26 19:17 ` Dave Hansen
2014-02-26 20:58 ` Dave Hansen
2014-02-26 21:44 ` H. Peter Anvin [this message]
2014-02-27 2:03 ` Ren Qiaowei
2014-02-26 21:19 ` Dave Hansen
2014-02-27 1:58 ` Ren Qiaowei
2014-02-23 13:27 ` [PATCH v5 2/3] x86, mpx: hook #BR exception handler to allocate bound tables Qiaowei Ren
2014-02-24 17:27 ` Dave Hansen
2014-02-24 17:51 ` H. Peter Anvin
2014-02-25 13:34 ` Ren, Qiaowei
2014-02-23 13:27 ` [PATCH v5 3/3] x86, mpx: extend siginfo structure to include bound violation information Qiaowei Ren
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