linux-kernel - Re: [PATCH v9 09/12] x86, mpx: decode MPX instruction to get bound violation information

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Message-ID: <5453EE0E.8060200@intel.com>
Date:	Fri, 31 Oct 2014 13:16:14 -0700
From:	Dave Hansen <dave.hansen@...el.com>
To:	Thomas Gleixner <tglx@...utronix.de>,
	"Ren, Qiaowei" <qiaowei.ren@...el.com>
CC:	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>,
	"linux-mips@...ux-mips.org" <linux-mips@...ux-mips.org>
Subject: Re: [PATCH v9 09/12] x86, mpx: decode MPX instruction to get bound
 violation information

On 10/27/2014 01:36 PM, Thomas Gleixner wrote:
> You're repeating yourself. Care to read the discussion about this from
> the last round of review again?

OK, so here's a rewritten decoder.  I think it's a lot more robust and
probably fixes a bug or two.  This ends up saving ~70 lines of code out
of ~300 or so for the old patch.

I'll include this in the next series, but I'm posting it early and often
to make sure I'm on the right track.

There is also a preparatory patch or two, but they're small.

View attachment "mpx-new-decoder.patch" of type "text/x-patch" (11336 bytes)