linux-kernel - Re: [PATCH 2/3] x86: Remove cmpxchg from i386 NMI nesting code

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Message-ID: <a74922ac-af09-4d3b-8a78-d5778cc29ba2@email.android.com>
Date:	Sun, 10 Jun 2012 20:17:03 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	"Maciej W. Rozycki" <macro@...ux-mips.org>
CC:	Steven Rostedt <rostedt@...dmis.org>, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 2/3] x86: Remove cmpxchg from i386 NMI nesting code

libx86 is used for this.  Of course, when you interpret you can also record...

"Maciej W. Rozycki" <macro@...ux-mips.org> wrote:

>On Sun, 10 Jun 2012, H. Peter Anvin wrote:
>
>> Just use a VM or a simulator.
>
> That wasn't completely serious ;) -- however thanks for the hint.  I 
>wonder actually if any piece of software would let the code run in a 
>"pass-through" mode and record what I/O accesses went past.  I reckon 
>DOSEMU used to support that (and running the VGA BIOS) -- but that
>piece 
>did indeed require vm86.  Then the sequence recorded could be replayed 
>natively.
>
> Thanks for the food for thought! :)
>
>  Maciej

-- 
Sent from my mobile phone. Please excuse brevity and lack of formatting.
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