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Date:	Sat, 5 Apr 2008 10:40:18 +0300
From:	"Pekka Enberg" <>
To:	"Avi Kivity" <>
Cc:	"Pekka Paalanen" <>,,
	"Ingo Molnar" <>,
	"Christoph Hellwig" <>,
	"Arjan van de Ven" <>,
	"Pavel Roskin" <>,
	"Steven Rostedt" <>,
	"Peter Zijlstra" <>,
Subject: Re: mmiotrace bug: recursive probe hit

On Sat, Apr 5, 2008 at 10:36 AM, Avi Kivity <> wrote:
> It should not be too difficult to modify x86_emulate.c to do everything
> through a function vector.  However there is a simpler (for you) solution:
> run the driver-to-be-reverse-engineered in a kvm guest, and modify kvm
> userspace to log accesses to mmio regions.  This requires the not-yet-merged
> pci passthrough support.  You can reverse engineer Windows drivers with this
> as well.
>  This won't work for kmemcheck smp though.

For kmemcheck, I'd prefer the per-CPU page tables suggested by Ingo.
I'm having hard time understanding why that's a "ugly hack" compared
to using kvm for this...
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