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Re: [Qemu-devel] [PATCH] SVM IOIO intercept does not check all bits


From: Bernhard Kauer
Subject: Re: [Qemu-devel] [PATCH] SVM IOIO intercept does not check all bits
Date: Fri, 7 Dec 2007 15:20:02 +0100
User-agent: Mutt/1.5.17 (2007-11-01)

On Fri, Dec 07, 2007 at 02:10:35PM +0100, Alexander Graf wrote:
> Could you please make this more readable?

Not easy by a one liner. I splitted the mask calculation in a separate line.
Is it better now?

> Apart from that the patch is fine if the highest bit in the IOIO vector is
> to be set. I could not find that in the documentation.


I did not understand your comment. Perhaps you mean the following
sentence from the AMD vol. 2:

>> For IN/OUT instructions that access more than a single byte, the
>> permission bits for all bytes are checked; if any bit is set to 1,
>> the I/O operation is intercepted.


Greetings,

        Bernhard

Attachment: qemu_ioio.diff
Description: Text Data


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