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Re: [Xen-devel] [PATCH] Enble 6 argument hypercalls for HVMs

To: "Keir Fraser" <keir@xxxxxxx>
Subject: Re: [Xen-devel] [PATCH] Enble 6 argument hypercalls for HVMs
From: "Jan Beulich" <JBeulich@xxxxxxxxxx>
Date: Wed, 15 Dec 2010 12:12:01 +0000
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>>> On 15.12.10 at 12:43, Keir Fraser <keir@xxxxxxx> wrote:
> On 15/12/2010 10:40, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote:
>> Looking at this code also makes me wonder once again whether
>> it really is a good idea to have a generally not taken forward
>> branch here.
> 
> Which generally not-taken branch? The 'je 1f' instruction generally *will*
> be taken!

Oops, of course - it being taken is the problem, as it'll be statically
mis-predicted.

Jan


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