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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 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Wed, 15 Dec 2010 04:14:09 -0800 |
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| In-reply-to: | <C92E5A71.2907C%keir@xxxxxxx> |
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| References: | <4D08A920020000780002811F@xxxxxxxxxxxxxxxxxx> <C92E5A71.2907C%keir@xxxxxxx> |
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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 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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