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RE: [Xen-ia64-devel] vmMangleRid
| To: | "Tristan Gingold" <Tristan.Gingold@xxxxxxxx>, <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | RE: [Xen-ia64-devel] vmMangleRid |
| From: | "Magenheimer, Dan (HP Labs Fort Collins)" <dan.magenheimer@xxxxxx> |
| Date: | Thu, 6 Apr 2006 09:19:34 -0700 |
| Delivery-date: | Thu, 06 Apr 2006 09:19:49 -0700 |
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| Thread-index: | AcZZWBICecUJceprSsSnmO4NqOY0PgAPXSuA |
| Thread-topic: | [Xen-ia64-devel] vmMangleRid |
> Subject: [Xen-ia64-devel] vmMangleRid
>
> Hi
>
> the vmMangleRid function starts with:
>
> union bits64 { unsigned char bytes[4]; unsigned long uint; };
>
> union bits64 t;
>
> This is strange, I always thought there were 8 bytes in 64 bits...
Using advanced paravirtualization techniques, we are able to
virtualize 12 bytes into a 64-bit word!
:-) :-) :-) :-) :-) :-)
Seriously, this bug has been there since the alpha release (12/2004)
so it is apparently harmless, though should be cleaned up.
Dan
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