Re: Need debugging help : RE: [Xen-devel] Problems creating DomUs on the ES7000s

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 28 Sep 2005, at 16:59, Puthiyaparambil, Aravindh wrote:

> I have been looking into the problem. The alignment check is happening
> on a "lock cmpxchg8b". Is it possible for ACs to happen when going
> across page boundaries on cmpxchg8b in CPL 0? Is there any scenario 
> when
> ACs can happen with cmpxchg8b in CPL 0?
The reference manuals say that this type of fault can only occur when 
CPL=3.
The description of CMPXCHG8B does not place any restrictions on the 
alignment of the memory operand.
 -- Keir


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