Re: [Xen-devel] Cpu pools discussion

[Juergen Gross <juergen.gross@xxxxxxxxxxxxxx>]

Keir Fraser wrote:
> On 28/07/2009 06:40, "Juergen Gross" <juergen.gross@xxxxxxxxxxxxxx> wrote:
> 
>> BTW: continue_hypercall_on_cpu() exists on x86 only and it isn't really much
>> better than my usage of it:
>> - remember old pinning state of current vcpu
>> - pin it temporarily to the cpu it should continue on
>> - continue the hypercall
>> - remove temporary pinning
>> - re-establish old pinning (if any)
>> Pretty much the same as my solution above ;-)
> 
> If your solution locks the pinning, as we do already, so that it cannot be
> changed while the continue_hypercall_on_cpu() is running, then that is fine.
> If it's not locked then it's not safe.

Locking in my solution should be okay.


Juergen

-- 
Juergen Gross                 Principal Developer Operating Systems
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