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xen-ia64-devel
Re: [Xen-ia64-devel] RE: in_tpa is not SMP-safe
Le Mercredi 08 Mars 2006 18:38, Magenheimer, Dan (HP Labs Fort Collins) a
écrit :
> I was hoping Kevin would respond to this as my memory
> on it is dim. There was a rare but significant problem
> that this code was fixing and we went through several
> attempts to fix it. I don't think we ever understood
> exactly why this code was necessary because we (both
> Kevin and I) thought a different code sequence should
> work, but it didn't.
>
> So, yes, make the change to make it SMP-safe (I prefer
> the parameter), but be careful about changing the
> "in_tpa" semantics without running a very thorough
> test suite.
Ok.
Also, vcpu_translate look in itr_regions even for data_access. There is a
comment about that:
// FIXME?: check itr's for data accesses too, else bad things happen?
I suppose this is required to read instructions from Xen. Are there any other
uses ? Is it too dangerous to try to fix that ?
Tristan.
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