Re: [Xen-ia64-devel] alt_itlb_miss?

[Tristan Gingold <Tristan.Gingold@xxxxxxxx>]

Le Lundi 24 Avril 2006 10:30, Tian, Kevin a écrit :
> From: Tristan Gingold [mailto:Tristan.Gingold@xxxxxxxx]
>
> >Sent: 2006年4月24日 16:24
> >
> >Le Lundi 24 Avril 2006 09:52, Tian, Kevin a écrit :
> >> Hi, Kan,
> >>    Thanks for detail figure. From architecture correctness, I think
> >> your patch is yes required though case 2 is only walked before dom0
> >> loads rr7 (After that, vhpt table will be enabled from then on and case
> >> 1 is the only path then).
> >
> >Is VHPT enabled for rr7 ?
> >It really depends on where you look.  eg in vhpt.h:
> >#define VHPT_ENABLED 1
> >#define VHPT_ENABLED_REGION_0_TO_6 1
> >#define VHPT_ENABLED_REGION_7 0
> >
> >There are cleanup to do...
>
> Above definition is stale and never used nowadays which does
> need cleanup. See set_one_rr where rr7 will be set with vhpt
> table enabled absolutely at the first time when guest tries to
> mov_to_rr.
Yes.

> Even VHPT_ENABLED itself is questionable. Does
> anybody ever expect to run a xen/ia64 without vhpt table? I don't
> think so...
Well it may be useful for debugging, but I really doubt it works!

So I will do cleanup if nobody disagree.

Tristan.



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