Re: [Xen-ia64-devel] PATCH: cleanup of tlbflush

[Tristan Gingold <Tristan.Gingold@xxxxxxxx>]

Le Jeudi 11 Mai 2006 04:11, Tian, Kevin a écrit :
> From: Isaku Yamahata [mailto:yamahata@xxxxxxxxxxxxx]
>
> >Sent: 2006年5月11日 10:04
> >
> >I agree with you that a simple and certain way should be adopted
> >as a first step and that complex and uncertain thing should be
> >examined later.
> >In this case it is that xen should be given virtual addresses to
> >flush trusting dom0.
>
> Yes, same page now. On this point, we have to trust. Hey, para-domain
> is para-virtualized so it should be cooperative. Cooperative here means
> para-domain needs to conform with para-interfaces defined by Xen. One
> of Xen's responsibility is to service domain's request (good or bad) and
> ensure bad request from one crazy domain not interfering with others.
> You know there're infinite approaches to destroy domain itself easier than
> passing a bogus va at grant unmap. :-)
The problem is not destroying itself, but reading foreign ungranted page.

Tristan.

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