Re: [Xen-ia64-devel] Enabling hypercalls from VT-i domain

[Tristan Gingold <Tristan.Gingold@xxxxxxxx>]

Le Mercredi 02 Août 2006 14:23, Doi.Tsunehisa@xxxxxxxxxxxxxx a écrit :
> Hi Tristan,
>
>   Thank you for your comment.
>
> You (Tristan.Gingold) said:
> > Le Mercredi 02 Aot 2006 12:34, DOI Tsunehisa a crit :
[...]
> > You'd better to use the VMX_DOMAIN macro here.
>
>   I agree. I should use the VMX_DOMAIN macro except for '(regs->..
> IA64_PSR_VM)'. I'll modify it.
'current' gives you the current vcpu.

> > I think you'd better not to call ia64_hypercall from VTi side if cpl !=
> > 0.
>
>   I worry about this point. The ia64_hypercall is called from
> ia64_handle_break without cpl != 2 checking, thus it's checked a privilege
> level of the caller for para-domain, I think. I believe that the both codes
> should be symmetrical.
>
>   What do you think about this point ?
Ok.

Tristan.


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