Re: [Xen-devel] [PATCH] x86: allow NMI injection

[Keir Fraser <keir@xxxxxxxxxxxxx>]

On 28/2/07 12:21, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote:

>> Notably this patch changes the way that a NMI handler is registered to use
>> the native-like vector 2. This changes the guest interface though. Do you
> 
> But only in a benign fashion - registering the old way is still possible,
> registering through set_trap_table now works where it previously didn't.
> 
>> really need to be able to specify a custom CS? Can you not vector to the
>> flat CS and then far jump?
> 
> I probably could, but I'm generally opposed to making assumptions about
> the guest where this is unnecessary (i.e. I dislike all callback pointers
> registered without selectors).

Oh I see. That sounds reasonable.

vcpu_op() isn't perhaps a great match but then neither is physdev_op()
really. I'll have a think about which is better.

 -- Keir


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