Re: Remaining passthrough/VT-d tasks list

["Yang, Sheng" <sheng.yang@intel.com>]

On Wednesday 24 September 2008 16:38:35 Avi Kivity wrote:
> Yang, Sheng wrote:
> >>         - Shared Interrupt support
> >
> > I still don't know who would do this. It's very important for VT-d real
> > usable. If nobody interested in it, I would pick it up, but after Oct. 6
> > (after National Holiday in China).
>
> Shared host interrupts?  What's your plan here?  The polarity trick?

Hi, Avi

After check host shared interrupts situation, I got a question here:

If I understand correctly, current solution don't block host shared irq, just 
come with the performance pentry. The penalty come with host disabled irq 
line for a period. We have to wait guest to write EOI. But I fail to see the 
correctness problem here (except a lot of spurious interrupt in the guest).

I've checked mail, but can't find clue about that. Can you explain the 
situation?

Thanks!
--
regards
Yang, Sheng