On 02/02/2011 05:52 PM, Jan Kiszka wrote:
>>
> If there is no problem in the logic of this commit (and I do not see
> one yet) then we somewhere miss kicking vcpu when interrupt, that should be
> handled, arrives?
I'm not yet confident about the logic of the kernel patch: mov to cr8 is
serializing. If the guest raises the tpr and then signals this with a
succeeding, non vm-exiting instruction to the other vcpus, one of those
could inject an interrupt with a higher priority than the previous tpr,
but a lower one than current tpr. QEMU user space would accept this
interrupt - and would likely surprise the guest. Do I miss something?
apic_get_interrupt() is only called from the vcpu thread, so it should
see a correct tpr.
The only difference I can see with the patch is that we may issue a
spurious cpu_interrupt(). But that shouldn't do anything bad, should it?
--
error compiling committee.c: too many arguments to function
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