Re: [PATCH v4 13/17] kvm: i8254: Deactivate APICv when using in-kernel PIT re-injection mode.

[Paolo Bonzini]

On 05/11/19 00:17, Roman Kagan wrote:
>> This is not too nice for Intel which does support (through the EOI exit
>> mask) APICv even if PIT reinjection active.
> Hmm, it's tempting to just make svm_load_eoi_exitmap() disable AVIC when
> given a non-empty eoi_exit_bitmap, and enable it back on a clear
> eoi_exit_bitmap.  This may remove the need to add special treatment to
> PIT etc.

That is a very nice idea---we can make that a single disable reason,
like APICV_DEACTIVATE_REASON_EOI, and Intel can simply never use it.

Paolo