On Wed, 2023-01-11 at 11:29 -0700, Alex Williamson wrote: > > Nice. IIRC, we ended up with the hack solution we have today in vfio > because there was too much resistance to callbacks that were only > necessary for vfio in the past. Once we had KVM resampling support, > it simply wasn't worth the effort for a higher latency solution to > fight that battle, so we implemented what could best be described as > a universal workaround embedded in vfio. > > Clearly a callback is preferable, and yes, that's how we operate with > KVM resampling and unmasking INTx, so in theory plumbing this to our > existing eoi callback and removing the region toggling ought to do > the right thing. Thanks,
Well, I'm happy for the Xen support be a second use case which means it's no longer "only necessary for VFIO", and keep prodding at it if that's going to be useful...
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