Re: [PATCH v5 00/12] AMD broadcast TLB invalidation

[Peter Zijlstra]

On Thu, Jan 16, 2025 at 06:14:00PM +0000, Michael Kelley wrote:
> So CoCo
> VMs may still use the paravirtualization that makes hypercalls to do
> TLB flushes. It's future work to *always* use INVLPGB (if available)
> in a CoCo VM.

That would place a limit on the number of CPUs, to be no larger than the
number of available ASIDs.