On Wed, Feb 19, 2025 at 10:35:28AM +1100, Alexey Kardashevskiy wrote: > With in-place conversion, we could map the entire guest once in the HV IOMMU > and control the Cbit via the guest's IOMMU table (when available). Thanks, Isn't it more complicated than that? I understood you need to have a IOPTE boundary in the hypervisor at any point where the guest Cbit changes - so you can't just dump 1G hypervisor pages to cover the whole VM, you have to actively resize ioptes? This was the whole motivation to adding the page size override kernel command line. Jason
