On Sat, Mar 11, 2023, Robert Hoo wrote: > Sean Christopherson <seanjc@xxxxxxxxxx> 于2023年3月11日周六 00:27写道： > > Practically speaking, UMIP _can't_ be guest owned without breaking UMIP > emulation. > > Agree. > Can we expect that in the future (not near future) that emulating UMIP > isn't needed at all? I mean, when all x86 CPUs on the market have UMIP in native. Heh, define "all x86s on the market". UMIP didn't come along until Broadwell, and we still get bug reports for Core2. It's going to be a long, long time before KVM can require UMIP support on Intel CPUs.
