Merge tag 'kvm-x86-vmx-6.19' of https://github.com/kvm-x86/linux into HEAD

Merge tag 'kvm-x86-vmx-6.19' of https://github.com/kvm-x86/linux into HEAD

KVM VMX changes for 6.19:

 - Use the root role from kvm_mmu_page to construct EPTPs instead of the
   current vCPU state, partly as worthwhile cleanup, but mostly to pave the
   way for tracking per-root TLB flushes so that KVM can elide EPT flushes on
   pCPU migration if KVM has flushed the root at least once.

 - Add a few missing nested consistency checks.

 - Rip out support for doing "early" consistency checks via hardware as the
   functionality hasn't been used in years and is no longer useful in general,
   and replace it with an off-by-default module param to detected missed
   consistency checks (i.e. WARN if hardware finds a check that KVM does not).

 - Fix a currently-benign bug where KVM would drop the guest's SPEC_CTRL[63:32]
   on VM-Enter.

 - Misc cleanups.