Re: [PATCH 17/15] KVM: X86: Ensure pae_root to be reconstructed for shadow paging if the guest PDPTEs is changed

From: Paolo Bonzini
Date: Sat Dec 11 2021 - 03:22:22 EST


On 12/11/21 07:56, Maxim Levitsky wrote:
This apparently wasn't validated against a simple use case, let
alone against things like migration with nested VMs, multliple L2s,
etc...

I did validate the *SREGS2* against all the cases I could (like
migration, EPT/NPT disabled/etc. I even started testing SMM to see
how it affects PDPTRs, and patched seabios to use PAE paging. I still
could have missed something.

Don't worry, I think Sean was talking about patch 16 and specifically
digging at me (who deserved it completely).

Paolo