On 05/03/21 02:10, Sean Christopherson wrote:
Use '0' to denote an invalid pae_root instead of '0' or INVALID_PAGE. Unlike root_hpa, the pae_roots hold permission bits and thus are guaranteed to be non-zero. Having to deal with both values leads to bugs, e.g. failing to set back to INVALID_PAGE, warning on the wrong value, etc...
I don't dispute this is a good idea, but it deserves one or more comments. Paolo
