On 1/12/21 12:58 PM, Andy Lutomirski wrote:
Andrew Cooper points out that there may be a nicer workaround. Make sure that the SMRAM and HT region (FFFD00000000 - FFFFFFFFFFFF) are marked as reserved in the guest, too.
In theory this proposed solution can avoid intercepting #GP. But in reality SMRAM regions can be different on different machines. So this solution can break after VM migration.