Asynchronous management of unencrypted memory page list of a virtual machine

A system comprising:

• a memory;
• a processing device operatively coupled to the memory, the processing device to:
• receive, as part of a migration process of a virtual machine (VM), two copies of a memory page of the VM, the two copies comprising:
• a decrypted copy of the memory page;
• and
• an unencrypted copy of the memory page;
• cause the VM to execute a VM resume code, wherein executing the VM resume code comprises:
• determining whether the memory page is unencrypted based on a page table of the VM;
• and
• responsive to determining that the memory page is unencrypted, copy the unencrypted copy of the memory page to a guest memory address.

A non-transitory computer-readable media storing instructions that, when executed, cause a processing device to:

• receive, as part of a migration process of a virtual machine (VM), two copies of a memory page of the VM, the two copies comprising:
• a decrypted copy of the memory page;
• and
• an unencrypted copy of the memory page;
• cause the VM to execute a VM resume code, wherein executing the VM resume code comprises:
• determining whether the memory page is unencrypted based on a page table of the VM;
• and
• responsive to determining that the memory page is unencrypted, copy the unencrypted copy of the memory page to a guest memory address.