KVM: selftests: Support guest_memfd in-place conversion

With guest_memfd in-place conversion, the memory region can be set as
shared, eliminating the need for dual-backed memory.

By setting the region to shared initially, the KVM selftest framework
can populate the mmap()-ed guest_memfd memory just like any standard
memory provider.

For CoCo VMs, pages that need to be private are explicitly set to
private before executing the VM.

Signed-off-by: Lisa Wang <wyihan@google.com>
Link: https://patch.msgid.link/20261001-tdx-selftests-v15-13-7c62a5d8a992@google.com
[sean: anchor comment to its relevant place, drop unnecessary code changes]
Signed-off-by: Sean Christopherson <seanjc@google.com>

0 files changed, 0 insertions, 0 deletions