Provide atomic KVM Memop for Key-Checked Compare-and-swap
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2183983
This provides an extension for KVM userspace application to do atomic compare-and-swap operations in guest memory. Tested it with the KVM selftests.
Signed-off-by: Thomas Huth thuth@redhat.com