Patch# 1 adds the necessary KVM checks while patch# 2 adds the kvm-unit-tests. Note that patch# 2 only tests those scenarios in which the "Host Address-Space Size" VM-Exit control field can only be 1 as nested guests are 64-bit only. [PATCH 1/2] KVM: nVMX: Check Host Address Space Size on vmentry of nested [PATCH 2/2] kvm-unit-test: nVMX: Check Host Address Space Size on vmentry of nested arch/x86/kvm/vmx/nested.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) Krish Sadhukhan (1): nVMX: Check Host Address Space Size on vmentry of nested guests x86/vmx_tests.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) Krish Sadhukhan (1): nVMX: Check Host Address Space Size on vmentry of nested guests