According to section "Checks on VMX Controls" in Intel SDM vol 3C, the
following check needs to be enforced on vmentry of L2 guests:
If the "activate VMX-preemption timer" VM-execution control is 0, the
the "save VMX-preemption timer value" VM-exit control must also be 0.
The first patch adds the required KVM check while the second one adds a
KVM unit test.
[PATCH 1/2] nVMX x86: Check VMX-preemption timer controls on vmentry of
[PATCH 2/2][kvm-unit-test] nVMX x86: Check VMX-preemption timer controls on
arch/x86/kvm/vmx.c | 10 ++++++++++
1 file changed, 10 insertions(+)
Krish Sadhukhan (1):
nVMX x86: Check VMX-preemption timer controls on vmentry of L2 guests
x86/vmx_tests.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 50 insertions(+)
Krish Sadhukhan (1):
nVMX x86: Check VMX-preemption timer controls on vmentry of L2 guests
