From: Wanpeng Li <wanpeng...@hotmail.com>
SDM mentioned:
"If either the “unrestricted guest” VM-execution control or the “mode-based
execute control for EPT” VM- execution control is 1, the “enable EPT”
VM-execution control must also be 1."
However, we can still observe unrestricted_guest is Y after inserting the
kvm-intel.ko
w/ ept=N. It depends on later starts a guest in order that the function
vmx_compute_secondary_exec_control() can be executed, then both the module
parameter
and exec control fields will be amended.
This patch fixes it by amending module parameter immediately during vmcs data
setup.
Cc: Paolo Bonzini <pbonz...@redhat.com>
Cc: Radim Krčmář <rkrc...@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng...@hotmail.com>
---
arch/x86/kvm/vmx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 244e366..3e664ca 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -6737,7 +6737,7 @@ static __init int hardware_setup(void)
if (!cpu_has_vmx_ept_ad_bits() || !enable_ept)
enable_ept_ad_bits = 0;
- if (!cpu_has_vmx_unrestricted_guest())
+ if (!cpu_has_vmx_unrestricted_guest() || !enable_ept)
enable_unrestricted_guest = 0;
if (!cpu_has_vmx_flexpriority())
--
2.7.4
