KVM: VMX: Don't expose PLE enable if there is no hardware support
KVM doesn't expose the PLE capability to the L1 hypervisor, however,
ple_window still shows the default value on L1 hypervisor. This patch
fixes it by clearing all the PLE related module parameter if there is
no PLE capability.
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 95a0160..941185e 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -6779,8 +6779,13 @@ static __init int hardware_setup(void)
if (enable_ept && !cpu_has_vmx_ept_2m_page())
kvm_disable_largepages();
- if (!cpu_has_vmx_ple())
+ if (!cpu_has_vmx_ple()) {
ple_gap = 0;
+ ple_window = 0;
+ ple_window_grow = 0;
+ ple_window_max = 0;
+ ple_window_shrink = 0;
+ }
if (!cpu_has_vmx_apicv()) {
enable_apicv = 0;