From 0f107682cb0398265d80237c353a6fa93161d219 Mon Sep 17 00:00:00 2001 From: Wanpeng Li Date: Thu, 28 Sep 2017 18:06:24 -0700 Subject: [PATCH] KVM: VMX: Don't expose PLE enable if there is no hardware support MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Cc: Paolo Bonzini Cc: Radim Krčmář Signed-off-by: Wanpeng Li Signed-off-by: Paolo Bonzini Signed-off-by: Radim Krčmář --- arch/x86/kvm/vmx.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 95a01609d7ee..941185e0606b 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; -- 2.30.2