Commit 0f107682 authored Sep 28, 2017 by Wanpeng Li Committed by Paolo Bonzini Oct 12, 2017

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>

parent 8a60aea6

arch/x86/kvm/vmx.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -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;

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