On Tue, Sep 26, 2017 at 11:34:22PM -0700, Wanpeng Li wrote: > From: Wanpeng Li <[email protected]> > > PLE_Window: Software can configure this field as an upper bound on the amount > of time > a guest is allowed to execute in a PAUSE LOOP. > > KVM doesn't expose the PLE capability to the L1 hypervsior, however, > ple_window still
s/hypervsior/hypervisor/ > shows the default value on L1 hypervsior. This patch fixes it by clearing all > the Ditto here. > PLE related module parameter if there is no PLE capability. > > Cc: Paolo Bonzini <[email protected]> > Cc: Radim Krčmář <[email protected]> > Signed-off-by: Wanpeng Li <[email protected]> Reviewed-by: Konrad Rzeszutek Wilk <[email protected]> > --- > 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 c83d28b..4d4f9b4 100644 > --- a/arch/x86/kvm/vmx.c > +++ b/arch/x86/kvm/vmx.c > @@ -6781,8 +6781,13 @@ 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; > -- > 2.7.4 >
