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SubjectRe: [PATCH v2 15/28] KVM: VMX: Check CPU_BASED_{INTR,NMI}_WINDOW_EXITING in setup_vmcs_config()
On Wed, Jun 29, 2022 at 8:07 AM Vitaly Kuznetsov <> wrote:
> CPU_BASED_{INTR,NMI}_WINDOW_EXITING controls are toggled dynamically by
> vmx_enable_{irq,nmi}_window, handle_interrupt_window(), handle_nmi_window()
> but setup_vmcs_config() doesn't check their existence. Add the check and
> filter the controls out in vmx_exec_control().
> No (real) functional change intended as all existing CPUs supporting
> VMX are supposed to have these controls.

I'm pretty sure vIrtual NMIs and NMI-window exiting are not available
on Prescott or Yonah.

> Signed-off-by: Vitaly Kuznetsov <>
Reviewed-by: Jim Mattson <>

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