• Tiejun Chen's avatar
    kvm: x86: vmx: NULL out hwapic_isr_update() in case of !enable_apicv · b4eef9b3
    Tiejun Chen authored
    In most cases calling hwapic_isr_update(), we always check if
    kvm_apic_vid_enabled() == 1, but actually,
    kvm_apic_vid_enabled()
        -> kvm_x86_ops->vm_has_apicv()
            -> vmx_vm_has_apicv() or '0' in svm case
                -> return enable_apicv && irqchip_in_kernel(kvm)
    
    So its a little cost to recall vmx_vm_has_apicv() inside
    hwapic_isr_update(), here just NULL out hwapic_isr_update() in
    case of !enable_apicv inside hardware_setup() then make all
    related stuffs follow this. Note we don't check this under that
    condition of irqchip_in_kernel() since we should make sure
    definitely any caller don't work  without in-kernel irqchip.
    Signed-off-by: default avatarTiejun Chen <tiejun.chen@intel.com>
    Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
    b4eef9b3
vmx.c 271 KB