KVM: vmx: Add tlb_remote_flush callback support
Register tlb_remote_flush callback for vmx when hyperv capability of nested guest mapping flush is detected. The interface can help to reduce overhead when flush ept table among vcpus for nested VM. The tradition way is to send IPIs to all affected vcpus and executes INVEPT on each vcpus. It will trigger several vmexits for IPI and INVEPT emulation. Hyper-V provides such hypercall to do flush for all vcpus and call the hypercall when all ept table pointers of single VM are same. Signed-off-by:Lan Tianyu <Tianyu.Lan@microsoft.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com>
parent
b08660e5
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