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From Hyper-V TLFS: "The hypervisor exposes hypercalls (HvFlushVirtualAddressSpace, HvFlushVirtualAddressSpaceEx, HvFlushVirtualAddressList, and HvFlushVirtualAddressListEx) that allow operating systems to more efficiently manage the virtual TLB. The L1 hypervisor can choose to allow its guest to use those hypercalls and delegate the responsibility to handle them to the L0 hypervisor. This requires the use of a partition assist page." Add the Direct Virtual Flush support for SVM. Related VMX changes: commit 6f6a657c9998 ("KVM/Hyper-V/VMX: Add direct tlb flush support") Signed-off-by: Vineeth Pillai <viremana@linux.microsoft.com> Message-Id: <fc8d24d8eb7017266bb961e39a171b0caf298d7f.1622730232.git.viremana@linux.microsoft.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>