tree c5914bdd31fcc5a5c9fdcde1b4de5ce8024ef907
parent 7a83247e010a2881ee246a88596af0549ef3e6c4
author Tianyu Lan <Tianyu.Lan@microsoft.com> 1566484220 +0800
committer Paolo Bonzini <pbonzini@redhat.com> 1569325033 +0200

KVM/Hyper-V: Add new KVM capability KVM_CAP_HYPERV_DIRECT_TLBFLUSH

Hyper-V direct tlb flush function should be enabled for
guest that only uses Hyper-V hypercall. User space
hypervisor(e.g, Qemu) can disable KVM identification in
CPUID and just exposes Hyper-V identification to make
sure the precondition. Add new KVM capability KVM_CAP_
HYPERV_DIRECT_TLBFLUSH for user space to enable Hyper-V
direct tlb function and this function is default to be
disabled in KVM.

Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>