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| author |   Tianyu Lan <Tianyu.Lan@microsoft.com> | 2018-07-19 08:40:17 +0000 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2018-08-06 17:59:06 +0200 |
| commit | b08660e59dbdb600c55953787ed2265a0b510f77 (patch) | |
| tree | 3016620245ab6babe9c65babdcff9730f2578072 /include/linux/kvm_host.h | |
| parent | X86/Hyper-V: Add hyperv_nested_flush_guest_mapping ftrace support (diff) | |
| download | linux-dev-b08660e59dbdb600c55953787ed2265a0b510f77.tar.xz linux-dev-b08660e59dbdb600c55953787ed2265a0b510f77.zip | |
KVM: x86: Add tlb remote flush callback in kvm_x86_ops.
This patch is to provide a way for platforms to register hv tlb remote
flush callback and this helps to optimize operation of tlb flush
among vcpus for nested virtualization case.
Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/linux/kvm_host.h')
| -rw-r--r-- | include/linux/kvm_host.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 2840ac74a3d7..7c7362dd2faa 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -834,6 +834,13 @@ static inline void kvm_arch_free_vm(struct kvm *kvm) } #endif +#ifndef __KVM_HAVE_ARCH_FLUSH_REMOTE_TLB +static inline int kvm_arch_flush_remote_tlb(struct kvm *kvm) +{ + return -ENOTSUPP; +} +#endif + #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA void kvm_arch_register_noncoherent_dma(struct kvm *kvm); void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm); |