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SubjectRe: [PATCH V4 0/3] KVM/Hyper-V: Add Hyper-V direct tlb flush support
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On 22/08/19 16:30, lantianyu1986@gmail.com wrote:
> From: Tianyu Lan <Tianyu.Lan@microsoft.com>
>
> This patchset is to add Hyper-V direct tlb support in KVM. Hyper-V
> in L0 can delegate L1 hypervisor to handle tlb flush request from
> L2 guest when direct tlb flush is enabled in L1.
>
> Patch 2 introduces new cap KVM_CAP_HYPERV_DIRECT_TLBFLUSH to enable
> feature from user space. User space should enable this feature only
> when Hyper-V hypervisor capability is exposed to guest and KVM profile
> is hided. There is a parameter conflict between KVM and Hyper-V hypercall.
> We hope L2 guest doesn't use KVM hypercall when the feature is
> enabled. Detail please see comment of new API "KVM_CAP_HYPERV_DIRECT_TLBFLUSH"
>
> Change since v3:
> - Update changelog in each patches.
>
> Change since v2:
> - Move hv assist page(hv_pa_pg) from struct kvm to struct kvm_hv.
>
> Change since v1:
> - Fix offset issue in the patch 1.
> - Update description of KVM KVM_CAP_HYPERV_DIRECT_TLBFLUSH.
>
> Tianyu Lan (2):
> x86/Hyper-V: Fix definition of struct hv_vp_assist_page
> KVM/Hyper-V: Add new KVM capability KVM_CAP_HYPERV_DIRECT_TLBFLUSH
>
> Vitaly Kuznetsov (1):
> KVM/Hyper-V/VMX: Add direct tlb flush support
>
> Documentation/virtual/kvm/api.txt | 13 +++++++++++++
> arch/x86/include/asm/hyperv-tlfs.h | 24 ++++++++++++++++++-----
> arch/x86/include/asm/kvm_host.h | 4 ++++
> arch/x86/kvm/vmx/evmcs.h | 2 ++
> arch/x86/kvm/vmx/vmx.c | 39 ++++++++++++++++++++++++++++++++++++++
> arch/x86/kvm/x86.c | 8 ++++++++
> include/uapi/linux/kvm.h | 1 +
> 7 files changed, 86 insertions(+), 5 deletions(-)
>

Queued, thanks.

Paolo

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