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* [PATCH 0/3] KVM/Hyper-V: Add Hyper-V direct tlb flush support
@ 2019-08-09  9:49 lantianyu1986
  2019-08-09  9:49 ` [PATCH 1/3] x86/Hyper-V: Fix definition of struct hv_vp_assist_page lantianyu1986
                   ` (2 more replies)
  0 siblings, 3 replies; 6+ messages in thread
From: lantianyu1986 @ 2019-08-09  9:49 UTC (permalink / raw)
  To: pbonzini, rkrcmar, corbet, kys, haiyangz, sthemmin, sashal, tglx,
	mingo, bp, hpa, x86, michael.h.kelley
  Cc: Tianyu Lan, kvm, linux-doc, linux-hyperv, linux-kernel, vkuznets

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"

Tianyu Lan (2):
  x86/Hyper-V: Fix definition of struct hv_vp_assist_page
  KVM/Hyper-V: Add new KVM cap KVM_CAP_HYPERV_DIRECT_TLBFLUSH

Vitaly Kuznetsov (1):
  KVM/Hyper-V/VMX: Add direct tlb flush support

 Documentation/virtual/kvm/api.txt  | 10 ++++++++++
 arch/x86/include/asm/hyperv-tlfs.h | 24 +++++++++++++++++++-----
 arch/x86/include/asm/kvm_host.h    |  2 ++
 arch/x86/kvm/vmx/evmcs.h           |  2 ++
 arch/x86/kvm/vmx/vmx.c             | 38 ++++++++++++++++++++++++++++++++++++++
 arch/x86/kvm/x86.c                 |  8 ++++++++
 include/linux/kvm_host.h           |  1 +
 include/uapi/linux/kvm.h           |  1 +
 8 files changed, 81 insertions(+), 5 deletions(-)

-- 
2.14.2


^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2019-08-09 10:44 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-08-09  9:49 [PATCH 0/3] KVM/Hyper-V: Add Hyper-V direct tlb flush support lantianyu1986
2019-08-09  9:49 ` [PATCH 1/3] x86/Hyper-V: Fix definition of struct hv_vp_assist_page lantianyu1986
2019-08-09 10:25   ` Vitaly Kuznetsov
2019-08-09  9:49 ` [PATCH 2/3] KVM/Hyper-V: Add new KVM cap KVM_CAP_HYPERV_DIRECT_TLBFLUSH lantianyu1986
2019-08-09 10:44   ` Vitaly Kuznetsov
2019-08-09  9:49 ` [PATCH 3/3] KVM/Hyper-V/VMX: Add direct tlb flush support lantianyu1986

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