From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: kvm@vger.kernel.org
Cc: "Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"Roman Kagan" <rkagan@virtuozzo.com>,
"K. Y. Srinivasan" <kys@microsoft.com>,
"Haiyang Zhang" <haiyangz@microsoft.com>,
"Stephen Hemminger" <sthemmin@microsoft.com>,
"Michael Kelley (EOSG)" <Michael.H.Kelley@microsoft.com>,
"Mohammed Gamal" <mmorsy@redhat.com>,
"Cathy Avery" <cavery@redhat.com>,
"Wanpeng Li" <wanpeng.li@hotmail.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH v5 0/5] KVM: x86: hyperv: PV IPI support for Windows guests
Date: Mon, 27 Aug 2018 18:48:53 +0200 [thread overview]
Message-ID: <20180827164858.12496-1-vkuznets@redhat.com> (raw)
Changes since v4:
- Rebase to the current kvm/next (KVM_CAP_HYPERV_SEND_IPI is now 159)
- Use 64 instead of 'BITS_PER_LONG' [Roman Kagan]
- Continue in case wrong VP ids or disabled APICs instead of bailing
[Roman Kagan]
Using hypercall for sending IPIs is faster because this allows to specify
any number of vCPUs (even > 64 with sparse CPU set), the whole procedure
will take only one VMEXIT.
Same as PV TLB flush, this allows Windows guests having > 64 vCPUs to boot
on KVM when Hyper-V extensions are enabled.
Vitaly Kuznetsov (5):
KVM: x86: hyperv: enforce vp_index < KVM_MAX_VCPUS
KVM: x86: hyperv: optimize 'all cpus' case in kvm_hv_flush_tlb()
KVM: x86: hyperv: use get_vcpu_by_vpidx() in kvm_hv_flush_tlb()
x86/hyper-v: rename ipi_arg_{ex,non_ex} structures
KVM: x86: hyperv: implement PV IPI send hypercalls
Documentation/virtual/kvm/api.txt | 7 ++
arch/x86/hyperv/hv_apic.c | 8 +-
arch/x86/include/asm/hyperv-tlfs.h | 16 +--
arch/x86/kvm/hyperv.c | 201 +++++++++++++++++++++++++++----------
arch/x86/kvm/trace.h | 42 ++++++++
arch/x86/kvm/x86.c | 1 +
include/uapi/linux/kvm.h | 1 +
virt/kvm/kvm_main.c | 6 +-
8 files changed, 214 insertions(+), 68 deletions(-)
--
2.14.4
next reply other threads:[~2018-08-27 16:49 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-27 16:48 Vitaly Kuznetsov [this message]
2018-08-27 16:48 ` [PATCH v5 1/5] KVM: x86: hyperv: enforce vp_index < KVM_MAX_VCPUS Vitaly Kuznetsov
2018-08-27 16:48 ` [PATCH v5 2/5] KVM: x86: hyperv: optimize 'all cpus' case in kvm_hv_flush_tlb() Vitaly Kuznetsov
2018-08-27 16:48 ` [PATCH v5 3/5] KVM: x86: hyperv: use get_vcpu_by_vpidx() " Vitaly Kuznetsov
2018-08-27 16:48 ` [PATCH v5 4/5] x86/hyper-v: rename ipi_arg_{ex,non_ex} structures Vitaly Kuznetsov
2018-09-14 17:37 ` Paolo Bonzini
2018-09-15 20:47 ` KY Srinivasan
2018-08-27 16:48 ` [PATCH v5 5/5] KVM: x86: hyperv: implement PV IPI send hypercalls Vitaly Kuznetsov
2018-08-28 17:55 ` Roman Kagan
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