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i386/kvm: add support for Hyper-V IPI send

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Hyper-V PV IPI support is merged to KVM, enable the feature in Qemu. When
enabled, this allows Windows guests to send IPIs to other vCPUs with a
single hypercall even when there are >64 vCPUs in the request.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20181009130853.6412-3-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Vitaly Kuznetsov 2018-10-09 15:08:53 +02:00 • committed by Paolo Bonzini
parent ca9759c2a9
commit 6b7a98303b
4 changed files with 16 additions and 1 deletions
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1
target/i386/cpu.h
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@ -1382,6 +1382,7 @@ struct X86CPU {
bool hyperv_frequencies;
bool hyperv_reenlightenment;
bool hyperv_tlbflush;
bool hyperv_ipi;
bool check_cpuid;
bool enforce_cpuid;
bool expose_kvm;