KVM: x86: hyperv: keep track of mismatched VP indexes

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In most common cases VP index of a vcpu matches its vcpu index. Userspace
is, however, free to set any mapping it wishes and we need to account for
that when we need to find a vCPU with a particular VP index. To keep search
algorithms optimal in both cases introduce 'num_mismatched_vp_indexes'
counter showing how many vCPUs with mismatching VP index we have. In case
the counter is zero we can assume vp_index == vcpu_idx.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Vitaly Kuznetsov 2018-09-26 19:02:56 +02:00 • committed by Paolo Bonzini

parent 1779a39f78

commit 87ee613d07

2 changed files with 26 additions and 3 deletions

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3

arch/x86/include/asm/kvm_host.h

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26

arch/x86/kvm/hyperv.c

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