KVM: x86: add KVM_HC_CLOCK_PAIRING hypercall

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Add a hypercall to retrieve the host realtime clock and the TSC value
used to calculate that clock read.

Used to implement clock synchronization between host and guest.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Marcelo Tosatti 2017-01-24 15:09:39 -02:00 • committed by Paolo Bonzini

parent 6342c50ad1

commit 55dd00a73a

4 changed files with 112 additions and 0 deletions

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35

Documentation/virtual/kvm/hypercalls.txt

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9

arch/x86/include/uapi/asm/kvm_para.h

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66

arch/x86/kvm/x86.c

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2

include/uapi/linux/kvm_para.h

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