KVM: x86: Add helper functions for time computation

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Add a helper function to compute the kernel time and convert nanoseconds
back to CPU specific cycles.  Note that these must not be called in preemptible
context, as that would mean the kernel could enter software suspend state,
which would cause non-atomic operation.

Also, convert the KVM_SET_CLOCK / KVM_GET_CLOCK ioctls to use the kernel
time helper, these should be bootbased as well.

Signed-off-by: Zachary Amsden <zamsden@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

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Zachary Amsden 2010-08-19 22:07:25 -10:00 • committed by Avi Kivity

parent 48434c20e1

commit 759379dd68

1 changed files with 28 additions and 20 deletions

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arch/x86/kvm/x86.c

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