On 08/20/2010 07:34 AM, Glauber Costa wrote:
On Thu, Aug 19, 2010 at 10:07:25PM -1000, Zachary Amsden wrote:
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.
This is one of the things I believe should be applied right now.
Maybe we want a cut version of this patch, that exposes this API while
adjusting KVM_SET_CLOCK / KVM_GET_CLOCK to get in early rather than late?
The first half of the series, at least, is good to go upstream and ready
for backport. The trapping and later stuff obviously needs to get some
upstream testing.
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