x86: KVM guest: use paravirt function to calculate cpu khz

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We're currently facing timing problems in guests that do
calibration under heavy load, and then the load vanishes.
This means we'll have a much lower lpj than we actually should,
and delays end up taking less time than they should, which is a
nasty bug.

Solution is to pass on the lpj value from host to guest, and have it
preset.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

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Glauber Costa 2008-07-28 11:47:53 -03:00 • committed by Avi Kivity

parent 3807f345b2

commit 0293615f3f

1 changed files with 30 additions and 0 deletions

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arch/x86/kernel/kvmclock.c

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