APIC: Do not start zero-period timers (Jan Kiszka)
The APIC timer must not start when the initial count is (still) zero. This caused occasional stalls when booting secondary CPUs of Linux SMP guests. Signed-off-by: NJan Kiszka <jan.kiszka@web.de> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5024 c046a42c-6fe2-441c-8c8c-71466251a162
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