[PATCH v5 1/3] KVM: fix steal clock warp during guest cpu hotplug

From: Wanpeng Li Sometimes, after CPU hotplug you can observe a spike in stolen time (100%) followed by the CPU being marked as 100% idle when it's actually busy with a CPU hog task. The trace looks like the following: cpuhp/1-12[001] d.h1 167.461657:

[PATCH v5 1/3] KVM: fix steal clock warp during guest cpu hotplug

From: Wanpeng Li Sometimes, after CPU hotplug you can observe a spike in stolen time (100%) followed by the CPU being marked as 100% idle when it's actually busy with a CPU hog task. The trace looks like the following: cpuhp/1-12[001] d.h1 167.461657: account_process_tick: steal =