Re: [RFC PATCH 1/3] kvm: keep track of which task is running a KVMvcpu

From: Rik van Riel
Date: Fri Dec 03 2010 - 09:50:52 EST


On 12/02/2010 08:18 PM, Chris Wright wrote:
* Rik van Riel (riel@xxxxxxxxxx) wrote:
Keep track of which task is running a KVM vcpu. This helps us
figure out later what task to wake up if we want to boost a
vcpu that got preempted.

Unfortunately there are no guarantees that the same task
always keeps the same vcpu, so we can only track the task
across a single "run" of the vcpu.

So shouldn't it confine to KVM_RUN? The other vcpu_load callers aren't
always a vcpu in a useful runnable state.

Yeah, probably. If you want I can move the setting of
vcpu->task to kvm_vcpu_ioctl.

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