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KVM: keep track of which task is running a KVM vcpu

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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.

Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Rik van Riel 2011-02-01 09:52:41 -05:00 • committed by Marcelo Tosatti
parent 77c100c83e
commit 34bb10b79d
2 changed files with 11 additions and 0 deletions
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1
include/linux/kvm_host.h
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@ -122,6 +122,7 @@ struct kvm_vcpu {
int fpu_active;
int guest_fpu_loaded, guest_xcr0_loaded;
wait_queue_head_t wq;
struct pid *pid;
int sigset_active;
sigset_t sigset;
struct kvm_vcpu_stat stat;