Avi Kivity <avi-atKUWr5tajBWk0Htik3J/[email protected]> writes:
> diff --git a/include/linux/sched.h b/include/linux/sched.h
> index 693f0e6..b705876 100644
> --- a/include/linux/sched.h
> +++ b/include/linux/sched.h
> @@ -875,6 +875,10 @@ struct task_struct {
> pid_t pid;
> pid_t tgid;
>
> +#ifdef CONFIG_SCHED_KVM
> + struct kvm_vcpu *kvm_vcpu;
> +#endif
You should be careful to put this into a cache line that
is already touched during context switch. Otherwise
if it needs an additional cache miss it might become
very costly
Also it's a bit worrying to expose hooks into the scheduler
to any modules. How would others be stopped from abusing this?
-Andi
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