This series improves yielding on architectures that cannot disable preemption while entering the guest and makes the creating thread of a VCPU the owning thread and therefore the yield target when yielding to that VCPU.
We should focus on the case creating thread == executing thread and therefore remove the complicated handling of PIDs involving synchronize_rcus. This way we can speed up the creation of VCPUs and directly yield to the executing vcpu threads. Please note that - in theory - all VCPU ioctls should be triggered from the same VCPU thread, so changing threads is not a scenario we should optimize. David Hildenbrand (2): KVM: don't check for PF_VCPU when yielding KVM: thread creating a vcpu is the owner of that vcpu include/linux/kvm_host.h | 1 + virt/kvm/kvm_main.c | 22 ++-------------------- 2 files changed, 3 insertions(+), 20 deletions(-) -- 1.8.5.5 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
