Re: [PATCH v3 9/9] KVM: PPC: Book3S HV: Add tunable to control H_IPI redirection

2015-12-21 Thread Suresh E. Warrier
Redirecting the wakeup of a VCPU from the H_IPI hypercall to a core running in the host is usually a good idea, most workloads seemed to benefit. However, in one heavily interrupt-driven SMT1 workload, some regression was observed. This patch adds a kvm_hv module parameter called h_ipi_redirect to

[PATCH v3 9/9] KVM: PPC: Book3S HV: Add tunable to control H_IPI redirection

2015-12-17 Thread Suresh Warrier
Redirecting the wakeup of a VCPU from the H_IPI hypercall to a core running in the host is usually a good idea, most workloads seemed to benefit. However, in one heavily interrupt-driven SMT1 workload, some regression was observed. This patch adds a kvm_hv module parameter called h_ipi_redirect to