Re: [PATCH 1/3] KVM: make halt_poll_ns per-VCPU

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On 8/25/15 12:59 AM, David Matlack wrote:
On Mon, Aug 24, 2015 at 5:53 AM, Wanpeng Li <wanpeng.li@xxxxxxxxxxx> wrote:
Change halt_poll_ns into per-VCPU variable, seeded from module parameter,
to allow greater flexibility.
You should also change kvm_vcpu_block to read halt_poll_ns from
the vcpu instead of the module parameter.

Indeed, thanks for your review. :-)

Regards,
Wanpeng Li


Signed-off-by: Wanpeng Li <wanpeng.li@xxxxxxxxxxx>
---
  include/linux/kvm_host.h | 1 +
  virt/kvm/kvm_main.c      | 1 +
  2 files changed, 2 insertions(+)

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 81089cf..1bef9e2 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -242,6 +242,7 @@ struct kvm_vcpu {
         int sigset_active;
         sigset_t sigset;
         struct kvm_vcpu_stat stat;
+       unsigned int halt_poll_ns;

  #ifdef CONFIG_HAS_IOMEM
         int mmio_needed;
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index d8db2f8f..a122b52 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -217,6 +217,7 @@ int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id)
         vcpu->kvm = kvm;
         vcpu->vcpu_id = id;
         vcpu->pid = NULL;
+       vcpu->halt_poll_ns = halt_poll_ns;
         init_waitqueue_head(&vcpu->wq);
         kvm_async_pf_vcpu_init(vcpu);

--
1.9.1

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