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authorWanpeng Li <wanpeng.li@hotmail.com>2015-09-03 22:07:37 +0800
committerPaolo Bonzini <pbonzini@redhat.com>2015-09-06 16:27:10 +0200
commit19020f8ab83de9dc5a9c8af1f321a526f38bbc40 (patch)
tree6dfa3d1f6971920cb697cade899328e13fb7bc19 /virt
parente8dd2d2d641cb2724ee10e76c0ad02e04289c017 (diff)
downloadblackbird-op-linux-19020f8ab83de9dc5a9c8af1f321a526f38bbc40.tar.gz
blackbird-op-linux-19020f8ab83de9dc5a9c8af1f321a526f38bbc40.zip
KVM: make halt_poll_ns per-vCPU
Change halt_poll_ns into per-VCPU variable, seeded from module parameter, to allow greater flexibility. Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/kvm_main.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index d8db2f8fce9c..c06e57cd1269 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 = 0;
init_waitqueue_head(&vcpu->wq);
kvm_async_pf_vcpu_init(vcpu);
@@ -1930,8 +1931,8 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu)
bool waited = false;
start = cur = ktime_get();
- if (halt_poll_ns) {
- ktime_t stop = ktime_add_ns(ktime_get(), halt_poll_ns);
+ if (vcpu->halt_poll_ns) {
+ ktime_t stop = ktime_add_ns(ktime_get(), vcpu->halt_poll_ns);
do {
/*
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