KVM: ia64: dynamic nr online cpus

Account for number of online cpus and use that in loops iterating over
the list of vpus instead of scanning the full array unconditionally.
This patch is a building block to facilitate allowing to bump up
the size of MAX_VCPUS significantly.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Acked-by : Xiantao Zhang  <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/arch/ia64/kvm/vcpu.c b/arch/ia64/kvm/vcpu.c
index 4d8be4c252fa..d4d280505878 100644
--- a/arch/ia64/kvm/vcpu.c
+++ b/arch/ia64/kvm/vcpu.c
@@ -807,12 +807,15 @@ static inline void vcpu_set_itm(struct kvm_vcpu *vcpu, u64 val);
 static void vcpu_set_itc(struct kvm_vcpu *vcpu, u64 val)
 {
         struct kvm_vcpu *v;
+        struct kvm *kvm;
         int i;
         long itc_offset = val - ia64_getreg(_IA64_REG_AR_ITC);
         unsigned long vitv = VCPU(vcpu, itv);
 
+        kvm = (struct kvm *)KVM_VM_BASE;
+
         if (vcpu->vcpu_id == 0) {
-                for (i = 0; i < KVM_MAX_VCPUS; i++) {
+                for (i = 0; i < kvm->arch.online_vcpus; i++) {
                         v = (struct kvm_vcpu *)((char *)vcpu +
                                         sizeof(struct kvm_vcpu_data) * i);
                         VMX(v, itc_offset) = itc_offset;