KVM: Break dependency between vcpu index in vcpus array and vcpu_id.

Archs are free to use vcpu_id as they see fit. For x86 it is used as
vcpu's apic id. New ioctl is added to configure boot vcpu id that was
assumed to be 0 till now.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index a5bd429e9bd3..d3fdf1a738c9 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -131,8 +131,12 @@ struct kvm {
         int nmemslots;
         struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
                                         KVM_PRIVATE_MEM_SLOTS];
+#ifdef CONFIG_KVM_APIC_ARCHITECTURE
+        u32 bsp_vcpu_id;
         struct kvm_vcpu *bsp_vcpu;
+#endif
         struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
+        atomic_t online_vcpus;
         struct list_head vm_list;
         struct mutex lock;
         struct kvm_io_bus mmio_bus;
@@ -550,8 +554,10 @@ static inline void kvm_irqfd_release(struct kvm *kvm) {}
 
 #endif /* CONFIG_HAVE_KVM_EVENTFD */
 
+#ifdef CONFIG_KVM_APIC_ARCHITECTURE
 static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu)
 {
         return vcpu->kvm->bsp_vcpu == vcpu;
 }
 #endif
+#endif