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authorGleb Natapov <gleb@redhat.com>2009-06-09 15:56:28 +0300
committerAvi Kivity <avi@redhat.com>2009-09-10 08:32:52 +0300
commit73880c80aa9c8dc353cd0ad26579023213cd5314 (patch)
treed5bee5c87c3468feb941cc898e342f52c0adce19 /include/linux
parent1ed0ce000a6c20c36ec649e32fc24393ef418ed8 (diff)
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>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/kvm.h2
-rw-r--r--include/linux/kvm_host.h6
2 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index f1dada0519eb..5037e170a70d 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -430,6 +430,7 @@ struct kvm_trace_rec {
#ifdef __KVM_HAVE_PIT
#define KVM_CAP_PIT2 33
#endif
+#define KVM_CAP_SET_BOOT_CPU_ID 34
#ifdef KVM_CAP_IRQ_ROUTING
@@ -537,6 +538,7 @@ struct kvm_irqfd {
#define KVM_DEASSIGN_DEV_IRQ _IOW(KVMIO, 0x75, struct kvm_assigned_irq)
#define KVM_IRQFD _IOW(KVMIO, 0x76, struct kvm_irqfd)
#define KVM_CREATE_PIT2 _IOW(KVMIO, 0x77, struct kvm_pit_config)
+#define KVM_SET_BOOT_CPU_ID _IO(KVMIO, 0x78)
/*
* ioctls for vcpu fds
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