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KVM: Add "exiting guest mode" state
[pandora-kernel.git]
/
include
/
linux
/
kvm_host.h
diff --git
a/include/linux/kvm_host.h
b/include/linux/kvm_host.h
index
b5021db
..
b99eacd
100644
(file)
--- a/
include/linux/kvm_host.h
+++ b/
include/linux/kvm_host.h
@@
-98,19
+98,26
@@
int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn,
int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu);
#endif
int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu);
#endif
+enum {
+ OUTSIDE_GUEST_MODE,
+ IN_GUEST_MODE,
+ EXITING_GUEST_MODE
+};
+
struct kvm_vcpu {
struct kvm *kvm;
#ifdef CONFIG_PREEMPT_NOTIFIERS
struct preempt_notifier preempt_notifier;
#endif
struct kvm_vcpu {
struct kvm *kvm;
#ifdef CONFIG_PREEMPT_NOTIFIERS
struct preempt_notifier preempt_notifier;
#endif
+ int cpu;
int vcpu_id;
int vcpu_id;
- struct mutex mutex;
- int cpu;
- atomic_t guest_mode;
- struct kvm_run *run;
+ int srcu_idx;
+ int mode;
unsigned long requests;
unsigned long guest_debug;
unsigned long requests;
unsigned long guest_debug;
- int srcu_idx;
+
+ struct mutex mutex;
+ struct kvm_run *run;
int fpu_active;
int guest_fpu_loaded, guest_xcr0_loaded;
int fpu_active;
int guest_fpu_loaded, guest_xcr0_loaded;
@@
-140,6
+147,11
@@
struct kvm_vcpu {
struct kvm_vcpu_arch arch;
};
struct kvm_vcpu_arch arch;
};
+static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu)
+{
+ return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE);
+}
+
/*
* Some of the bitops functions do not support too long bitmaps.
* This number must be determined not to exceed such limits.
/*
* Some of the bitops functions do not support too long bitmaps.
* This number must be determined not to exceed such limits.