KVM: PPC: booke: category E.HV (GS-mode) support
Chips such as e500mc that implement category E.HV in Power ISA 2.06
provide hardware virtualization features, including a new MSR mode for
guest state. The guest OS can perform many operations without trapping
into the hypervisor, including transitions to and from guest userspace.
Since we can use SRR1[GS] to reliably tell whether an exception came from
guest state, instead of messing around with IVPR, we use DO_KVM similarly
to book3s.
Current issues include:
- Machine checks from guest state are not routed to the host handler.
- The guest can cause a host oops by executing an emulated instruction
in a page that lacks read permission. Existing e500/4xx support has
the same problem.
Includes work by Ashish Kalra <Ashish.Kalra@freescale.com>,
Varun Sethi <Varun.Sethi@freescale.com>, and
Liu Yu <yu.liu@freescale.com>.
Signed-off-by: Scott Wood <scottwood@freescale.com>
[agraf: remove pt_regs usage]
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/powerpc/kvm/booke.h b/arch/powerpc/kvm/booke.h
index 05d1d99..d53bcf2 100644
--- a/arch/powerpc/kvm/booke.h
+++ b/arch/powerpc/kvm/booke.h
@@ -48,7 +48,20 @@
#define BOOKE_IRQPRIO_PERFORMANCE_MONITOR 19
/* Internal pseudo-irqprio for level triggered externals */
#define BOOKE_IRQPRIO_EXTERNAL_LEVEL 20
-#define BOOKE_IRQPRIO_MAX 20
+#define BOOKE_IRQPRIO_DBELL 21
+#define BOOKE_IRQPRIO_DBELL_CRIT 22
+#define BOOKE_IRQPRIO_MAX 23
+
+#define BOOKE_IRQMASK_EE ((1 << BOOKE_IRQPRIO_EXTERNAL_LEVEL) | \
+ (1 << BOOKE_IRQPRIO_PERFORMANCE_MONITOR) | \
+ (1 << BOOKE_IRQPRIO_DBELL) | \
+ (1 << BOOKE_IRQPRIO_DECREMENTER) | \
+ (1 << BOOKE_IRQPRIO_FIT) | \
+ (1 << BOOKE_IRQPRIO_EXTERNAL))
+
+#define BOOKE_IRQMASK_CE ((1 << BOOKE_IRQPRIO_DBELL_CRIT) | \
+ (1 << BOOKE_IRQPRIO_WATCHDOG) | \
+ (1 << BOOKE_IRQPRIO_CRITICAL))
extern unsigned long kvmppc_booke_handlers;
@@ -74,4 +87,13 @@
void kvmppc_booke_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
void kvmppc_booke_vcpu_put(struct kvm_vcpu *vcpu);
+enum int_class {
+ INT_CLASS_NONCRIT,
+ INT_CLASS_CRIT,
+ INT_CLASS_MC,
+ INT_CLASS_DBG,
+};
+
+void kvmppc_set_pending_interrupt(struct kvm_vcpu *vcpu, enum int_class type);
+
#endif /* __KVM_BOOKE_H__ */