Signed-off-by: Gregory Haskins <[EMAIL PROTECTED]>
---
drivers/kvm/irqdevice.h | 3 +++
drivers/kvm/kvm.h | 1 +
drivers/kvm/lapic.c | 17 +++++++++++++++++
3 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/drivers/kvm/irqdevice.h b/drivers/kvm/irqdevice.h
index 097d179..173313d 100644
--- a/drivers/kvm/irqdevice.h
+++ b/drivers/kvm/irqdevice.h
@@ -45,12 +45,14 @@ struct kvm_irqsink {
#define KVM_IRQACKDATA_VECTOR_VALID (1 << 0)
#define KVM_IRQACKDATA_VECTOR_PENDING (1 << 1)
+#define KVM_IRQACKDATA_NEXT_VALID (1 << 2)
#define KVM_IRQACK_FLAG_PEEK (1 << 0)
struct kvm_irqack_data {
int flags;
int vector;
+ int next;
};
struct kvm_irqdevice {
@@ -92,6 +94,7 @@ static inline void kvm_irqdevice_init(struct kvm_irqdevice
*dev)
* data.flags -
* [KVM_IRQACKDATA_VECTOR_VALID - data.vector is valid]
* [KVM_IRQACKDATA_VECTOR_PENDING - more vectors are pending]
+ * [KVM_IRQACKDATA_NEXT_VALID - next-vector is valid]
*
* Returns: (int)
* [-1 = failure]
diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h
index 1f30274..76582e2 100644
--- a/drivers/kvm/kvm.h
+++ b/drivers/kvm/kvm.h
@@ -182,6 +182,7 @@ void kvm_lapic_save(struct kvm_vcpu *vcpu, struct kvm_sregs
*sregs);
void kvm_lapic_restore(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
void kvm_lapic_reset(struct kvm_vcpu *vcpu);
int kvm_lapic_enabled(struct kvm_vcpu *vcpu);
+void *kvm_lapic_get_regs(struct kvm_vcpu *vcpu);
/*
* x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
diff --git a/drivers/kvm/lapic.c b/drivers/kvm/lapic.c
index 9f0ab7e..602e94c 100644
--- a/drivers/kvm/lapic.c
+++ b/drivers/kvm/lapic.c
@@ -1154,6 +1154,13 @@ int kvm_lapic_enabled(struct kvm_vcpu *vcpu)
return ret;
}
+void *kvm_lapic_get_regs(struct kvm_vcpu *vcpu)
+{
+ struct kvm_kern_apic *apic = (struct kvm_kern_apic*)vcpu->apic.dev;
+ return apic->regs;
+}
+EXPORT_SYMBOL_GPL(kvm_lapic_get_regs);
+
/*
*----------------------------------------------------------------------
* timer interface
@@ -1286,6 +1293,16 @@ static int apic_irqdev_ack(struct kvm_irqdevice *this,
int flags,
if ((irq & 0xf0) > apic_get_reg(apic, APIC_PROCPRI))
data->flags |= KVM_IRQACKDATA_VECTOR_PENDING;
+ if (irq) {
+ /*
+ * We report the next pending vector here so that the system
+ * can assess TPR thresholds for TPR-shadowing purposes
+ * (if applicable)
+ */
+ data->next = irq;
+ data->flags |= KVM_IRQACKDATA_NEXT_VALID;
+ }
+
out:
spin_unlock_bh(&apic->lock);
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