Signed-off-by: Sheng Yang <sheng@xxxxxxxxxxxxxxx>
---
qemu-kvm.c | 16 ++++++++++++++++
qemu-kvm.h | 8 ++++++++
2 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/qemu-kvm.c b/qemu-kvm.c
index 733d0a9..fbb68f6 100644
--- a/qemu-kvm.c
+++ b/qemu-kvm.c
@@ -540,6 +540,22 @@ int kvm_set_xcrs(CPUState *env, struct kvm_xcrs *xcrs)
}
#endif
+#ifdef KVM_CAP_ENABLE_CAP
+int kvm_enable_cap(CPUState *env, uint32_t cap)
+{
+ int r = 0;
+ struct kvm_enable_cap enable_cap = {
+ .cap = cap,
+ .flags = 0,
+ };
+
+ r = kvm_ioctl(kvm_state, KVM_CHECK_EXTENSION, KVM_CAP_ENABLE_CAP);
+ if (r > 0)
+ r = kvm_vcpu_ioctl(env, KVM_ENABLE_CAP, &enable_cap);
+ return r;
+}
+#endif
+
static int handle_mmio(CPUState *env)
{
unsigned long addr = env->kvm_run->mmio.phys_addr;
diff --git a/qemu-kvm.h b/qemu-kvm.h
index 9c08ab4..5cac0c2 100644
--- a/qemu-kvm.h
+++ b/qemu-kvm.h
@@ -316,6 +316,14 @@ int kvm_get_xcrs(CPUState *env, struct kvm_xcrs *xcrs);
int kvm_set_xcrs(CPUState *env, struct kvm_xcrs *xcrs);
#endif
+#ifdef KVM_ENABLE_CAP
+/*!
+ * * \brief Enable specific capability of KVM
+ *
+ */
+int kvm_enable_cap(CPUState *env, uint32_t cap);
+#endif
+
/*!
* \brief Simulate an external vectored interrupt
*
--
1.7.0.1
--
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