ARM: KVM: Implement kvm_vcpu_preferred_target() function
This patch implements kvm_vcpu_preferred_target() function for
KVM ARM which will help us implement KVM_ARM_PREFERRED_TARGET ioctl
for user space.
Signed-off-by: Anup Patel <anup.patel@linaro.org>
Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
(cherry picked from commit 4a6fee805d5e278e4733bf933cb5b184b7a8be1f)
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
diff --git a/arch/arm/kvm/guest.c b/arch/arm/kvm/guest.c
index 152d036..ec98209 100644
--- a/arch/arm/kvm/guest.c
+++ b/arch/arm/kvm/guest.c
@@ -222,6 +222,26 @@
return kvm_reset_vcpu(vcpu);
}
+int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init)
+{
+ int target = kvm_target_cpu();
+
+ if (target < 0)
+ return -ENODEV;
+
+ memset(init, 0, sizeof(*init));
+
+ /*
+ * For now, we don't return any features.
+ * In future, we might use features to return target
+ * specific features available for the preferred
+ * target type.
+ */
+ init->target = (__u32)target;
+
+ return 0;
+}
+
int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
{
return -EINVAL;