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-rw-r--r--target-arm/kvm_arm.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/target-arm/kvm_arm.h b/target-arm/kvm_arm.h
index 07f0c72199..345233c18b 100644
--- a/target-arm/kvm_arm.h
+++ b/target-arm/kvm_arm.h
@@ -124,9 +124,12 @@ void kvm_arm_reset_vcpu(ARMCPU *cpu);
* kvm_arm_create_scratch_host_vcpu:
* @cpus_to_try: array of QEMU_KVM_ARM_TARGET_* values (terminated with
* QEMU_KVM_ARM_TARGET_NONE) to try as fallback if the kernel does not
- * know the PREFERRED_TARGET ioctl
+ * know the PREFERRED_TARGET ioctl. Passing NULL is the same as passing
+ * an empty array.
* @fdarray: filled in with kvmfd, vmfd, cpufd file descriptors in that order
- * @init: filled in with the necessary values for creating a host vcpu
+ * @init: filled in with the necessary values for creating a host
+ * vcpu. If NULL is provided, will not init the vCPU (though the cpufd
+ * will still be set up).
*
* Create a scratch vcpu in its own VM of the type preferred by the host
* kernel (as would be used for '-cpu host'), for purposes of probing it