linux_stm_patches.patch

diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index ca41220..7d5e795 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -825,6 +825,10 @@ struct kvm_ppc_resize_hpt {
 #define KVM_GET_API_VERSION       _IO(KVMIO,   0x00)
 #define KVM_CREATE_VM             _IO(KVMIO,   0x01) /* returns a VM fd */
 #define KVM_GET_MSR_INDEX_LIST    _IOWR(KVMIO, 0x02, struct kvm_msr_list)
+/* Bumps the KVM usage count for the STM */
+#define KVM_BUMP_USAGE_COUNT	  _IO(KVMIO,   0x20)
+/* Decrements the KVM usage count for STM breakdown */
+#define KVM_DEC_USAGE_COUNT	  _IO(KVMIO,   0x21)
 
 #define KVM_S390_ENABLE_SIE       _IO(KVMIO,   0x06)
 /*
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 9cd8ca2..77b82a1 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -4058,6 +4058,12 @@ static long kvm_dev_ioctl(struct file *filp,
 	case KVM_CHECK_EXTENSION:
 		r = kvm_vm_ioctl_check_extension_generic(NULL, arg);
 		break;
+	case KVM_BUMP_USAGE_COUNT:
+		kvm_usage_count++;
+		break;
+	case KVM_DEC_USAGE_COUNT:
+		kvm_usage_count--;
+		break;
 	case KVM_GET_VCPU_MMAP_SIZE:
 		if (arg)
 			goto out;