1 files changed, 21 insertions, 0 deletions

diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 82634a492fe0..0e16f2c9f0de 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -365,6 +365,24 @@ struct kvm_translation {
         __u8  pad[5];
 };
 
+/* for KVM_S390_MEM_OP */
+struct kvm_s390_mem_op {
+        /* in */
+        __u64 gaddr;            /* the guest address */
+        __u64 flags;            /* flags */
+        __u32 size;             /* amount of bytes */
+        __u32 op;               /* type of operation */
+        __u64 buf;              /* buffer in userspace */
+        __u8 ar;                /* the access register number */
+        __u8 reserved[31];      /* should be set to 0 */
+};
+/* types for kvm_s390_mem_op->op */
+#define KVM_S390_MEMOP_LOGICAL_READ     0
+#define KVM_S390_MEMOP_LOGICAL_WRITE    1
+/* flags for kvm_s390_mem_op->flags */
+#define KVM_S390_MEMOP_F_CHECK_ONLY             (1ULL << 0)
+#define KVM_S390_MEMOP_F_INJECT_EXCEPTION       (1ULL << 1)
+
 /* for KVM_INTERRUPT */
 struct kvm_interrupt {
         /* in */
@@ -761,6 +779,7 @@ struct kvm_ppc_smmu_info {
 #define KVM_CAP_CHECK_EXTENSION_VM 105
 #define KVM_CAP_S390_USER_SIGP 106
 #define KVM_CAP_S390_VECTOR_REGISTERS 107
+#define KVM_CAP_S390_MEM_OP 108
 
 #ifdef KVM_CAP_IRQ_ROUTING
 
@@ -1136,6 +1155,8 @@ struct kvm_s390_ucas_mapping {
 #define KVM_ARM_VCPU_INIT         _IOW(KVMIO,  0xae, struct kvm_vcpu_init)
 #define KVM_ARM_PREFERRED_TARGET  _IOR(KVMIO,  0xaf, struct kvm_vcpu_init)
 #define KVM_GET_REG_LIST          _IOWR(KVMIO, 0xb0, struct kvm_reg_list)
+/* Available with KVM_CAP_S390_MEM_OP */
+#define KVM_S390_MEM_OP           _IOW(KVMIO,  0xb1, struct kvm_s390_mem_op)
 
 #define KVM_DEV_ASSIGN_ENABLE_IOMMU     (1 << 0)
 #define KVM_DEV_ASSIGN_PCI_2_3          (1 << 1)