diff --git a/lib/s390x/asm/uv.h b/lib/s390x/asm/uv.h
index dc3e02d..96a2a7e 100644
--- a/lib/s390x/asm/uv.h
+++ b/lib/s390x/asm/uv.h
@@ -12,6 +12,8 @@
 #ifndef _ASMS390X_UV_H_
 #define _ASMS390X_UV_H_
 
+#include <stdint.h>
+
 #define UVC_RC_EXECUTED		0x0001
 #define UVC_RC_INV_CMD		0x0002
 #define UVC_RC_INV_STATE	0x0003
@@ -68,73 +70,73 @@ enum uv_cmds_inst {
 };
 
 struct uv_cb_header {
-	u16 len;
-	u16 cmd;	/* Command Code */
-	u16 rc;		/* Response Code */
-	u16 rrc;	/* Return Reason Code */
+	uint16_t len;
+	uint16_t cmd;	/* Command Code */
+	uint16_t rc;	/* Response Code */
+	uint16_t rrc;	/* Return Reason Code */
 } __attribute__((packed))  __attribute__((aligned(8)));
 
 struct uv_cb_init {
 	struct uv_cb_header header;
-	u64 reserved08[2];
-	u64 stor_origin;
-	u64 stor_len;
-	u64 reserved28[4];
+	uint64_t reserved08[2];
+	uint64_t stor_origin;
+	uint64_t stor_len;
+	uint64_t reserved28[4];
 
 } __attribute__((packed))  __attribute__((aligned(8)));
 
 struct uv_cb_qui {
 	struct uv_cb_header header;
-	u64 reserved08;
-	u64 inst_calls_list[4];
-	u64 reserved30[2];
-	u64 uv_base_stor_len;
-	u64 reserved48;
-	u64 conf_base_phys_stor_len;
-	u64 conf_base_virt_stor_len;
-	u64 conf_virt_var_stor_len;
-	u64 cpu_stor_len;
-	u32 reserved70[3];
-	u32 max_num_sec_conf;
-	u64 max_guest_stor_addr;
-	u8  reserved88[158 - 136];
-	u16 max_guest_cpus;
-	u8  reserveda0[200 - 160];
+	uint64_t reserved08;
+	uint64_t inst_calls_list[4];
+	uint64_t reserved30[2];
+	uint64_t uv_base_stor_len;
+	uint64_t reserved48;
+	uint64_t conf_base_phys_stor_len;
+	uint64_t conf_base_virt_stor_len;
+	uint64_t conf_virt_var_stor_len;
+	uint64_t cpu_stor_len;
+	uint32_t reserved70[3];
+	uint32_t max_num_sec_conf;
+	uint64_t max_guest_stor_addr;
+	uint8_t  reserved88[158 - 136];
+	uint16_t max_guest_cpus;
+	uint8_t  reserveda0[200 - 160];
 }  __attribute__((packed))  __attribute__((aligned(8)));
 
 struct uv_cb_cgc {
 	struct uv_cb_header header;
-	u64 reserved08[2];
-	u64 guest_handle;
-	u64 conf_base_stor_origin;
-	u64 conf_var_stor_origin;
-	u64 reserved30;
-	u64 guest_stor_origin;
-	u64 guest_stor_len;
-	u64 guest_sca;
-	u64 guest_asce;
-	u64 reserved60[5];
+	uint64_t reserved08[2];
+	uint64_t guest_handle;
+	uint64_t conf_base_stor_origin;
+	uint64_t conf_var_stor_origin;
+	uint64_t reserved30;
+	uint64_t guest_stor_origin;
+	uint64_t guest_stor_len;
+	uint64_t guest_sca;
+	uint64_t guest_asce;
+	uint64_t reserved60[5];
 } __attribute__((packed))  __attribute__((aligned(8)));
 
 struct uv_cb_csc {
 	struct uv_cb_header header;
-	u64 reserved08[2];
-	u64 cpu_handle;
-	u64 guest_handle;
-	u64 stor_origin;
-	u8  reserved30[6];
-	u16 num;
-	u64 state_origin;
-	u64 reserved[4];
+	uint64_t reserved08[2];
+	uint64_t cpu_handle;
+	uint64_t guest_handle;
+	uint64_t stor_origin;
+	uint8_t  reserved30[6];
+	uint16_t num;
+	uint64_t state_origin;
+	uint64_t reserved[4];
 } __attribute__((packed))  __attribute__((aligned(8)));
 
 struct uv_cb_unp {
 	struct uv_cb_header header;
-	u64 reserved08[2];
-	u64 guest_handle;
-	u64 gaddr;
-	u64 tweak[2];
-	u64 reserved38[3];
+	uint64_t reserved08[2];
+	uint64_t guest_handle;
+	uint64_t gaddr;
+	uint64_t tweak[2];
+	uint64_t reserved38[3];
 } __attribute__((packed))  __attribute__((aligned(8)));
 
 /*
@@ -144,42 +146,42 @@ struct uv_cb_unp {
  */
 struct uv_cb_nodata {
 	struct uv_cb_header header;
-	u64 reserved08[2];
-	u64 handle;
-	u64 reserved20[4];
+	uint64_t reserved08[2];
+	uint64_t handle;
+	uint64_t reserved20[4];
 }  __attribute__((packed))  __attribute__((aligned(8)));
 
 struct uv_cb_share {
 	struct uv_cb_header header;
-	u64 reserved08[3];
-	u64 paddr;
-	u64 reserved28;
+	uint64_t reserved08[3];
+	uint64_t paddr;
+	uint64_t reserved28;
 } __attribute__((packed))  __attribute__((aligned(8)));
 
 /* Convert to Secure */
 struct uv_cb_cts {
 	struct uv_cb_header header;
-	u64 reserved08[2];
-	u64 guest_handle;
-	u64 gaddr;
+	uint64_t reserved08[2];
+	uint64_t guest_handle;
+	uint64_t gaddr;
 }  __attribute__((packed))  __attribute__((aligned(8)));
 
 /* Convert from Secure / Pin Page Shared */
 struct uv_cb_cfs {
 	struct uv_cb_header header;
-	u64 reserved08[2];
-	u64 paddr;
+	uint64_t reserved08[2];
+	uint64_t paddr;
 }  __attribute__((packed))  __attribute__((aligned(8)));
 
 /* Set Secure Config Parameter */
 struct uv_cb_ssc {
 	struct uv_cb_header header;
-	u64 reserved08[2];
-	u64 guest_handle;
-	u64 sec_header_origin;
-	u32 sec_header_len;
-	u32 reserved2c;
-	u64 reserved30[4];
+	uint64_t reserved08[2];
+	uint64_t guest_handle;
+	uint64_t sec_header_origin;
+	uint32_t sec_header_len;
+	uint32_t reserved2c;
+	uint64_t reserved30[4];
 } __attribute__((packed))  __attribute__((aligned(8)));
 
 static inline int uv_call_once(unsigned long r1, unsigned long r2)
@@ -211,7 +213,7 @@ static inline int uv_call(unsigned long r1, unsigned long r2)
 	return cc;
 }
 
-static inline int share(unsigned long addr, u16 cmd)
+static inline int share(unsigned long addr, uint16_t cmd)
 {
 	struct uv_cb_share uvcb = {
 		.header.cmd = cmd,
@@ -220,7 +222,7 @@ static inline int share(unsigned long addr, u16 cmd)
 	};
 	int cc;
 
-	cc = uv_call(0, (u64)&uvcb);
+	cc = uv_call(0, (uint64_t)&uvcb);
 	if (!cc && uvcb.header.rc == UVC_RC_EXECUTED)
 		return 0;
 
@@ -252,11 +254,11 @@ static inline int uv_remove_shared(unsigned long addr)
 
 struct uv_cb_cpu_set_state {
 	struct uv_cb_header header;
-	u64 reserved08[2];
-	u64 cpu_handle;
-	u8  reserved20[7];
-	u8  state;
-	u64 reserved28[5];
+	uint64_t reserved08[2];
+	uint64_t cpu_handle;
+	uint8_t  reserved20[7];
+	uint8_t  state;
+	uint64_t reserved28[5];
 };
 
 #define PV_CPU_STATE_OPR	1
