[S390] cleanup lowcore.h

The lowcore.h header has quite a lot of whitespace damage and a rather
wild collection of entries. Remove all that whitespace and tidy up the
order of the lowcore fields.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2 files changed, 331 insertions, 323 deletions

diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 5b18035c1dc7..b349f1c7fdfa 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -11,125 +11,118 @@
 #ifndef _ASM_S390_LOWCORE_H
 #define _ASM_S390_LOWCORE_H
 
-#ifndef __s390x__
-#define __LC_EXT_OLD_PSW                0x018
-#define __LC_SVC_OLD_PSW                0x020
-#define __LC_PGM_OLD_PSW                0x028
-#define __LC_MCK_OLD_PSW                0x030
-#define __LC_IO_OLD_PSW                 0x038
-#define __LC_EXT_NEW_PSW                0x058
-#define __LC_SVC_NEW_PSW                0x060
-#define __LC_PGM_NEW_PSW                0x068
-#define __LC_MCK_NEW_PSW                0x070
-#define __LC_IO_NEW_PSW                 0x078
-#else /* !__s390x__ */
-#define __LC_EXT_OLD_PSW                0x0130
-#define __LC_SVC_OLD_PSW                0x0140
-#define __LC_PGM_OLD_PSW                0x0150
-#define __LC_MCK_OLD_PSW                0x0160
-#define __LC_IO_OLD_PSW                 0x0170
-#define __LC_EXT_NEW_PSW                0x01b0
-#define __LC_SVC_NEW_PSW                0x01c0
-#define __LC_PGM_NEW_PSW                0x01d0
-#define __LC_MCK_NEW_PSW                0x01e0
-#define __LC_IO_NEW_PSW                 0x01f0
-#endif /* !__s390x__ */
-
-#define __LC_IPL_PARMBLOCK_PTR		0x014
-#define __LC_EXT_PARAMS                 0x080
-#define __LC_CPU_ADDRESS                0x084
-#define __LC_EXT_INT_CODE               0x086
-
-#define __LC_SVC_ILC                    0x088
-#define __LC_SVC_INT_CODE               0x08A
-#define __LC_PGM_ILC                    0x08C
-#define __LC_PGM_INT_CODE               0x08E
+#define __LC_IPL_PARMBLOCK_PTR		0x0014
+#define __LC_EXT_PARAMS			0x0080
+#define __LC_CPU_ADDRESS		0x0084
+#define __LC_EXT_INT_CODE		0x0086
 
-#define __LC_PER_ATMID			0x096
-#define __LC_PER_ADDRESS		0x098
-#define __LC_PER_ACCESS_ID		0x0A1
-#define __LC_AR_MODE_ID			0x0A3
+#define __LC_SVC_ILC			0x0088
+#define __LC_SVC_INT_CODE		0x008a
+#define __LC_PGM_ILC			0x008c
+#define __LC_PGM_INT_CODE		0x008e
 
-#define __LC_SUBCHANNEL_ID              0x0B8
-#define __LC_SUBCHANNEL_NR              0x0BA
-#define __LC_IO_INT_PARM                0x0BC
-#define __LC_IO_INT_WORD                0x0C0
-#define __LC_MCCK_CODE                  0x0E8
+#define __LC_PER_ATMID			0x0096
+#define __LC_PER_ADDRESS		0x0098
+#define __LC_PER_ACCESS_ID		0x00a1
+#define __LC_AR_MODE_ID			0x00a3
 
-#define __LC_LAST_BREAK 		0x110
+#define __LC_SUBCHANNEL_ID		0x00b8
+#define __LC_SUBCHANNEL_NR		0x00ba
+#define __LC_IO_INT_PARM		0x00bc
+#define __LC_IO_INT_WORD		0x00c0
+#define __LC_MCCK_CODE			0x00e8
 
-#define __LC_RETURN_PSW                 0x200
-
-#define __LC_SAVE_AREA                  0xC00
+#define __LC_DUMP_REIPL			0x0e00
 
 #ifndef __s390x__
-#define __LC_IRB			0x208
-#define __LC_SYNC_ENTER_TIMER		0x248
-#define __LC_ASYNC_ENTER_TIMER		0x250
-#define __LC_EXIT_TIMER			0x258
-#define __LC_USER_TIMER			0x260
-#define __LC_SYSTEM_TIMER		0x268
-#define __LC_STEAL_TIMER		0x270
-#define __LC_LAST_UPDATE_TIMER		0x278
-#define __LC_LAST_UPDATE_CLOCK		0x280
-#define __LC_RETURN_MCCK_PSW            0x288
-#define __LC_KERNEL_STACK               0xC40
-#define __LC_THREAD_INFO		0xC44
-#define __LC_ASYNC_STACK                0xC48
-#define __LC_KERNEL_ASCE		0xC4C
-#define __LC_USER_ASCE			0xC50
-#define __LC_PANIC_STACK                0xC54
-#define __LC_CPUID                      0xC60
-#define __LC_CURRENT			0xC90
-#define __LC_INT_CLOCK			0xC98
+#define __LC_EXT_OLD_PSW		0x0018
+#define __LC_SVC_OLD_PSW		0x0020
+#define __LC_PGM_OLD_PSW		0x0028
+#define __LC_MCK_OLD_PSW		0x0030
+#define __LC_IO_OLD_PSW			0x0038
+#define __LC_EXT_NEW_PSW		0x0058
+#define __LC_SVC_NEW_PSW		0x0060
+#define __LC_PGM_NEW_PSW		0x0068
+#define __LC_MCK_NEW_PSW		0x0070
+#define __LC_IO_NEW_PSW			0x0078
+#define __LC_SAVE_AREA			0x0200
+#define __LC_RETURN_PSW			0x0240
+#define __LC_RETURN_MCCK_PSW		0x0248
+#define __LC_SYNC_ENTER_TIMER		0x0250
+#define __LC_ASYNC_ENTER_TIMER		0x0258
+#define __LC_EXIT_TIMER			0x0260
+#define __LC_USER_TIMER			0x0268
+#define __LC_SYSTEM_TIMER		0x0270
+#define __LC_STEAL_TIMER		0x0278
+#define __LC_LAST_UPDATE_TIMER		0x0280
+#define __LC_LAST_UPDATE_CLOCK		0x0288
+#define __LC_CURRENT			0x0290
+#define __LC_THREAD_INFO		0x0294
+#define __LC_KERNEL_STACK		0x0298
+#define __LC_ASYNC_STACK		0x029c
+#define __LC_PANIC_STACK		0x02a0
+#define __LC_KERNEL_ASCE		0x02a4
+#define __LC_USER_ASCE			0x02a8
+#define __LC_USER_EXEC_ASCE		0x02ac
+#define __LC_CPUID			0x02b0
+#define __LC_INT_CLOCK			0x02c8
+#define __LC_IRB			0x0300
+#define __LC_PFAULT_INTPARM		0x0080
+#define __LC_CPU_TIMER_SAVE_AREA	0x00d8
+#define __LC_CLOCK_COMP_SAVE_AREA	0x00e0
+#define __LC_PSW_SAVE_AREA		0x0100
+#define __LC_PREFIX_SAVE_AREA		0x0108
+#define __LC_AREGS_SAVE_AREA		0x0120
+#define __LC_FPREGS_SAVE_AREA		0x0160
+#define __LC_GPREGS_SAVE_AREA		0x0180
+#define __LC_CREGS_SAVE_AREA		0x01c0
 #else /* __s390x__ */
-#define __LC_IRB			0x210
-#define __LC_SYNC_ENTER_TIMER		0x250
-#define __LC_ASYNC_ENTER_TIMER		0x258
-#define __LC_EXIT_TIMER			0x260
-#define __LC_USER_TIMER			0x268
-#define __LC_SYSTEM_TIMER		0x270
-#define __LC_STEAL_TIMER		0x278
-#define __LC_LAST_UPDATE_TIMER		0x280
-#define __LC_LAST_UPDATE_CLOCK		0x288
-#define __LC_RETURN_MCCK_PSW            0x290
-#define __LC_KERNEL_STACK               0xD40
-#define __LC_THREAD_INFO		0xD48
-#define __LC_ASYNC_STACK                0xD50
-#define __LC_KERNEL_ASCE		0xD58
-#define __LC_USER_ASCE			0xD60
-#define __LC_PANIC_STACK                0xD68
-#define __LC_CPUID			0xD80
-#define __LC_CURRENT			0xDD8
-#define __LC_INT_CLOCK			0xDE8
-#define __LC_VDSO_PER_CPU		0xE38
-#endif /* __s390x__ */
-
-#define __LC_PASTE			0xE40
-
-#define __LC_DUMP_REIPL			0xE00
-#ifndef __s390x__
-#define __LC_PFAULT_INTPARM             0x080
-#define __LC_CPU_TIMER_SAVE_AREA        0x0D8
-#define __LC_CLOCK_COMP_SAVE_AREA	0x0E0
-#define __LC_PSW_SAVE_AREA		0x100
-#define __LC_PREFIX_SAVE_AREA		0x108
-#define __LC_AREGS_SAVE_AREA            0x120
-#define __LC_FPREGS_SAVE_AREA		0x160
-#define __LC_GPREGS_SAVE_AREA           0x180
-#define __LC_CREGS_SAVE_AREA            0x1C0
-#else /* __s390x__ */
-#define __LC_PFAULT_INTPARM             0x11B8
+#define __LC_LAST_BREAK			0x0110
+#define __LC_EXT_OLD_PSW		0x0130
+#define __LC_SVC_OLD_PSW		0x0140
+#define __LC_PGM_OLD_PSW		0x0150
+#define __LC_MCK_OLD_PSW		0x0160
+#define __LC_IO_OLD_PSW			0x0170
+#define __LC_EXT_NEW_PSW		0x01b0
+#define __LC_SVC_NEW_PSW		0x01c0
+#define __LC_PGM_NEW_PSW		0x01d0
+#define __LC_MCK_NEW_PSW		0x01e0
+#define __LC_IO_NEW_PSW			0x01f0
+#define __LC_SAVE_AREA			0x0200
+#define __LC_RETURN_PSW			0x0280
+#define __LC_RETURN_MCCK_PSW		0x0290
+#define __LC_SYNC_ENTER_TIMER		0x02a0
+#define __LC_ASYNC_ENTER_TIMER		0x02a8
+#define __LC_EXIT_TIMER			0x02b0
+#define __LC_USER_TIMER			0x02b8
+#define __LC_SYSTEM_TIMER		0x02c0
+#define __LC_STEAL_TIMER		0x02c8
+#define __LC_LAST_UPDATE_TIMER		0x02d0
+#define __LC_LAST_UPDATE_CLOCK		0x02d8
+#define __LC_CURRENT			0x02e0
+#define __LC_THREAD_INFO		0x02e8
+#define __LC_KERNEL_STACK		0x02f0
+#define __LC_ASYNC_STACK		0x02f8
+#define __LC_PANIC_STACK		0x0300
+#define __LC_KERNEL_ASCE		0x0308
+#define __LC_USER_ASCE			0x0310
+#define __LC_USER_EXEC_ASCE		0x0318
+#define __LC_CPUID			0x0320
+#define __LC_INT_CLOCK			0x0340
+#define __LC_VDSO_PER_CPU		0x0350
+#define __LC_IRB			0x0380
+#define __LC_PASTE			0x03c0
+#define __LC_PFAULT_INTPARM		0x11b8
 #define __LC_FPREGS_SAVE_AREA		0x1200
-#define __LC_GPREGS_SAVE_AREA           0x1280
+#define __LC_GPREGS_SAVE_AREA		0x1280
 #define __LC_PSW_SAVE_AREA		0x1300
 #define __LC_PREFIX_SAVE_AREA		0x1318
-#define __LC_FP_CREG_SAVE_AREA		0x131C
+#define __LC_FP_CREG_SAVE_AREA		0x131c
 #define __LC_TODREG_SAVE_AREA		0x1324
-#define __LC_CPU_TIMER_SAVE_AREA        0x1328
+#define __LC_CPU_TIMER_SAVE_AREA	0x1328
 #define __LC_CLOCK_COMP_SAVE_AREA	0x1331
-#define __LC_AREGS_SAVE_AREA            0x1340
-#define __LC_CREGS_SAVE_AREA            0x1380
+#define __LC_AREGS_SAVE_AREA		0x1340
+#define __LC_CREGS_SAVE_AREA		0x1380
 #endif /* __s390x__ */
 
 #ifndef __ASSEMBLY__
@@ -194,227 +187,240 @@ union save_area {
 struct _lowcore
 {
 #ifndef __s390x__
-        /* prefix area: defined by architecture */
-	psw_t        restart_psw;              /* 0x000 */
-	__u32        ccw2[4];                  /* 0x008 */
-	psw_t        external_old_psw;         /* 0x018 */
-	psw_t        svc_old_psw;              /* 0x020 */
-	psw_t        program_old_psw;          /* 0x028 */
-	psw_t        mcck_old_psw;             /* 0x030 */
-	psw_t        io_old_psw;               /* 0x038 */
-	__u8         pad1[0x58-0x40];          /* 0x040 */
-	psw_t        external_new_psw;         /* 0x058 */
-	psw_t        svc_new_psw;              /* 0x060 */
-	psw_t        program_new_psw;          /* 0x068 */
-	psw_t        mcck_new_psw;             /* 0x070 */
-	psw_t        io_new_psw;               /* 0x078 */
-	__u32        ext_params;               /* 0x080 */
-	__u16        cpu_addr;                 /* 0x084 */
-	__u16        ext_int_code;             /* 0x086 */
-        __u16        svc_ilc;                  /* 0x088 */
-        __u16        svc_code;                 /* 0x08a */
-        __u16        pgm_ilc;                  /* 0x08c */
-        __u16        pgm_code;                 /* 0x08e */
-	__u32        trans_exc_code;           /* 0x090 */
-	__u16        mon_class_num;            /* 0x094 */
-	__u16        per_perc_atmid;           /* 0x096 */
-	__u32        per_address;              /* 0x098 */
-	__u32        monitor_code;             /* 0x09c */
-	__u8         exc_access_id;            /* 0x0a0 */
-	__u8         per_access_id;            /* 0x0a1 */
-	__u8         pad2[0xB8-0xA2];          /* 0x0a2 */
-	__u16        subchannel_id;            /* 0x0b8 */
-	__u16        subchannel_nr;            /* 0x0ba */
-	__u32        io_int_parm;              /* 0x0bc */
-	__u32        io_int_word;              /* 0x0c0 */
-	__u8	     pad3[0xc8-0xc4];	       /* 0x0c4 */
-	__u32	     stfl_fac_list;	       /* 0x0c8 */
-	__u8	     pad4[0xd4-0xcc];	       /* 0x0cc */
-	__u32        extended_save_area_addr;  /* 0x0d4 */
-	__u32        cpu_timer_save_area[2];   /* 0x0d8 */
-	__u32        clock_comp_save_area[2];  /* 0x0e0 */
-	__u32        mcck_interruption_code[2]; /* 0x0e8 */
-	__u8	     pad5[0xf4-0xf0];	       /* 0x0f0 */
-	__u32        external_damage_code;     /* 0x0f4 */
-	__u32        failing_storage_address;  /* 0x0f8 */
-	__u8	     pad6[0x100-0xfc];	       /* 0x0fc */
-	__u32        st_status_fixed_logout[4];/* 0x100 */
-	__u8	     pad7[0x120-0x110];        /* 0x110 */
-	__u32        access_regs_save_area[16];/* 0x120 */
-	__u32        floating_pt_save_area[8]; /* 0x160 */
-	__u32        gpregs_save_area[16];     /* 0x180 */
-	__u32        cregs_save_area[16];      /* 0x1c0 */	
-
-        psw_t        return_psw;               /* 0x200 */
-	__u8	     irb[64];		       /* 0x208 */
-	__u64        sync_enter_timer;         /* 0x248 */
-	__u64        async_enter_timer;        /* 0x250 */
-	__u64        exit_timer;               /* 0x258 */
-	__u64	     user_timer;	       /* 0x260 */
-	__u64	     system_timer;	       /* 0x268 */
-	__u64	     steal_timer;	       /* 0x270 */
-	__u64	     last_update_timer;        /* 0x278 */
-	__u64	     last_update_clock;        /* 0x280 */
-        psw_t        return_mcck_psw;          /* 0x288 */
-	__u8         pad8[0xc00-0x290];        /* 0x290 */
-
-        /* System info area */
-	__u32        save_area[16];            /* 0xc00 */
-	__u32        kernel_stack;             /* 0xc40 */
-	__u32        thread_info;              /* 0xc44 */
-	__u32        async_stack;              /* 0xc48 */
-	__u32        kernel_asce;              /* 0xc4c */
-	__u32        user_asce;                /* 0xc50 */
-	__u32        panic_stack;              /* 0xc54 */
-	__u32	     user_exec_asce;	       /* 0xc58 */
-	__u8	     pad10[0xc60-0xc5c];       /* 0xc5c */
-	/* entry.S sensitive area start */
-	cpuid_t      cpu_id;		       /* 0xc60 */
-	__u32	     cpu_nr;		       /* 0xc68 */
-	__u8	     pad_0xc6c[0xc80-0xc6c];   /* 0xc6c */
-	/* entry.S sensitive area end */
-
-        /* SMP info area: defined by DJB */
-	__u64	     clock_comparator;	       /* 0xc80 */
-	__u32        ext_call_fast;            /* 0xc88 */
-	__u32        percpu_offset;            /* 0xc8c */
-	__u32        current_task;	       /* 0xc90 */
-	__u32        softirq_pending;	       /* 0xc94 */
-	__u64        int_clock;                /* 0xc98 */
-        __u8         pad11[0xe00-0xca0];       /* 0xca0 */
-
-	/* 0xe00 contains the address of the IPL Parameter */
-	/* Information block. Dump tools need IPIB for IPL */
-	/* after dump.					   */
-	__u32	     ipib;		       /* 0xe00 */
-	__u32	     ipib_checksum;	       /* 0xe04 */
-
-        /* Align to the top 1k of prefix area */
-	__u8	     pad12[0x1000-0xe08];      /* 0xe08 */
+	/* 0x0000 - 0x01ff: defined by architecture */
+	psw_t	restart_psw;			/* 0x0000 */
+	__u32	ccw2[4];			/* 0x0008 */
+	psw_t	external_old_psw;		/* 0x0018 */
+	psw_t	svc_old_psw;			/* 0x0020 */
+	psw_t	program_old_psw;		/* 0x0028 */
+	psw_t	mcck_old_psw;			/* 0x0030 */
+	psw_t	io_old_psw;			/* 0x0038 */
+	__u8	pad_0x0040[0x0058-0x0040];	/* 0x0040 */
+	psw_t	external_new_psw;		/* 0x0058 */
+	psw_t	svc_new_psw;			/* 0x0060 */
+	psw_t	program_new_psw;		/* 0x0068 */
+	psw_t	mcck_new_psw;			/* 0x0070 */
+	psw_t	io_new_psw;			/* 0x0078 */
+	__u32	ext_params;			/* 0x0080 */
+	__u16	cpu_addr;			/* 0x0084 */
+	__u16	ext_int_code;			/* 0x0086 */
+	__u16	svc_ilc;			/* 0x0088 */
+	__u16	svc_code;			/* 0x008a */
+	__u16	pgm_ilc;			/* 0x008c */
+	__u16	pgm_code;			/* 0x008e */
+	__u32	trans_exc_code;			/* 0x0090 */
+	__u16	mon_class_num;			/* 0x0094 */
+	__u16	per_perc_atmid;			/* 0x0096 */
+	__u32	per_address;			/* 0x0098 */
+	__u32	monitor_code;			/* 0x009c */
+	__u8	exc_access_id;			/* 0x00a0 */
+	__u8	per_access_id;			/* 0x00a1 */
+	__u8	pad_0x00a2[0x00b8-0x00a2];	/* 0x00a2 */
+	__u16	subchannel_id;			/* 0x00b8 */
+	__u16	subchannel_nr;			/* 0x00ba */
+	__u32	io_int_parm;			/* 0x00bc */
+	__u32	io_int_word;			/* 0x00c0 */
+	__u8	pad_0x00c4[0x00c8-0x00c4];	/* 0x00c4 */
+	__u32	stfl_fac_list;			/* 0x00c8 */
+	__u8	pad_0x00cc[0x00d4-0x00cc];	/* 0x00cc */
+	__u32	extended_save_area_addr;	/* 0x00d4 */
+	__u32	cpu_timer_save_area[2];		/* 0x00d8 */
+	__u32	clock_comp_save_area[2];	/* 0x00e0 */
+	__u32	mcck_interruption_code[2];	/* 0x00e8 */
+	__u8	pad_0x00f0[0x00f4-0x00f0];	/* 0x00f0 */
+	__u32	external_damage_code;		/* 0x00f4 */
+	__u32	failing_storage_address;	/* 0x00f8 */
+	__u8	pad_0x00fc[0x0100-0x00fc];	/* 0x00fc */
+	__u32	st_status_fixed_logout[4];	/* 0x0100 */
+	__u8	pad_0x0110[0x0120-0x0110];	/* 0x0110 */
+
+	/* CPU register save area: defined by architecture */
+	__u32	access_regs_save_area[16];	/* 0x0120 */
+	__u32	floating_pt_save_area[8];	/* 0x0160 */
+	__u32	gpregs_save_area[16];		/* 0x0180 */
+	__u32	cregs_save_area[16];		/* 0x01c0 */
+
+	/* Return psws. */
+	__u32	save_area[16];			/* 0x0200 */
+	psw_t	return_psw;			/* 0x0240 */
+	psw_t	return_mcck_psw;		/* 0x0248 */
+
+	/* CPU time accounting values */
+	__u64	sync_enter_timer;		/* 0x0250 */
+	__u64	async_enter_timer;		/* 0x0258 */
+	__u64	exit_timer;			/* 0x0260 */
+	__u64	user_timer;			/* 0x0268 */
+	__u64	system_timer;			/* 0x0270 */
+	__u64	steal_timer;			/* 0x0278 */
+	__u64	last_update_timer;		/* 0x0280 */
+	__u64	last_update_clock;		/* 0x0288 */
+
+	/* Current process. */
+	__u32	current_task;			/* 0x0290 */
+	__u32	thread_info;			/* 0x0294 */
+	__u32	kernel_stack;			/* 0x0298 */
+
+	/* Interrupt and panic stack. */
+	__u32	async_stack;			/* 0x029c */
+	__u32	panic_stack;			/* 0x02a0 */
+
+	/* Address space pointer. */
+	__u32	kernel_asce;			/* 0x02a4 */
+	__u32	user_asce;			/* 0x02a8 */
+	__u32	user_exec_asce;			/* 0x02ac */
+
+	/* SMP info area */
+	cpuid_t	cpu_id;				/* 0x02b0 */
+	__u32	cpu_nr;				/* 0x02b8 */
+	__u32	softirq_pending;		/* 0x02bc */
+	__u32	percpu_offset;			/* 0x02c0 */
+	__u32	ext_call_fast;			/* 0x02c4 */
+	__u64	int_clock;			/* 0x02c8 */
+	__u64	clock_comparator;		/* 0x02d0 */
+	__u8	pad_0x02d8[0x0300-0x02d8];	/* 0x02d8 */
+
+	/* Interrupt response block */
+	__u8	irb[64];			/* 0x0300 */
+
+	__u8	pad_0x0400[0x0e00-0x0400];	/* 0x0400 */
+
+	/*
+	 * 0xe00 contains the address of the IPL Parameter Information
+	 * block. Dump tools need IPIB for IPL after dump.
+	 * Note: do not change the position of any fields in 0x0e00-0x0f00
+	 */
+	__u32	ipib;				/* 0x0e00 */
+	__u32	ipib_checksum;			/* 0x0e04 */
+
+	/* Align to the top 1k of prefix area */
+	__u8	pad_0x0e08[0x1000-0x0e08];	/* 0x0e08 */
 #else /* !__s390x__ */
-        /* prefix area: defined by architecture */
-	__u32        ccw1[2];                  /* 0x000 */
-	__u32        ccw2[4];                  /* 0x008 */
-	__u8         pad1[0x80-0x18];          /* 0x018 */
-	__u32        ext_params;               /* 0x080 */
-	__u16        cpu_addr;                 /* 0x084 */
-	__u16        ext_int_code;             /* 0x086 */
-        __u16        svc_ilc;                  /* 0x088 */
-        __u16        svc_code;                 /* 0x08a */
-        __u16        pgm_ilc;                  /* 0x08c */
-        __u16        pgm_code;                 /* 0x08e */
-	__u32        data_exc_code;            /* 0x090 */
-	__u16        mon_class_num;            /* 0x094 */
-	__u16        per_perc_atmid;           /* 0x096 */
-	addr_t       per_address;              /* 0x098 */
-	__u8         exc_access_id;            /* 0x0a0 */
-	__u8         per_access_id;            /* 0x0a1 */
-	__u8         op_access_id;             /* 0x0a2 */
-	__u8         ar_access_id;             /* 0x0a3 */
-	__u8         pad2[0xA8-0xA4];          /* 0x0a4 */
-	addr_t	     trans_exc_code;	       /* 0x0a8 */
-	addr_t	     monitor_code;	       /* 0x0b0 */
-	__u16        subchannel_id;            /* 0x0b8 */
-	__u16        subchannel_nr;            /* 0x0ba */
-	__u32        io_int_parm;              /* 0x0bc */
-	__u32        io_int_word;              /* 0x0c0 */
-	__u8         pad3[0xc8-0xc4];          /* 0x0c4 */
-	__u32        stfl_fac_list;            /* 0x0c8 */
-	__u8         pad4[0xe8-0xcc];          /* 0x0cc */
-	__u32        mcck_interruption_code[2]; /* 0x0e8 */
-	__u8         pad5[0xf4-0xf0];          /* 0x0f0 */
-	__u32        external_damage_code;     /* 0x0f4 */
-	addr_t       failing_storage_address;  /* 0x0f8 */
-	__u8         pad6[0x120-0x100];        /* 0x100 */
-	psw_t        restart_old_psw;          /* 0x120 */
-	psw_t        external_old_psw;         /* 0x130 */
-	psw_t        svc_old_psw;              /* 0x140 */
-	psw_t        program_old_psw;          /* 0x150 */
-	psw_t        mcck_old_psw;             /* 0x160 */
-	psw_t        io_old_psw;               /* 0x170 */
-	__u8         pad7[0x1a0-0x180];        /* 0x180 */
-	psw_t        restart_psw;              /* 0x1a0 */
-	psw_t        external_new_psw;         /* 0x1b0 */
-	psw_t        svc_new_psw;              /* 0x1c0 */
-	psw_t        program_new_psw;          /* 0x1d0 */
-	psw_t        mcck_new_psw;             /* 0x1e0 */
-	psw_t        io_new_psw;               /* 0x1f0 */
-        psw_t        return_psw;               /* 0x200 */
-	__u8	     irb[64];		       /* 0x210 */
-	__u64        sync_enter_timer;         /* 0x250 */
-	__u64        async_enter_timer;        /* 0x258 */
-	__u64        exit_timer;               /* 0x260 */
-	__u64	     user_timer;	       /* 0x268 */
-	__u64	     system_timer;	       /* 0x270 */
-	__u64	     steal_timer;	       /* 0x278 */
-	__u64	     last_update_timer;        /* 0x280 */
-	__u64	     last_update_clock;        /* 0x288 */
-        psw_t        return_mcck_psw;          /* 0x290 */
-        __u8         pad8[0xc00-0x2a0];        /* 0x2a0 */
-        /* System info area */
-	__u64        save_area[16];            /* 0xc00 */
-        __u8         pad9[0xd40-0xc80];        /* 0xc80 */
- 	__u64        kernel_stack;             /* 0xd40 */
-	__u64        thread_info;              /* 0xd48 */
-	__u64        async_stack;              /* 0xd50 */
-	__u64        kernel_asce;              /* 0xd58 */
-	__u64        user_asce;                /* 0xd60 */
-	__u64        panic_stack;              /* 0xd68 */
-	__u64	     user_exec_asce;	       /* 0xd70 */
-	__u8	     pad10[0xd80-0xd78];       /* 0xd78 */
-	/* entry.S sensitive area start */
-	cpuid_t      cpu_id;		       /* 0xd80 */
-	__u32	     cpu_nr;		       /* 0xd88 */
-	__u8	     pad_0xd8c[0xdc0-0xd8c];   /* 0xd8c */
-	/* entry.S sensitive area end */
-
-        /* SMP info area: defined by DJB */
-	__u64	     clock_comparator;	       /* 0xdc0 */
-	__u64        ext_call_fast;            /* 0xdc8 */
-	__u64        percpu_offset;            /* 0xdd0 */
-	__u64        current_task;	       /* 0xdd8 */
-	__u32	     softirq_pending;	       /* 0xde0 */
-	__u32	     pad_0x0de4;	       /* 0xde4 */
-	__u64        int_clock;                /* 0xde8 */
-        __u8         pad12[0xe00-0xdf0];       /* 0xdf0 */
-
-	/* 0xe00 contains the address of the IPL Parameter */
-	/* Information block. Dump tools need IPIB for IPL */
-	/* after dump.					   */
-	__u64	     ipib;		       /* 0xe00 */
-	__u32	     ipib_checksum;	       /* 0xe08 */
+	/* 0x0000 - 0x01ff: defined by architecture */
+	__u32	ccw1[2];			/* 0x0000 */
+	__u32	ccw2[4];			/* 0x0008 */
+	__u8	pad_0x0018[0x0080-0x0018];	/* 0x0018 */
+	__u32	ext_params;			/* 0x0080 */
+	__u16	cpu_addr;			/* 0x0084 */
+	__u16	ext_int_code;			/* 0x0086 */
+	__u16	svc_ilc;			/* 0x0088 */
+	__u16	svc_code;			/* 0x008a */
+	__u16	pgm_ilc;			/* 0x008c */
+	__u16	pgm_code;			/* 0x008e */
+	__u32	data_exc_code;			/* 0x0090 */
+	__u16	mon_class_num;			/* 0x0094 */
+	__u16	per_perc_atmid;			/* 0x0096 */
+	addr_t	per_address;			/* 0x0098 */
+	__u8	exc_access_id;			/* 0x00a0 */
+	__u8	per_access_id;			/* 0x00a1 */
+	__u8	op_access_id;			/* 0x00a2 */
+	__u8	ar_access_id;			/* 0x00a3 */
+	__u8	pad_0x00a4[0x00a8-0x00a4];	/* 0x00a4 */
+	addr_t	trans_exc_code;			/* 0x00a8 */
+	addr_t	monitor_code;			/* 0x00b0 */
+	__u16	subchannel_id;			/* 0x00b8 */
+	__u16	subchannel_nr;			/* 0x00ba */
+	__u32	io_int_parm;			/* 0x00bc */
+	__u32	io_int_word;			/* 0x00c0 */
+	__u8	pad_0x00c4[0x00c8-0x00c4];	/* 0x00c4 */
+	__u32	stfl_fac_list;			/* 0x00c8 */
+	__u8	pad_0x00cc[0x00e8-0x00cc];	/* 0x00cc */
+	__u32	mcck_interruption_code[2];	/* 0x00e8 */
+	__u8	pad_0x00f0[0x00f4-0x00f0];	/* 0x00f0 */
+	__u32	external_damage_code;		/* 0x00f4 */
+	addr_t	failing_storage_address;	/* 0x00f8 */
+	__u8	pad_0x0100[0x0120-0x0100];	/* 0x0100 */
+	psw_t	restart_old_psw;		/* 0x0120 */
+	psw_t	external_old_psw;		/* 0x0130 */
+	psw_t	svc_old_psw;			/* 0x0140 */
+	psw_t	program_old_psw;		/* 0x0150 */
+	psw_t	mcck_old_psw;			/* 0x0160 */
+	psw_t	io_old_psw;			/* 0x0170 */
+	__u8	pad_0x0180[0x01a0-0x0180];	/* 0x0180 */
+	psw_t	restart_psw;			/* 0x01a0 */
+	psw_t	external_new_psw;		/* 0x01b0 */
+	psw_t	svc_new_psw;			/* 0x01c0 */
+	psw_t	program_new_psw;		/* 0x01d0 */
+	psw_t	mcck_new_psw;			/* 0x01e0 */
+	psw_t	io_new_psw;			/* 0x01f0 */
+
+	/* Entry/exit save area & return psws. */
+	__u64	save_area[16];			/* 0x0200 */
+	psw_t	return_psw;			/* 0x0280 */
+	psw_t	return_mcck_psw;		/* 0x0290 */
+
+	/* CPU accounting and timing values. */
+	__u64	sync_enter_timer;		/* 0x02a0 */
+	__u64	async_enter_timer;		/* 0x02a8 */
+	__u64	exit_timer;			/* 0x02b0 */
+	__u64	user_timer;			/* 0x02b8 */
+	__u64	system_timer;			/* 0x02c0 */
+	__u64	steal_timer;			/* 0x02c8 */
+	__u64	last_update_timer;		/* 0x02d0 */
+	__u64	last_update_clock;		/* 0x02d8 */
+
+	/* Current process. */
+	__u64	current_task;			/* 0x02e0 */
+	__u64	thread_info;			/* 0x02e8 */
+	__u64	kernel_stack;			/* 0x02f0 */
+
+	/* Interrupt and panic stack. */
+	__u64	async_stack;			/* 0x02f8 */
+	__u64	panic_stack;			/* 0x0300 */
+
+	/* Address space pointer. */
+	__u64	kernel_asce;			/* 0x0308 */
+	__u64	user_asce;			/* 0x0310 */
+	__u64	user_exec_asce;			/* 0x0318 */
+
+	/* SMP info area */
+	cpuid_t	cpu_id;				/* 0x0320 */
+	__u32	cpu_nr;				/* 0x0328 */
+	__u32	softirq_pending;		/* 0x032c */
+	__u64	percpu_offset;			/* 0x0330 */
+	__u64	ext_call_fast;			/* 0x0338 */
+	__u64	int_clock;			/* 0x0340 */
+	__u64	clock_comparator;		/* 0x0348 */
+	__u64	vdso_per_cpu_data;		/* 0x0350 */
+	__u8	pad_0x0358[0x0380-0x0358];	/* 0x0358 */
+
+	/* Interrupt response block. */
+	__u8	irb[64];			/* 0x0380 */
 
 	/* Per cpu primary space access list */
-	__u8	     pad_0xe0c[0xe38-0xe0c];   /* 0xe0c */
-	__u64	     vdso_per_cpu_data;	       /* 0xe38 */
-	__u32	     paste[16];		       /* 0xe40 */
-
-	__u8	     pad13[0x11b8-0xe80];      /* 0xe80 */
-
-	/* 64 bit extparam used for pfault, diag 250 etc  */
-	__u64        ext_params2;               /* 0x11B8 */
-
-	__u8         pad14[0x1200-0x11C0];      /* 0x11C0 */
-
-        /* System info area */ 
-
-	__u64        floating_pt_save_area[16]; /* 0x1200 */
-	__u64        gpregs_save_area[16];      /* 0x1280 */
-	__u32        st_status_fixed_logout[4]; /* 0x1300 */
-	__u8         pad15[0x1318-0x1310];      /* 0x1310 */
-	__u32        prefixreg_save_area;       /* 0x1318 */
-	__u32        fpt_creg_save_area;        /* 0x131c */
-	__u8         pad16[0x1324-0x1320];      /* 0x1320 */
-	__u32        tod_progreg_save_area;     /* 0x1324 */
-	__u32        cpu_timer_save_area[2];    /* 0x1328 */
-	__u32        clock_comp_save_area[2];   /* 0x1330 */
-	__u8         pad17[0x1340-0x1338];      /* 0x1338 */
-	__u32        access_regs_save_area[16]; /* 0x1340 */ 
-	__u64        cregs_save_area[16];       /* 0x1380 */
+	__u32	paste[16];			/* 0x03c0 */
+
+	__u8	pad_0x0400[0x0e00-0x0400];	/* 0x0400 */
+
+	/*
+	 * 0xe00 contains the address of the IPL Parameter Information
+	 * block. Dump tools need IPIB for IPL after dump.
+	 * Note: do not change the position of any fields in 0x0e00-0x0f00
+	 */
+	__u64	ipib;				/* 0x0e00 */
+	__u32	ipib_checksum;			/* 0x0e08 */
+	__u8	pad_0x0e0c[0x11b8-0x0e0c];	/* 0x0e0c */
+
+	/* 64 bit extparam used for pfault/diag 250: defined by architecture */
+	__u64	ext_params2;			/* 0x11B8 */
+	__u8	pad_0x11c0[0x1200-0x11C0];	/* 0x11C0 */
+
+	/* CPU register save area: defined by architecture */
+	__u64	floating_pt_save_area[16];	/* 0x1200 */
+	__u64	gpregs_save_area[16];		/* 0x1280 */
+	__u32	st_status_fixed_logout[4];	/* 0x1300 */
+	__u8	pad_0x1310[0x1318-0x1310];	/* 0x1310 */
+	__u32	prefixreg_save_area;		/* 0x1318 */
+	__u32	fpt_creg_save_area;		/* 0x131c */
+	__u8	pad_0x1320[0x1324-0x1320];	/* 0x1320 */
+	__u32	tod_progreg_save_area;		/* 0x1324 */
+	__u32	cpu_timer_save_area[2];		/* 0x1328 */
+	__u32	clock_comp_save_area[2];	/* 0x1330 */
+	__u8	pad_0x1338[0x1340-0x1338];	/* 0x1338 */
+	__u32	access_regs_save_area[16];	/* 0x1340 */
+	__u64	cregs_save_area[16];		/* 0x1380 */
 
 	/* align to the top of the prefix area */
-
-	__u8         pad18[0x2000-0x1400];      /* 0x1400 */
+	__u8	pad_0x1400[0x2000-0x1400];	/* 0x1400 */
 #endif /* !__s390x__ */
 } __attribute__((packed)); /* End structure*/
 
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index ec7e35f6055b..1046c2c9f8d1 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -469,6 +469,8 @@ start:
 	.org	0x10000
 startup:basr	%r13,0			# get base
 .LPG0:
+	xc	0x200(256),0x200	# partially clear lowcore
+	xc	0x300(256),0x300
 
 #ifndef CONFIG_MARCH_G5
 	# check processor version against MARCH_{G5,Z900,Z990,Z9_109,Z10}