Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Martin Schwidefsky:
 "The first part of the s390 updates for 4.14:

   - Add machine type 0x3906 for IBM z14

   - Add IBM z14 TLB flushing improvements for KVM guests

   - Exploit the TOD clock epoch extension to provide a continuous TOD
     clock afer 2042/09/17

   - Add NIAI spinlock hints for IBM z14

   - Rework the vmcp driver and use CMA for the respone buffer of z/VM
     CP commands

   - Drop some s390 specific asm headers and use the generic version

   - Add block discard for DASD-FBA devices under z/VM

   - Add average request times to DASD statistics

   - A few of those constify patches which seem to be in vogue right now

   - Cleanup and bug fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (50 commits)
  s390/mm: avoid empty zero pages for KVM guests to avoid postcopy hangs
  s390/dasd: Add discard support for FBA devices
  s390/zcrypt: make CPRBX const
  s390/uaccess: avoid mvcos jump label
  s390/mm: use generic mm_hooks
  s390/facilities: fix typo
  s390/vmcp: simplify vmcp_response_free()
  s390/topology: Remove the unused parent_node() macro
  s390/dasd: Change unsigned long long to unsigned long
  s390/smp: convert cpuhp_setup_state() return code to zero on success
  s390: fix 'novx' early parameter handling
  s390/dasd: add average request times to dasd statistics
  s390/scm: use common completion path
  s390/pci: log changes to uid checking
  s390/vmcp: simplify vmcp_ioctl()
  s390/vmcp: return -ENOTTY for unknown ioctl commands
  s390/vmcp: split vmcp header file and move to uapi
  s390/vmcp: make use of contiguous memory allocator
  s390/cpcmd,vmcp: avoid GFP_DMA allocations
  s390/vmcp: fix uaccess check and avoid undefined behavior
  ...

61 files changed, 1020 insertions, 609 deletions

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 7eeb75d758c1..48af970320cb 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -222,6 +222,10 @@ config HAVE_MARCH_Z13_FEATURES
 	def_bool n
 	select HAVE_MARCH_ZEC12_FEATURES
 
+config HAVE_MARCH_Z14_FEATURES
+	def_bool n
+	select HAVE_MARCH_Z13_FEATURES
+
 choice
 	prompt "Processor type"
 	default MARCH_Z196
@@ -282,6 +286,14 @@ config MARCH_Z13
 	  2964 series). The kernel will be slightly faster but will not work on
 	  older machines.
 
+config MARCH_Z14
+	bool "IBM z14"
+	select HAVE_MARCH_Z14_FEATURES
+	help
+	  Select this to enable optimizations for IBM z14 (3906 series).
+	  The kernel will be slightly faster but will not work on older
+	  machines.
+
 endchoice
 
 config MARCH_Z900_TUNE
@@ -305,6 +317,9 @@ config MARCH_ZEC12_TUNE
 config MARCH_Z13_TUNE
 	def_bool TUNE_Z13 || MARCH_Z13 && TUNE_DEFAULT
 
+config MARCH_Z14_TUNE
+	def_bool TUNE_Z14 || MARCH_Z14 && TUNE_DEFAULT
+
 choice
 	prompt "Tune code generation"
 	default TUNE_DEFAULT
@@ -343,6 +358,9 @@ config TUNE_ZEC12
 config TUNE_Z13
 	bool "IBM z13"
 
+config TUNE_Z14
+	bool "IBM z14"
+
 endchoice
 
 config 64BIT
diff --git a/arch/s390/Makefile b/arch/s390/Makefile
index 54e00526b8df..dac821cfcd43 100644
--- a/arch/s390/Makefile
+++ b/arch/s390/Makefile
@@ -31,7 +31,8 @@ mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109
 mflags-$(CONFIG_MARCH_Z10)    := -march=z10
 mflags-$(CONFIG_MARCH_Z196)   := -march=z196
 mflags-$(CONFIG_MARCH_ZEC12)  := -march=zEC12
-mflags-$(CONFIG_MARCH_Z13)   := -march=z13
+mflags-$(CONFIG_MARCH_Z13)    := -march=z13
+mflags-$(CONFIG_MARCH_Z14)    := -march=z14
 
 export CC_FLAGS_MARCH := $(mflags-y)
 
@@ -44,7 +45,8 @@ cflags-$(CONFIG_MARCH_Z9_109_TUNE)	+= -mtune=z9-109
 cflags-$(CONFIG_MARCH_Z10_TUNE)		+= -mtune=z10
 cflags-$(CONFIG_MARCH_Z196_TUNE)	+= -mtune=z196
 cflags-$(CONFIG_MARCH_ZEC12_TUNE)	+= -mtune=zEC12
-cflags-$(CONFIG_MARCH_Z13_TUNE)	+= -mtune=z13
+cflags-$(CONFIG_MARCH_Z13_TUNE)		+= -mtune=z13
+cflags-$(CONFIG_MARCH_Z14_TUNE)		+= -mtune=z14
 
 cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include
 
diff --git a/arch/s390/include/asm/Kbuild b/arch/s390/include/asm/Kbuild
index b3c88479feba..6e2c9f7e47fa 100644
--- a/arch/s390/include/asm/Kbuild
+++ b/arch/s390/include/asm/Kbuild
@@ -16,4 +16,5 @@ generic-y += mcs_spinlock.h
 generic-y += mm-arch-hooks.h
 generic-y += preempt.h
 generic-y += trace_clock.h
+generic-y += unaligned.h
 generic-y += word-at-a-time.h
diff --git a/arch/s390/include/asm/cpcmd.h b/arch/s390/include/asm/cpcmd.h
index 3dfadb5d648f..ca2b0624ad46 100644
--- a/arch/s390/include/asm/cpcmd.h
+++ b/arch/s390/include/asm/cpcmd.h
@@ -10,9 +10,8 @@
 
 /*
  * the lowlevel function for cpcmd
- * the caller of __cpcmd has to ensure that the response buffer is below 2 GB
  */
-extern int __cpcmd(const char *cmd, char *response, int rlen, int *response_code);
+int __cpcmd(const char *cmd, char *response, int rlen, int *response_code);
 
 /*
  * cpcmd is the in-kernel interface for issuing CP commands
@@ -25,8 +24,8 @@ extern int __cpcmd(const char *cmd, char *response, int rlen, int *response_code
  * response_code: return pointer for VM's error code
  * return value: the size of the response. The caller can check if the buffer
  *		was large enough by comparing the return value and rlen
- * NOTE: If the response buffer is not below 2 GB, cpcmd can sleep
+ * NOTE: If the response buffer is not in real storage, cpcmd can sleep
  */
-extern int cpcmd(const char *cmd, char *response, int rlen, int *response_code);
+int cpcmd(const char *cmd, char *response, int rlen, int *response_code);
 
 #endif /* _ASM_S390_CPCMD_H */
diff --git a/arch/s390/include/asm/ebcdic.h b/arch/s390/include/asm/ebcdic.h
index c5befc5a3bf5..b71735eab23f 100644
--- a/arch/s390/include/asm/ebcdic.h
+++ b/arch/s390/include/asm/ebcdic.h
@@ -9,9 +9,7 @@
 #ifndef _EBCDIC_H
 #define _EBCDIC_H
 
-#ifndef _S390_TYPES_H
-#include <types.h>
-#endif
+#include <linux/types.h>
 
 extern __u8 _ascebc_500[256];   /* ASCII -> EBCDIC 500 conversion table */
 extern __u8 _ebcasc_500[256];   /* EBCDIC 500 -> ASCII conversion table */
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
index c92ed0170be2..65998a1f5d43 100644
--- a/arch/s390/include/asm/elf.h
+++ b/arch/s390/include/asm/elf.h
@@ -191,7 +191,7 @@ struct arch_elf_state {
 	} while (0)
 
 #define CORE_DUMP_USE_REGSET
-#define ELF_EXEC_PAGESIZE	4096
+#define ELF_EXEC_PAGESIZE	PAGE_SIZE
 
 /*
  * This is the base location for PIE (ET_DYN with INTERP) loads. On
diff --git a/arch/s390/include/asm/ipl.h b/arch/s390/include/asm/ipl.h
index edb5161df7e2..6810bd757312 100644
--- a/arch/s390/include/asm/ipl.h
+++ b/arch/s390/include/asm/ipl.h
@@ -81,7 +81,7 @@ struct ipl_parameter_block {
 		struct ipl_block_fcp fcp;
 		struct ipl_block_ccw ccw;
 	} ipl_info;
-} __attribute__((packed,aligned(4096)));
+} __packed __aligned(PAGE_SIZE);
 
 /*
  * IPL validity flags
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 8a5b082797f8..a6870ea6ea8b 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -95,46 +95,46 @@ struct lowcore {
 	__u64	int_clock;			/* 0x0310 */
 	__u64	mcck_clock;			/* 0x0318 */
 	__u64	clock_comparator;		/* 0x0320 */
+	__u64	boot_clock[2];			/* 0x0328 */
 
 	/* Current process. */
-	__u64	current_task;			/* 0x0328 */
-	__u8	pad_0x318[0x320-0x318];		/* 0x0330 */
-	__u64	kernel_stack;			/* 0x0338 */
+	__u64	current_task;			/* 0x0338 */
+	__u64	kernel_stack;			/* 0x0340 */
 
 	/* Interrupt, panic and restart stack. */
-	__u64	async_stack;			/* 0x0340 */
-	__u64	panic_stack;			/* 0x0348 */
-	__u64	restart_stack;			/* 0x0350 */
+	__u64	async_stack;			/* 0x0348 */
+	__u64	panic_stack;			/* 0x0350 */
+	__u64	restart_stack;			/* 0x0358 */
 
 	/* Restart function and parameter. */
-	__u64	restart_fn;			/* 0x0358 */
-	__u64	restart_data;			/* 0x0360 */
-	__u64	restart_source;			/* 0x0368 */
+	__u64	restart_fn;			/* 0x0360 */
+	__u64	restart_data;			/* 0x0368 */
+	__u64	restart_source;			/* 0x0370 */
 
 	/* Address space pointer. */
-	__u64	kernel_asce;			/* 0x0370 */
-	__u64	user_asce;			/* 0x0378 */
+	__u64	kernel_asce;			/* 0x0378 */
+	__u64	user_asce;			/* 0x0380 */
 
 	/*
 	 * The lpp and current_pid fields form a
 	 * 64-bit value that is set as program
 	 * parameter with the LPP instruction.
 	 */
-	__u32	lpp;				/* 0x0380 */
-	__u32	current_pid;			/* 0x0384 */
+	__u32	lpp;				/* 0x0388 */
+	__u32	current_pid;			/* 0x038c */
 
 	/* SMP info area */
-	__u32	cpu_nr;				/* 0x0388 */
-	__u32	softirq_pending;		/* 0x038c */
-	__u64	percpu_offset;			/* 0x0390 */
-	__u64	vdso_per_cpu_data;		/* 0x0398 */
-	__u64	machine_flags;			/* 0x03a0 */
-	__u32	preempt_count;			/* 0x03a8 */
-	__u8	pad_0x03ac[0x03b0-0x03ac];	/* 0x03ac */
-	__u64	gmap;				/* 0x03b0 */
-	__u32	spinlock_lockval;		/* 0x03b8 */
-	__u32	fpu_flags;			/* 0x03bc */
-	__u8	pad_0x03c0[0x0400-0x03c0];	/* 0x03c0 */
+	__u32	cpu_nr;				/* 0x0390 */
+	__u32	softirq_pending;		/* 0x0394 */
+	__u64	percpu_offset;			/* 0x0398 */
+	__u64	vdso_per_cpu_data;		/* 0x03a0 */
+	__u64	machine_flags;			/* 0x03a8 */
+	__u32	preempt_count;			/* 0x03b0 */
+	__u8	pad_0x03b4[0x03b8-0x03b4];	/* 0x03b4 */
+	__u64	gmap;				/* 0x03b8 */
+	__u32	spinlock_lockval;		/* 0x03c0 */
+	__u32	fpu_flags;			/* 0x03c4 */
+	__u8	pad_0x03c8[0x0400-0x03c8];	/* 0x03c8 */
 
 	/* Per cpu primary space access list */
 	__u32	paste[16];			/* 0x0400 */
diff --git a/arch/s390/include/asm/mman.h b/arch/s390/include/asm/mman.h
deleted file mode 100644
index b79813d9cf68..000000000000
--- a/arch/s390/include/asm/mman.h
+++ /dev/null
@@ -1,11 +0,0 @@
-/*
- *  S390 version
- *
- *  Derived from "include/asm-i386/mman.h"
- */
-#ifndef __S390_MMAN_H__
-#define __S390_MMAN_H__
-
-#include <uapi/asm/mman.h>
-
-#endif /* __S390_MMAN_H__ */
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
index 24bc41622a98..72e9ca83a668 100644
--- a/arch/s390/include/asm/mmu_context.h
+++ b/arch/s390/include/asm/mmu_context.h
@@ -12,6 +12,7 @@
 #include <linux/mm_types.h>
 #include <asm/tlbflush.h>
 #include <asm/ctl_reg.h>
+#include <asm-generic/mm_hooks.h>
 
 static inline int init_new_context(struct task_struct *tsk,
 				   struct mm_struct *mm)
@@ -33,7 +34,7 @@ static inline int init_new_context(struct task_struct *tsk,
 	mm->context.use_cmma = 0;
 #endif
 	switch (mm->context.asce_limit) {
-	case 1UL << 42:
+	case _REGION2_SIZE:
 		/*
 		 * forked 3-level task, fall through to set new asce with new
 		 * mm->pgd
@@ -49,12 +50,12 @@ static inline int init_new_context(struct task_struct *tsk,
 		mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
 			_ASCE_USER_BITS | _ASCE_TYPE_REGION1;
 		break;
-	case 1UL << 53:
+	case _REGION1_SIZE:
 		/* forked 4-level task, set new asce with new mm->pgd */
 		mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
 				   _ASCE_USER_BITS | _ASCE_TYPE_REGION2;
 		break;
-	case 1UL << 31:
+	case _REGION3_SIZE:
 		/* forked 2-level compat task, set new asce with new mm->pgd */
 		mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
 				   _ASCE_USER_BITS | _ASCE_TYPE_SEGMENT;
@@ -138,30 +139,4 @@ static inline void activate_mm(struct mm_struct *prev,
 	set_user_asce(next);
 }
 
-static inline void arch_dup_mmap(struct mm_struct *oldmm,
-				 struct mm_struct *mm)
-{
-}
-
-static inline void arch_exit_mmap(struct mm_struct *mm)
-{
-}
-
-static inline void arch_unmap(struct mm_struct *mm,
-			struct vm_area_struct *vma,
-			unsigned long start, unsigned long end)
-{
-}
-
-static inline void arch_bprm_mm_init(struct mm_struct *mm,
-				     struct vm_area_struct *vma)
-{
-}
-
-static inline bool arch_vma_access_permitted(struct vm_area_struct *vma,
-		bool write, bool execute, bool foreign)
-{
-	/* by default, allow everything */
-	return true;
-}
 #endif /* __S390_MMU_CONTEXT_H */
diff --git a/arch/s390/include/asm/nmi.h b/arch/s390/include/asm/nmi.h
index 9d91cf3e427f..c8e211b9a002 100644
--- a/arch/s390/include/asm/nmi.h
+++ b/arch/s390/include/asm/nmi.h
@@ -72,7 +72,7 @@ union mci {
 		u64 ar :  1; /* 33 access register validity */
 		u64 da :  1; /* 34 delayed access exception */
 		u64    :  1; /* 35 */
-		u64 gs :  1; /* 36 guarded storage registers */
+		u64 gs :  1; /* 36 guarded storage registers validity */
 		u64    :  5; /* 37-41 */
 		u64 pr :  1; /* 42 tod programmable register validity */
 		u64 fc :  1; /* 43 fp control register validity */
diff --git a/arch/s390/include/asm/page-states.h b/arch/s390/include/asm/page-states.h
index 42267a2fe29e..ca21b28a7b17 100644
--- a/arch/s390/include/asm/page-states.h
+++ b/arch/s390/include/asm/page-states.h
@@ -13,6 +13,7 @@
 #define ESSA_SET_POT_VOLATILE		4
 #define ESSA_SET_STABLE_RESIDENT	5
 #define ESSA_SET_STABLE_IF_RESIDENT	6
+#define ESSA_SET_STABLE_NODAT		7
 
 #define ESSA_MAX	ESSA_SET_STABLE_IF_RESIDENT
 
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index 624deaa44230..5d5c2b3500a4 100644
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -10,10 +10,14 @@
 #include <linux/const.h>
 #include <asm/types.h>
 
+#define _PAGE_SHIFT	12
+#define _PAGE_SIZE	(_AC(1, UL) << _PAGE_SHIFT)
+#define _PAGE_MASK	(~(_PAGE_SIZE - 1))
+
 /* PAGE_SHIFT determines the page size */
-#define PAGE_SHIFT      12
-#define PAGE_SIZE	(_AC(1,UL) << PAGE_SHIFT)
-#define PAGE_MASK       (~(PAGE_SIZE-1))
+#define PAGE_SHIFT	_PAGE_SHIFT
+#define PAGE_SIZE	_PAGE_SIZE
+#define PAGE_MASK	_PAGE_MASK
 #define PAGE_DEFAULT_ACC	0
 #define PAGE_DEFAULT_KEY	(PAGE_DEFAULT_ACC << 4)
 
@@ -133,6 +137,9 @@ static inline int page_reset_referenced(unsigned long addr)
 struct page;
 void arch_free_page(struct page *page, int order);
 void arch_alloc_page(struct page *page, int order);
+void arch_set_page_dat(struct page *page, int order);
+void arch_set_page_nodat(struct page *page, int order);
+int arch_test_page_nodat(struct page *page);
 void arch_set_page_states(int make_stable);
 
 static inline int devmem_is_allowed(unsigned long pfn)
@@ -145,16 +152,26 @@ static inline int devmem_is_allowed(unsigned long pfn)
 
 #endif /* !__ASSEMBLY__ */
 
-#define __PAGE_OFFSET           0x0UL
-#define PAGE_OFFSET             0x0UL
-#define __pa(x)                 (unsigned long)(x)
-#define __va(x)                 (void *)(unsigned long)(x)
-#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
-#define page_to_phys(page)	(page_to_pfn(page) << PAGE_SHIFT)
-#define virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
+#define __PAGE_OFFSET		0x0UL
+#define PAGE_OFFSET		0x0UL
+
+#define __pa(x)			((unsigned long)(x))
+#define __va(x)			((void *)(unsigned long)(x))
+
+#define virt_to_pfn(kaddr)	(__pa(kaddr) >> PAGE_SHIFT)
 #define pfn_to_virt(pfn)	__va((pfn) << PAGE_SHIFT)
+
+#define virt_to_page(kaddr)	pfn_to_page(virt_to_pfn(kaddr))
 #define page_to_virt(page)	pfn_to_virt(page_to_pfn(page))
 
+#define phys_to_pfn(kaddr)	((kaddr) >> PAGE_SHIFT)
+#define pfn_to_phys(pfn)	((pfn) << PAGE_SHIFT)
+
+#define phys_to_page(kaddr)	pfn_to_page(phys_to_pfn(kaddr))
+#define page_to_phys(page)	(page_to_pfn(page) << PAGE_SHIFT)
+
+#define virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
+
 #define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | \
 				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h
index bb0ff1bb0c4a..a0d9167519b1 100644
--- a/arch/s390/include/asm/pgalloc.h
+++ b/arch/s390/include/asm/pgalloc.h
@@ -15,6 +15,8 @@
 #include <linux/gfp.h>
 #include <linux/mm.h>
 
+#define CRST_ALLOC_ORDER 2
+
 unsigned long *crst_table_alloc(struct mm_struct *);
 void crst_table_free(struct mm_struct *, unsigned long *);
 
@@ -42,16 +44,16 @@ static inline void clear_table(unsigned long *s, unsigned long val, size_t n)
 
 static inline void crst_table_init(unsigned long *crst, unsigned long entry)
 {
-	clear_table(crst, entry, sizeof(unsigned long)*2048);
+	clear_table(crst, entry, _CRST_TABLE_SIZE);
 }
 
 static inline unsigned long pgd_entry_type(struct mm_struct *mm)
 {
-	if (mm->context.asce_limit <= (1UL << 31))
+	if (mm->context.asce_limit <= _REGION3_SIZE)
 		return _SEGMENT_ENTRY_EMPTY;
-	if (mm->context.asce_limit <= (1UL << 42))
+	if (mm->context.asce_limit <= _REGION2_SIZE)
 		return _REGION3_ENTRY_EMPTY;
-	if (mm->context.asce_limit <= (1UL << 53))
+	if (mm->context.asce_limit <= _REGION1_SIZE)
 		return _REGION2_ENTRY_EMPTY;
 	return _REGION1_ENTRY_EMPTY;
 }
@@ -119,7 +121,7 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
 
 	if (!table)
 		return NULL;
-	if (mm->context.asce_limit == (1UL << 31)) {
+	if (mm->context.asce_limit == _REGION3_SIZE) {
 		/* Forking a compat process with 2 page table levels */
 		if (!pgtable_pmd_page_ctor(virt_to_page(table))) {
 			crst_table_free(mm, table);
@@ -131,7 +133,7 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
 
 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
 {
-	if (mm->context.asce_limit == (1UL << 31))
+	if (mm->context.asce_limit == _REGION3_SIZE)
 		pgtable_pmd_page_dtor(virt_to_page(pgd));
 	crst_table_free(mm, (unsigned long *) pgd);
 }
@@ -158,4 +160,8 @@ static inline void pmd_populate(struct mm_struct *mm,
 
 extern void rcu_table_freelist_finish(void);
 
+void vmem_map_init(void);
+void *vmem_crst_alloc(unsigned long val);
+pte_t *vmem_pte_alloc(void);
+
 #endif /* _S390_PGALLOC_H */
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 57057fb1cc07..dce708e061ea 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -11,19 +11,6 @@
 #ifndef _ASM_S390_PGTABLE_H
 #define _ASM_S390_PGTABLE_H
 
-/*
- * The Linux memory management assumes a three-level page table setup.
- * For s390 64 bit we use up to four of the five levels the hardware
- * provides (region first tables are not used).
- *
- * The "pgd_xxx()" functions are trivial for a folded two-level
- * setup: the pgd is never bad, and a pmd always exists (as it's folded
- * into the pgd entry)
- *
- * This file contains the functions and defines necessary to modify and use
- * the S390 page table tree.
- */
-#ifndef __ASSEMBLY__
 #include <linux/sched.h>
 #include <linux/mm_types.h>
 #include <linux/page-flags.h>
@@ -34,9 +21,6 @@
 
 extern pgd_t swapper_pg_dir[];
 extern void paging_init(void);
-extern void vmem_map_init(void);
-pmd_t *vmem_pmd_alloc(void);
-pte_t *vmem_pte_alloc(void);
 
 enum {
 	PG_DIRECT_MAP_4K = 0,
@@ -77,38 +61,6 @@ extern unsigned long zero_page_mask;
 #define __HAVE_COLOR_ZERO_PAGE
 
 /* TODO: s390 cannot support io_remap_pfn_range... */
-#endif /* !__ASSEMBLY__ */
-
-/*
- * PMD_SHIFT determines the size of the area a second-level page
- * table can map
- * PGDIR_SHIFT determines what a third-level page table entry can map
- */
-#define PMD_SHIFT	20
-#define PUD_SHIFT	31
-#define P4D_SHIFT	42
-#define PGDIR_SHIFT	53
-
-#define PMD_SIZE        (1UL << PMD_SHIFT)
-#define PMD_MASK        (~(PMD_SIZE-1))
-#define PUD_SIZE	(1UL << PUD_SHIFT)
-#define PUD_MASK	(~(PUD_SIZE-1))
-#define P4D_SIZE	(1UL << P4D_SHIFT)
-#define P4D_MASK	(~(P4D_SIZE-1))
-#define PGDIR_SIZE	(1UL << PGDIR_SHIFT)
-#define PGDIR_MASK	(~(PGDIR_SIZE-1))
-
-/*
- * entries per page directory level: the S390 is two-level, so
- * we don't really have any PMD directory physically.
- * for S390 segment-table entries are combined to one PGD
- * that leads to 1024 pte per pgd
- */
-#define PTRS_PER_PTE	256
-#define PTRS_PER_PMD	2048
-#define PTRS_PER_PUD	2048
-#define PTRS_PER_P4D	2048
-#define PTRS_PER_PGD	2048
 
 #define FIRST_USER_ADDRESS  0UL
 
@@ -123,7 +75,6 @@ extern unsigned long zero_page_mask;
 #define pgd_ERROR(e) \
 	printk("%s:%d: bad pgd %p.\n", __FILE__, __LINE__, (void *) pgd_val(e))
 
-#ifndef __ASSEMBLY__
 /*
  * The vmalloc and module area will always be on the topmost area of the
  * kernel mapping. We reserve 128GB (64bit) for vmalloc and modules.
@@ -269,7 +220,7 @@ static inline int is_module_addr(void *