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

Pull s390 update from Martin Schwidefsky:
 "The most prominent change in this patch set is the software dirty bit
  patch for s390.  It removes __HAVE_ARCH_PAGE_TEST_AND_CLEAR_DIRTY and
  the page_test_and_clear_dirty primitive which makes the common memory
  management code a bit less obscure.

  Heiko fixed most of the PCI related fallout, more often than not
  missing GENERIC_HARDIRQS dependencies.  Notable is one of the 3270
  patches which adds an export to tty_io to be able to resize a tty.

  The rest is the usual bunch of cleanups and bug fixes."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (42 commits)
  s390/module: Add missing R_390_NONE relocation type
  drivers/gpio: add missing GENERIC_HARDIRQ dependency
  drivers/input: add couple of missing GENERIC_HARDIRQS dependencies
  s390/cleanup: rename SPP to LPP
  s390/mm: implement software dirty bits
  s390/mm: Fix crst upgrade of mmap with MAP_FIXED
  s390/linker skript: discard exit.data at runtime
  drivers/media: add missing GENERIC_HARDIRQS dependency
  s390/bpf,jit: add vlan tag support
  drivers/net,AT91RM9200: add missing GENERIC_HARDIRQS dependency
  iucv: fix kernel panic at reboot
  s390/Kconfig: sort list of arch selected config options
  phylib: remove !S390 dependeny from Kconfig
  uio: remove !S390 dependency from Kconfig
  dasd: fix sysfs cleanup in dasd_generic_remove
  s390/pci: fix hotplug module init
  s390/pci: cleanup clp page allocation
  s390/pci: cleanup clp inline assembly
  s390/perf: cpum_cf: fallback to software sampling events
  s390/mm: provide PAGE_SHARED define
  ...

82 files changed, 1216 insertions, 930 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index db061e961d37..73b7d50c9407 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6519,7 +6519,7 @@ S:	Supported
 F:	drivers/s390/net/
 
 S390 ZCRYPT DRIVER
-M:	Holger Dengler <hd@linux.vnet.ibm.com>
+M:	Ingo Tuchscherer <ingo.tuchscherer@de.ibm.com>
 M:	linux390@de.ibm.com
 L:	linux-s390@vger.kernel.org
 W:	http://www.ibm.com/developerworks/linux/linux390/
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 27c91c38d1a1..b220e152aefa 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -60,85 +60,86 @@ config PCI_QUIRKS
 
 config S390
 	def_bool y
-	select USE_GENERIC_SMP_HELPERS if SMP
-	select GENERIC_CPU_DEVICES if !SMP
-	select HAVE_SYSCALL_WRAPPERS
-	select HAVE_FUNCTION_TRACER
-	select HAVE_FUNCTION_TRACE_MCOUNT_TEST
-	select HAVE_FTRACE_MCOUNT_RECORD
-	select HAVE_C_RECORDMCOUNT
-	select HAVE_SYSCALL_TRACEPOINTS
-	select SYSCTL_EXCEPTION_TRACE
-	select HAVE_DYNAMIC_FTRACE
-	select HAVE_FUNCTION_GRAPH_TRACER
-	select HAVE_REGS_AND_STACK_ACCESS_API
-	select HAVE_OPROFILE
-	select HAVE_KPROBES
-	select HAVE_KRETPROBES
-	select HAVE_KVM if 64BIT
-	select HAVE_ARCH_TRACEHOOK
-	select INIT_ALL_POSSIBLE
-	select HAVE_PERF_EVENTS
-	select ARCH_HAVE_NMI_SAFE_CMPXCHG
-	select HAVE_DEBUG_KMEMLEAK
-	select HAVE_KERNEL_GZIP
-	select HAVE_KERNEL_BZIP2
-	select HAVE_KERNEL_LZMA
-	select HAVE_KERNEL_LZO
-	select HAVE_KERNEL_XZ
-	select HAVE_ARCH_MUTEX_CPU_RELAX
-	select HAVE_ARCH_JUMP_LABEL if !MARCH_G5
-	select HAVE_BPF_JIT if 64BIT && PACK_STACK
-	select ARCH_SAVE_PAGE_KEYS if HIBERNATION
-	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
-	select HAVE_MEMBLOCK
-	select HAVE_MEMBLOCK_NODE_MAP
-	select HAVE_CMPXCHG_LOCAL
-	select HAVE_CMPXCHG_DOUBLE
-	select HAVE_ALIGNED_STRUCT_PAGE if SLUB
-	select HAVE_VIRT_CPU_ACCOUNTING
-	select VIRT_CPU_ACCOUNTING
 	select ARCH_DISCARD_MEMBLOCK
-	select BUILDTIME_EXTABLE_SORT
-	select ARCH_INLINE_SPIN_TRYLOCK
-	select ARCH_INLINE_SPIN_TRYLOCK_BH
-	select ARCH_INLINE_SPIN_LOCK
-	select ARCH_INLINE_SPIN_LOCK_BH
-	select ARCH_INLINE_SPIN_LOCK_IRQ
-	select ARCH_INLINE_SPIN_LOCK_IRQSAVE
-	select ARCH_INLINE_SPIN_UNLOCK
-	select ARCH_INLINE_SPIN_UNLOCK_BH
-	select ARCH_INLINE_SPIN_UNLOCK_IRQ
-	select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
-	select ARCH_INLINE_READ_TRYLOCK
+	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
+	select ARCH_HAVE_NMI_SAFE_CMPXCHG
 	select ARCH_INLINE_READ_LOCK
 	select ARCH_INLINE_READ_LOCK_BH
 	select ARCH_INLINE_READ_LOCK_IRQ
 	select ARCH_INLINE_READ_LOCK_IRQSAVE
+	select ARCH_INLINE_READ_TRYLOCK
 	select ARCH_INLINE_READ_UNLOCK
 	select ARCH_INLINE_READ_UNLOCK_BH
 	select ARCH_INLINE_READ_UNLOCK_IRQ
 	select ARCH_INLINE_READ_UNLOCK_IRQRESTORE
-	select ARCH_INLINE_WRITE_TRYLOCK
+	select ARCH_INLINE_SPIN_LOCK
+	select ARCH_INLINE_SPIN_LOCK_BH
+	select ARCH_INLINE_SPIN_LOCK_IRQ
+	select ARCH_INLINE_SPIN_LOCK_IRQSAVE
+	select ARCH_INLINE_SPIN_TRYLOCK
+	select ARCH_INLINE_SPIN_TRYLOCK_BH
+	select ARCH_INLINE_SPIN_UNLOCK
+	select ARCH_INLINE_SPIN_UNLOCK_BH
+	select ARCH_INLINE_SPIN_UNLOCK_IRQ
+	select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE
 	select ARCH_INLINE_WRITE_LOCK
 	select ARCH_INLINE_WRITE_LOCK_BH
 	select ARCH_INLINE_WRITE_LOCK_IRQ
 	select ARCH_INLINE_WRITE_LOCK_IRQSAVE
+	select ARCH_INLINE_WRITE_TRYLOCK
 	select ARCH_INLINE_WRITE_UNLOCK
 	select ARCH_INLINE_WRITE_UNLOCK_BH
 	select ARCH_INLINE_WRITE_UNLOCK_IRQ
 	select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
-	select HAVE_UID16 if 32BIT
+	select ARCH_SAVE_PAGE_KEYS if HIBERNATION
 	select ARCH_WANT_IPC_PARSE_VERSION
-	select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT
+	select BUILDTIME_EXTABLE_SORT
+	select CLONE_BACKWARDS2
+	select GENERIC_CLOCKEVENTS
+	select GENERIC_CPU_DEVICES if !SMP
+	select GENERIC_KERNEL_THREAD
 	select GENERIC_SMP_IDLE_THREAD
 	select GENERIC_TIME_VSYSCALL_OLD
-	select GENERIC_CLOCKEVENTS
-	select KTIME_SCALAR if 32BIT
+	select HAVE_ALIGNED_STRUCT_PAGE if SLUB
+	select HAVE_ARCH_JUMP_LABEL if !MARCH_G5
+	select HAVE_ARCH_MUTEX_CPU_RELAX
 	select HAVE_ARCH_SECCOMP_FILTER
+	select HAVE_ARCH_TRACEHOOK
+	select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT
+	select HAVE_BPF_JIT if 64BIT && PACK_STACK
+	select HAVE_CMPXCHG_DOUBLE
+	select HAVE_CMPXCHG_LOCAL
+	select HAVE_C_RECORDMCOUNT
+	select HAVE_DEBUG_KMEMLEAK
+	select HAVE_DYNAMIC_FTRACE
+	select HAVE_FTRACE_MCOUNT_RECORD
+	select HAVE_FUNCTION_GRAPH_TRACER
+	select HAVE_FUNCTION_TRACER
+	select HAVE_FUNCTION_TRACE_MCOUNT_TEST
+	select HAVE_KERNEL_BZIP2
+	select HAVE_KERNEL_GZIP
+	select HAVE_KERNEL_LZMA
+	select HAVE_KERNEL_LZO
+	select HAVE_KERNEL_XZ
+	select HAVE_KPROBES
+	select HAVE_KRETPROBES
+	select HAVE_KVM if 64BIT
+	select HAVE_MEMBLOCK
+	select HAVE_MEMBLOCK_NODE_MAP
 	select HAVE_MOD_ARCH_SPECIFIC
+	select HAVE_OPROFILE
+	select HAVE_PERF_EVENTS
+	select HAVE_REGS_AND_STACK_ACCESS_API
+	select HAVE_SYSCALL_TRACEPOINTS
+	select HAVE_SYSCALL_WRAPPERS
+	select HAVE_UID16 if 32BIT
+	select HAVE_VIRT_CPU_ACCOUNTING
+	select INIT_ALL_POSSIBLE
+	select KTIME_SCALAR if 32BIT
 	select MODULES_USE_ELF_RELA
-	select CLONE_BACKWARDS2
+	select SYSCTL_EXCEPTION_TRACE
+	select USE_GENERIC_SMP_HELPERS if SMP
+	select VIRT_CPU_ACCOUNTING
 
 config SCHED_OMIT_FRAME_POINTER
 	def_bool y
diff --git a/arch/s390/appldata/appldata_mem.c b/arch/s390/appldata/appldata_mem.c
index 02d9a1cf5057..7ef60b52d6e0 100644
--- a/arch/s390/appldata/appldata_mem.c
+++ b/arch/s390/appldata/appldata_mem.c
@@ -108,7 +108,7 @@ static void appldata_get_mem_data(void *data)
 	mem_data->totalswap = P2K(val.totalswap);
 	mem_data->freeswap  = P2K(val.freeswap);
 
-	mem_data->timestamp = get_clock();
+	mem_data->timestamp = get_tod_clock();
 	mem_data->sync_count_2++;
 }
 
diff --git a/arch/s390/appldata/appldata_net_sum.c b/arch/s390/appldata/appldata_net_sum.c
index 1370e358d49a..2d224b945355 100644
--- a/arch/s390/appldata/appldata_net_sum.c
+++ b/arch/s390/appldata/appldata_net_sum.c
@@ -111,7 +111,7 @@ static void appldata_get_net_sum_data(void *data)
 	net_data->tx_dropped = tx_dropped;
 	net_data->collisions = collisions;
 
-	net_data->timestamp = get_clock();
+	net_data->timestamp = get_tod_clock();
 	net_data->sync_count_2++;
 }
 
diff --git a/arch/s390/appldata/appldata_os.c b/arch/s390/appldata/appldata_os.c
index 87521ba682e5..de8e2b3b0180 100644
--- a/arch/s390/appldata/appldata_os.c
+++ b/arch/s390/appldata/appldata_os.c
@@ -156,7 +156,7 @@ static void appldata_get_os_data(void *data)
 		}
 		ops.size = new_size;
 	}
-	os_data->timestamp = get_clock();
+	os_data->timestamp = get_tod_clock();
 	os_data->sync_count_2++;
 }
 
diff --git a/arch/s390/hypfs/hypfs_vm.c b/arch/s390/hypfs/hypfs_vm.c
index 4f6afaa8bd8f..f364dcf77e8e 100644
--- a/arch/s390/hypfs/hypfs_vm.c
+++ b/arch/s390/hypfs/hypfs_vm.c
@@ -245,7 +245,7 @@ static int dbfs_diag2fc_create(void **data, void **data_free_ptr, size_t *size)
 	d2fc = diag2fc_store(guest_query, &count, sizeof(d2fc->hdr));
 	if (IS_ERR(d2fc))
 		return PTR_ERR(d2fc);
-	get_clock_ext(d2fc->hdr.tod_ext);
+	get_tod_clock_ext(d2fc->hdr.tod_ext);
 	d2fc->hdr.len = count * sizeof(struct diag2fc_data);
 	d2fc->hdr.version = DBFS_D2FC_HDR_VERSION;
 	d2fc->hdr.count = count;
diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h
index 10a508802940..16760eeb79b0 100644
--- a/arch/s390/include/asm/barrier.h
+++ b/arch/s390/include/asm/barrier.h
@@ -13,15 +13,12 @@
  * to devices.
  */
 
-static inline void mb(void)
-{
 #ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
-	/* Fast-BCR without checkpoint synchronization */
-	asm volatile("bcr 14,0" : : : "memory");
+/* Fast-BCR without checkpoint synchronization */
+#define mb() do {  asm volatile("bcr 14,0" : : : "memory"); } while (0)
 #else
-	asm volatile("bcr 15,0" : : : "memory");
+#define mb() do {  asm volatile("bcr 15,0" : : : "memory"); } while (0)
 #endif
-}
 
 #define rmb()				mb()
 #define wmb()				mb()
diff --git a/arch/s390/include/asm/clp.h b/arch/s390/include/asm/clp.h
index 6c3aecc245ff..a0e71a501f7c 100644
--- a/arch/s390/include/asm/clp.h
+++ b/arch/s390/include/asm/clp.h
@@ -2,7 +2,7 @@
 #define _ASM_S390_CLP_H
 
 /* CLP common request & response block size */
-#define CLP_BLK_SIZE			(PAGE_SIZE * 2)
+#define CLP_BLK_SIZE			PAGE_SIZE
 
 struct clp_req_hdr {
 	u16 len;
diff --git a/arch/s390/include/asm/cpu_mf.h b/arch/s390/include/asm/cpu_mf.h
index 35f0020b7ba7..f1eddd150dd7 100644
--- a/arch/s390/include/asm/cpu_mf.h
+++ b/arch/s390/include/asm/cpu_mf.h
@@ -34,12 +34,12 @@
 /* CPU measurement facility support */
 static inline int cpum_cf_avail(void)
 {
-	return MACHINE_HAS_SPP && test_facility(67);
+	return MACHINE_HAS_LPP && test_facility(67);
 }
 
 static inline int cpum_sf_avail(void)
 {
-	return MACHINE_HAS_SPP && test_facility(68);
+	return MACHINE_HAS_LPP && test_facility(68);
 }
 
 
diff --git a/arch/s390/include/asm/dma-mapping.h b/arch/s390/include/asm/dma-mapping.h
index 8a32f7dfd3af..9411db653bac 100644
--- a/arch/s390/include/asm/dma-mapping.h
+++ b/arch/s390/include/asm/dma-mapping.h
@@ -19,9 +19,11 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 }
 
 extern int dma_set_mask(struct device *dev, u64 mask);
-extern int dma_is_consistent(struct device *dev, dma_addr_t dma_handle);
-extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
-			   enum dma_data_direction direction);
+
+static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
+				  enum dma_data_direction direction)
+{
+}
 
 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
diff --git a/arch/s390/include/asm/mman.h b/arch/s390/include/asm/mman.h
index 0e47a576d666..9977e08df5bd 100644
--- a/arch/s390/include/asm/mman.h
+++ b/arch/s390/include/asm/mman.h
@@ -9,7 +9,7 @@
 #include <uapi/asm/mman.h>
 
 #if !defined(__ASSEMBLY__) && defined(CONFIG_64BIT)
-int s390_mmap_check(unsigned long addr, unsigned long len);
-#define arch_mmap_check(addr,len,flags)	s390_mmap_check(addr,len)
+int s390_mmap_check(unsigned long addr, unsigned long len, unsigned long flags);
+#define arch_mmap_check(addr, len, flags) s390_mmap_check(addr, len, flags)
 #endif
 #endif /* __S390_MMAN_H__ */
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index a86ad4084073..75ce9b065f9f 100644
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -155,28 +155,6 @@ static inline int page_reset_referenced(unsigned long addr)
 #define _PAGE_ACC_BITS		0xf0	/* HW access control bits	*/
 
 /*
- * Test and clear dirty bit in storage key.
- * We can't clear the changed bit atomically. This is a potential
- * race against modification of the referenced bit. This function
- * should therefore only be called if it is not mapped in any
- * address space.
- *
- * Note that the bit gets set whenever page content is changed. That means
- * also when the page is modified by DMA or from inside the kernel.
- */
-#define __HAVE_ARCH_PAGE_TEST_AND_CLEAR_DIRTY
-static inline int page_test_and_clear_dirty(unsigned long pfn, int mapped)
-{
-	unsigned char skey;
-
-	skey = page_get_storage_key(pfn << PAGE_SHIFT);
-	if (!(skey & _PAGE_CHANGED))
-		return 0;
-	page_set_storage_key(pfn << PAGE_SHIFT, skey & ~_PAGE_CHANGED, mapped);
-	return 1;
-}
-
-/*
  * Test and clear referenced bit in storage key.
  */
 #define __HAVE_ARCH_PAGE_TEST_AND_CLEAR_YOUNG
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index b1fa93c606ad..05333b7f0469 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -160,9 +160,14 @@ void zpci_teardown_msi_irq(struct zpci_dev *, struct msi_desc *);
 int zpci_msihash_init(void);
 void zpci_msihash_exit(void);
 
+#ifdef CONFIG_PCI
 /* Error handling and recovery */
 void zpci_event_error(void *);
 void zpci_event_availability(void *);
+#else /* CONFIG_PCI */
+static inline void zpci_event_error(void *e) {}
+static inline void zpci_event_availability(void *e) {}
+#endif /* CONFIG_PCI */
 
 /* Helpers */
 struct zpci_dev *get_zdev(struct pci_dev *);
@@ -180,8 +185,10 @@ void zpci_dma_exit(void);
 /* Hotplug */
 extern struct mutex zpci_list_lock;
 extern struct list_head zpci_list;
-extern struct pci_hp_callback_ops hotplug_ops;
-extern unsigned int pci_probe;
+extern unsigned int s390_pci_probe;
+
+void zpci_register_hp_ops(struct pci_hp_callback_ops *);
+void zpci_deregister_hp_ops(void);
 
 /* FMB */
 int zpci_fmb_enable_device(struct zpci_dev *);
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 098adbb62660..97de1200c849 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -29,6 +29,7 @@
 #ifndef __ASSEMBLY__
 #include <linux/sched.h>
 #include <linux/mm_types.h>
+#include <linux/page-flags.h>
 #include <asm/bug.h>
 #include <asm/page.h>
 
@@ -221,13 +222,15 @@ extern unsigned long MODULES_END;
 /* Software bits in the page table entry */
 #define _PAGE_SWT	0x001		/* SW pte type bit t */
 #define _PAGE_SWX	0x002		/* SW pte type bit x */
-#define _PAGE_SWC	0x004		/* SW pte changed bit (for KVM) */
-#define _PAGE_SWR	0x008		/* SW pte referenced bit (for KVM) */
-#define _PAGE_SPECIAL	0x010		/* SW associated with special page */
+#define _PAGE_SWC	0x004		/* SW pte changed bit */
+#define _PAGE_SWR	0x008		/* SW pte referenced bit */
+#define _PAGE_SWW	0x010		/* SW pte write bit */
+#define _PAGE_SPECIAL	0x020		/* SW associated with special page */
 #define __HAVE_ARCH_PTE_SPECIAL
 
 /* Set of bits not changed in pte_modify */
-#define _PAGE_CHG_MASK	(PAGE_MASK | _PAGE_SPECIAL | _PAGE_SWC | _PAGE_SWR)
+#define _PAGE_CHG_MASK		(PAGE_MASK | _PAGE_SPECIAL | _PAGE_CO | \
+				 _PAGE_SWC | _PAGE_SWR)