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

Pull s390 updates from Martin Schwidefsky:
 "Among the traditional bug fixes and cleanups are some improvements:

   - A tool to generated the facility lists, generating the bit fields
     by hand has been a source of bugs in the past

   - The spinlock loop is reordered to avoid bursts of hypervisor calls

   - Add support for the open-for-business interface to the service
     element

   - The get_cpu call is added to the vdso

   - A set of tracepoints is defined for the common I/O layer

   - The deprecated sclp_cpi module is removed

   - Update default configuration"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (56 commits)
  s390/sclp: fix possible control register corruption
  s390: fix normalization bug in exception table sorting
  s390/configs: update default configurations
  s390/vdso: optimize getcpu system call
  s390: drop smp_mb in vdso_init
  s390: rename struct _lowcore to struct lowcore
  s390/mem_detect: use unsigned longs
  s390/ptrace: get rid of long longs in psw_bits
  s390/sysinfo: add missing SYSIB 1.2.2 multithreading fields
  s390: get rid of CONFIG_SCHED_MC and CONFIG_SCHED_BOOK
  s390/Kconfig: remove pointless 64 bit dependencies
  s390/dasd: fix failfast for disconnected devices
  s390/con3270: testing return kzalloc retval
  s390/hmcdrv: constify hmcdrv_ftp_ops structs
  s390/cio: add NULL test
  s390/cio: Change I/O instructions from inline to normal functions
  s390/cio: Introduce common I/O layer tracepoints
  s390/cio: Consolidate inline assemblies and related data definitions
  s390/cio: Fix incorrect xsch opcode specification
  s390/cio: Remove unused inline assemblies
  ...

6 files changed, 12 insertions, 14 deletions

diff --git a/arch/s390/mm/extable.c b/arch/s390/mm/extable.c
index 4d1ee88864e8..18c8b819b0aa 100644
--- a/arch/s390/mm/extable.c
+++ b/arch/s390/mm/extable.c
@@ -52,12 +52,16 @@ void sort_extable(struct exception_table_entry *start,
 	int i;
 
 	/* Normalize entries to being relative to the start of the section */
-	for (p = start, i = 0; p < finish; p++, i += 8)
+	for (p = start, i = 0; p < finish; p++, i += 8) {
 		p->insn += i;
+		p->fixup += i + 4;
+	}
 	sort(start, finish - start, sizeof(*start), cmp_ex, NULL);
 	/* Denormalize all entries */
-	for (p = start, i = 0; p < finish; p++, i += 8)
+	for (p = start, i = 0; p < finish; p++, i += 8) {
 		p->insn -= i;
+		p->fixup -= i + 4;
+	}
 }
 
 #ifdef CONFIG_MODULES
diff --git a/arch/s390/mm/extmem.c b/arch/s390/mm/extmem.c
index 18fccc303db7..a1bf4ad8925d 100644
--- a/arch/s390/mm/extmem.c
+++ b/arch/s390/mm/extmem.c
@@ -94,7 +94,7 @@ static DEFINE_MUTEX(dcss_lock);
 static LIST_HEAD(dcss_list);
 static char *segtype_string[] = { "SW", "EW", "SR", "ER", "SN", "EN", "SC",
 					"EW/EN-MIXED" };
-static int loadshr_scode, loadnsr_scode, findseg_scode;
+static int loadshr_scode, loadnsr_scode;
 static int segext_scode, purgeseg_scode;
 static int scode_set;
 
@@ -130,7 +130,6 @@ dcss_set_subcodes(void)
 		loadshr_scode = DCSS_LOADSHRX;
 		loadnsr_scode = DCSS_LOADNSRX;
 		purgeseg_scode = DCSS_PURGESEG;
-		findseg_scode = DCSS_FINDSEGX;
 		segext_scode = DCSS_SEGEXTX;
 		return 0;
 	}
@@ -138,7 +137,6 @@ dcss_set_subcodes(void)
 	loadshr_scode = DCSS_LOADNOLY;
 	loadnsr_scode = DCSS_LOADNSR;
 	purgeseg_scode = DCSS_PURGESEG;
-	findseg_scode = DCSS_FINDSEG;
 	segext_scode = DCSS_SEGEXT;
 	return 0;
 }
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index ec1a30d0d11a..1b903f6ad54a 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -254,7 +254,6 @@ static noinline void do_sigsegv(struct pt_regs *regs, int si_code)
 static noinline void do_no_context(struct pt_regs *regs)
 {
 	const struct exception_table_entry *fixup;
-	unsigned long address;
 
 	/* Are we prepared to handle this kernel fault?  */
 	fixup = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
@@ -267,7 +266,6 @@ static noinline void do_no_context(struct pt_regs *regs)
 	 * Oops. The kernel tried to access some bad page. We'll have to
 	 * terminate things with extreme prejudice.
 	 */
-	address = regs->int_parm_long & __FAIL_ADDR_MASK;
 	if (!user_space_fault(regs))
 		printk(KERN_ALERT "Unable to handle kernel pointer dereference"
 		       " in virtual kernel address space\n");
diff --git a/arch/s390/mm/gup.c b/arch/s390/mm/gup.c
index 12bbf0e8478f..21c74a71e2ab 100644
--- a/arch/s390/mm/gup.c
+++ b/arch/s390/mm/gup.c
@@ -233,6 +233,7 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
 	struct mm_struct *mm = current->mm;
 	int nr, ret;
 
+	might_sleep();
 	start &= PAGE_MASK;
 	nr = __get_user_pages_fast(start, nr_pages, write, pages);
 	if (nr == nr_pages)
diff --git a/arch/s390/mm/maccess.c b/arch/s390/mm/maccess.c
index 8a993a53fcd6..fec59c067d0d 100644
--- a/arch/s390/mm/maccess.c
+++ b/arch/s390/mm/maccess.c
@@ -163,11 +163,11 @@ static int is_swapped(unsigned long addr)
 	unsigned long lc;
 	int cpu;
 
-	if (addr < sizeof(struct _lowcore))
+	if (addr < sizeof(struct lowcore))
 		return 1;
 	for_each_online_cpu(cpu) {
 		lc = (unsigned long) lowcore_ptr[cpu];
-		if (addr > lc + sizeof(struct _lowcore) - 1 || addr < lc)
+		if (addr > lc + sizeof(struct lowcore) - 1 || addr < lc)
 			continue;
 		return 1;
 	}
diff --git a/arch/s390/mm/mem_detect.c b/arch/s390/mm/mem_detect.c
index e00f0d5d296d..d612cc3eec6a 100644
--- a/arch/s390/mm/mem_detect.c
+++ b/arch/s390/mm/mem_detect.c
@@ -14,8 +14,6 @@
 #include <asm/sclp.h>
 #include <asm/setup.h>
 
-#define ADDR2G (1ULL << 31)
-
 #define CHUNK_READ_WRITE 0
 #define CHUNK_READ_ONLY  1
 
@@ -27,15 +25,14 @@ static inline void memblock_physmem_add(phys_addr_t start, phys_addr_t size)
 
 void __init detect_memory_memblock(void)
 {
-	unsigned long long memsize, rnmax, rzm;
-	unsigned long addr, size;
+	unsigned long memsize, rnmax, rzm, addr, size;
 	int type;
 
 	rzm = sclp.rzm;
 	rnmax = sclp.rnmax;
 	memsize = rzm * rnmax;
 	if (!rzm)
-		rzm = 1ULL << 17;
+		rzm = 1UL << 17;
 	max_physmem_end = memsize;
 	addr = 0;
 	/* keep memblock lists close to the kernel */