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

Pull s390 updates from Martin Schwidefsky:

 - The remaining patches for the z13 machine support: kernel build
   option for z13, the cache synonym avoidance, SMT support,
   compare-and-delay for spinloops and the CES5S crypto adapater.

 - The ftrace support for function tracing with the gcc hotpatch option.
   This touches common code Makefiles, Steven is ok with the changes.

 - The hypfs file system gets an extension to access diagnose 0x0c data
   in user space for performance analysis for Linux running under z/VM.

 - The iucv hvc console gets wildcard spport for the user id filtering.

 - The cacheinfo code is converted to use the generic infrastructure.

 - Cleanup and bug fixes.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (42 commits)
  s390/process: free vx save area when releasing tasks
  s390/hypfs: Eliminate hypfs interval
  s390/hypfs: Add diagnose 0c support
  s390/cacheinfo: don't use smp_processor_id() in preemptible context
  s390/zcrypt: fixed domain scanning problem (again)
  s390/smp: increase maximum value of NR_CPUS to 512
  s390/jump label: use different nop instruction
  s390/jump label: add sanity checks
  s390/mm: correct missing space when reporting user process faults
  s390/dasd: cleanup profiling
  s390/dasd: add locking for global_profile access
  s390/ftrace: hotpatch support for function tracing
  ftrace: let notrace function attribute disable hotpatching if necessary
  ftrace: allow architectures to specify ftrace compile options
  s390: reintroduce diag 44 calls for cpu_relax()
  s390/zcrypt: Add support for new crypto express (CEX5S) adapter.
  s390/zcrypt: Number of supported ap domains is not retrievable.
  s390/spinlock: add compare-and-delay to lock wait loops
  s390/tape: remove redundant if statement
  s390/hvc_iucv: add simple wildcard matches to the iucv allow filter
  ...

4 files changed, 151 insertions, 10 deletions

diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 9065d5a..3ff8653 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -171,7 +171,7 @@ static void dump_pagetable(unsigned long asce, unsigned long address)
 		table = table + ((address >> 20) & 0x7ff);
 		if (bad_address(table))
 			goto bad;
-		pr_cont(KERN_CONT "S:%016lx ", *table);
+		pr_cont("S:%016lx ", *table);
 		if (*table & (_SEGMENT_ENTRY_INVALID | _SEGMENT_ENTRY_LARGE))
 			goto out;
 		table = (unsigned long *)(*table & _SEGMENT_ENTRY_ORIGIN);
@@ -261,7 +261,7 @@ static inline void report_user_fault(struct pt_regs *regs, long signr)
 		return;
 	if (!printk_ratelimit())
 		return;
-	printk(KERN_ALERT "User process fault: interruption code %04x ilc:%d",
+	printk(KERN_ALERT "User process fault: interruption code %04x ilc:%d ",
 	       regs->int_code & 0xffff, regs->int_code >> 17);
 	print_vma_addr(KERN_CONT "in ", regs->psw.addr & PSW_ADDR_INSN);
 	printk(KERN_CONT "\n");
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index c7235e0..d35b151 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -71,13 +71,16 @@ static void __init setup_zero_pages(void)
 		break;
 	case 0x2827:	/* zEC12 */
 	case 0x2828:	/* zEC12 */
-	default:
 		order = 5;
 		break;
+	case 0x2964:	/* z13 */
+	default:
+		order = 7;
+		break;
 	}
 	/* Limit number of empty zero pages for small memory sizes */
-	if (order > 2 && totalram_pages <= 16384)
-		order = 2;
+	while (order > 2 && (totalram_pages >> 10) < (1UL << order))
+		order--;
 
 	empty_zero_page = __get_free_pages(GFP_KERNEL | __GFP_ZERO, order);
 	if (!empty_zero_page)
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index 9b436c2..d008f638 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -28,8 +28,12 @@
 #include <linux/module.h>
 #include <linux/random.h>
 #include <linux/compat.h>
+#include <linux/security.h>
 #include <asm/pgalloc.h>
 
+unsigned long mmap_rnd_mask;
+unsigned long mmap_align_mask;
+
 static unsigned long stack_maxrandom_size(void)
 {
 	if (!(current->flags & PF_RANDOMIZE))
@@ -60,8 +64,10 @@ static unsigned long mmap_rnd(void)
 {
 	if (!(current->flags & PF_RANDOMIZE))
 		return 0;
-	/* 8MB randomization for mmap_base */
-	return (get_random_int() & 0x7ffUL) << PAGE_SHIFT;
+	if (is_32bit_task())
+		return (get_random_int() & 0x7ff) << PAGE_SHIFT;
+	else
+		return (get_random_int() & mmap_rnd_mask) << PAGE_SHIFT;
 }
 
 static unsigned long mmap_base_legacy(void)
@@ -81,6 +87,106 @@ static inline unsigned long mmap_base(void)
 	return STACK_TOP - stack_maxrandom_size() - mmap_rnd() - gap;
 }
 
+unsigned long
+arch_get_unmapped_area(struct file *filp, unsigned long addr,
+		unsigned long len, unsigned long pgoff, unsigned long flags)
+{
+	struct mm_struct *mm = current->mm;
+	struct vm_area_struct *vma;
+	struct vm_unmapped_area_info info;
+	int do_color_align;
+
+	if (len > TASK_SIZE - mmap_min_addr)
+		return -ENOMEM;
+
+	if (flags & MAP_FIXED)
+		return addr;
+
+	if (addr) {
+		addr = PAGE_ALIGN(addr);
+		vma = find_vma(mm, addr);
+		if (TASK_SIZE - len >= addr && addr >= mmap_min_addr &&
+		    (!vma || addr + len <= vma->vm_start))
+			return addr;
+	}
+
+	do_color_align = 0;
+	if (filp || (flags & MAP_SHARED))
+		do_color_align = !is_32bit_task();
+
+	info.flags = 0;
+	info.length = len;
+	info.low_limit = mm->mmap_base;
+	info.high_limit = TASK_SIZE;
+	info.align_mask = do_color_align ? (mmap_align_mask << PAGE_SHIFT) : 0;
+	info.align_offset = pgoff << PAGE_SHIFT;
+	return vm_unmapped_area(&info);
+}
+
+unsigned long
+arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
+			  const unsigned long len, const unsigned long pgoff,
+			  const unsigned long flags)
+{
+	struct vm_area_struct *vma;
+	struct mm_struct *mm = current->mm;
+	unsigned long addr = addr0;
+	struct vm_unmapped_area_info info;
+	int do_color_align;
+
+	/* requested length too big for entire address space */
+	if (len > TASK_SIZE - mmap_min_addr)
+		return -ENOMEM;
+
+	if (flags & MAP_FIXED)
+		return addr;
+
+	/* requesting a specific address */
+	if (addr) {
+		addr = PAGE_ALIGN(addr);
+		vma = find_vma(mm, addr);
+		if (TASK_SIZE - len >= addr && addr >= mmap_min_addr &&
+				(!vma || addr + len <= vma->vm_start))
+			return addr;
+	}
+
+	do_color_align = 0;
+	if (filp || (flags & MAP_SHARED))
+		do_color_align = !is_32bit_task();
+
+	info.flags = VM_UNMAPPED_AREA_TOPDOWN;
+	info.length = len;
+	info.low_limit = max(PAGE_SIZE, mmap_min_addr);
+	info.high_limit = mm->mmap_base;
+	info.align_mask = do_color_align ? (mmap_align_mask << PAGE_SHIFT) : 0;
+	info.align_offset = pgoff << PAGE_SHIFT;
+	addr = vm_unmapped_area(&info);
+
+	/*
+	 * A failed mmap() very likely causes application failure,
+	 * so fall back to the bottom-up function here. This scenario
+	 * can happen with large stack limits and large mmap()
+	 * allocations.
+	 */
+	if (addr & ~PAGE_MASK) {
+		VM_BUG_ON(addr != -ENOMEM);
+		info.flags = 0;
+		info.low_limit = TASK_UNMAPPED_BASE;
+		info.high_limit = TASK_SIZE;
+		addr = vm_unmapped_area(&info);
+	}
+
+	return addr;
+}
+
+unsigned long randomize_et_dyn(void)
+{
+	unsigned long base;
+
+	base = (STACK_TOP / 3 * 2) & (~mmap_align_mask << PAGE_SHIFT);
+	return base + mmap_rnd();
+}
+
 #ifndef CONFIG_64BIT
 
 /*
@@ -177,4 +283,36 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
 	}
 }
 
+static int __init setup_mmap_rnd(void)
+{
+	struct cpuid cpu_id;
+
+	get_cpu_id(&cpu_id);
+	switch (cpu_id.machine) {
+	case 0x9672:
+	case 0x2064:
+	case 0x2066:
+	case 0x2084:
+	case 0x2086:
+	case 0x2094:
+	case 0x2096:
+	case 0x2097:
+	case 0x2098:
+	case 0x2817:
+	case 0x2818:
+	case 0x2827:
+	case 0x2828:
+		mmap_rnd_mask = 0x7ffUL;
+		mmap_align_mask = 0UL;
+		break;
+	case 0x2964:	/* z13 */
+	default:
+		mmap_rnd_mask = 0x3ff80UL;
+		mmap_align_mask = 0x7fUL;
+		break;
+	}
+	return 0;
+}
+early_initcall(setup_mmap_rnd);
+
 #endif
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index 3cf8cc0..b2c1542 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -527,7 +527,7 @@ int __gmap_link(struct gmap *gmap, unsigned long gaddr, unsigned long vmaddr)
 		table += (gaddr >> 53) & 0x7ff;
 		if ((*table & _REGION_ENTRY_INVALID) &&
 		    gmap_alloc_table(gmap, table, _REGION2_ENTRY_EMPTY,
-				     gaddr & 0xffe0000000000000))
+				     gaddr & 0xffe0000000000000UL))
 			return -ENOMEM;
 		table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
 	}
@@ -535,7 +535,7 @@ int __gmap_link(struct gmap *gmap, unsigned long gaddr, unsigned long vmaddr)
 		table += (gaddr >> 42) & 0x7ff;
 		if ((*table & _REGION_ENTRY_INVALID) &&
 		    gmap_alloc_table(gmap, table, _REGION3_ENTRY_EMPTY,
-				     gaddr & 0xfffffc0000000000))
+				     gaddr & 0xfffffc0000000000UL))
 			return -ENOMEM;
 		table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
 	}
@@ -543,7 +543,7 @@ int __gmap_link(struct gmap *gmap, unsigned long gaddr, unsigned long vmaddr)
 		table += (gaddr >> 31) & 0x7ff;
 		if ((*table & _REGION_ENTRY_INVALID) &&
 		    gmap_alloc_table(gmap, table, _SEGMENT_ENTRY_EMPTY,
-				     gaddr & 0xffffffff80000000))
+				     gaddr & 0xffffffff80000000UL))
 			return -ENOMEM;
 		table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
 	}