16 files changed, 113 insertions, 53 deletions

diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
index 1f031ddd0667..85e664b6a5f1 100644
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -35,6 +35,8 @@ extern void __ucmpdi2(void);
 extern void __udivsi3(void);
 extern void __umodsi3(void);
 extern void __do_div64(void);
+extern void __bswapsi2(void);
+extern void __bswapdi2(void);
 
 extern void __aeabi_idiv(void);
 extern void __aeabi_idivmod(void);
@@ -114,6 +116,8 @@ EXPORT_SYMBOL(__ucmpdi2);
 EXPORT_SYMBOL(__udivsi3);
 EXPORT_SYMBOL(__umodsi3);
 EXPORT_SYMBOL(__do_div64);
+EXPORT_SYMBOL(__bswapsi2);
+EXPORT_SYMBOL(__bswapdi2);
 
 #ifdef CONFIG_AEABI
 EXPORT_SYMBOL(__aeabi_idiv);
diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
index c6ca7e376773..166e945de832 100644
--- a/arch/arm/kernel/calls.S
+++ b/arch/arm/kernel/calls.S
@@ -389,6 +389,8 @@
                 CALL(sys_process_vm_writev)
                 CALL(sys_kcmp)
                 CALL(sys_finit_module)
+/* 380 */       CALL(sys_sched_setattr)
+                CALL(sys_sched_getattr)
 #ifndef syscalls_counted
 .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
 #define syscalls_counted
diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c
index 739c3dfc1da2..f751714d52c1 100644
--- a/arch/arm/kernel/devtree.c
+++ b/arch/arm/kernel/devtree.c
@@ -33,7 +33,7 @@ void __init early_init_dt_add_memory_arch(u64 base, u64 size)
 
 void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
 {
-        return alloc_bootmem_align(size, align);
+        return memblock_virt_alloc(size, align);
 }
 
 void __init arm_dt_memblock_reserve(void)
@@ -171,7 +171,7 @@ void __init arm_dt_init_cpu_maps(void)
 
 bool arch_match_cpu_phys_id(int cpu, u64 phys_id)
 {
-        return (phys_id & MPIDR_HWID_BITMASK) == cpu_logical_map(cpu);
+        return phys_id == cpu_logical_map(cpu);
 }
 
 static const void * __init arch_get_next_mach(const char *const **match)
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index b3fb8c9e1ff2..1879e8dd2acc 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -451,9 +451,11 @@ __und_usr_thumb:
         .arch   armv6t2
 #endif
 2:      ldrht   r5, [r4]
+ARM_BE8(rev16   r5, r5)                         @ little endian instruction
         cmp     r5, #0xe800                     @ 32bit instruction if xx != 0
         blo     __und_usr_fault_16              @ 16bit undefined instruction
 3:      ldrht   r0, [r2]
+ARM_BE8(rev16   r0, r0)                         @ little endian instruction
         add     r2, r2, #2                      @ r2 is PC + 2, make it PC + 4
         str     r2, [sp, #S_PC]                 @ it's a 2x16bit instr, update
         orr     r0, r0, r5, lsl #16
diff --git a/arch/arm/kernel/entry-v7m.S b/arch/arm/kernel/entry-v7m.S
index 52b26432c9a9..2260f1855820 100644
--- a/arch/arm/kernel/entry-v7m.S
+++ b/arch/arm/kernel/entry-v7m.S
@@ -14,8 +14,6 @@
 #include <asm/thread_notify.h>
 #include <asm/v7m.h>
 
-#include <mach/entry-macro.S>
-
 #include "entry-header.S"
 
 #ifdef CONFIG_TRACE_IRQFLAGS
diff --git a/arch/arm/kernel/etm.c b/arch/arm/kernel/etm.c
index 8ff0ecdc637f..131a6ab5f355 100644
--- a/arch/arm/kernel/etm.c
+++ b/arch/arm/kernel/etm.c
@@ -385,7 +385,6 @@ out:
         return ret;
 
 out_unmap:
-        amba_set_drvdata(dev, NULL);
         iounmap(t->etb_regs);
 
 out_release:
@@ -398,8 +397,6 @@ static int etb_remove(struct amba_device *dev)
 {
         struct tracectx *t = amba_get_drvdata(dev);
 
-        amba_set_drvdata(dev, NULL);
-
         iounmap(t->etb_regs);
         t->etb_regs = NULL;
 
@@ -588,7 +585,6 @@ out:
         return ret;
 
 out_unmap:
-        amba_set_drvdata(dev, NULL);
         iounmap(t->etm_regs);
 
 out_release:
@@ -601,8 +597,6 @@ static int etm_remove(struct amba_device *dev)
 {
         struct tracectx *t = amba_get_drvdata(dev);
 
-        amba_set_drvdata(dev, NULL);
-
         iounmap(t->etm_regs);
         t->etm_regs = NULL;
 
diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S
index 47cd974e57ea..c96ecacb2021 100644
--- a/arch/arm/kernel/head-common.S
+++ b/arch/arm/kernel/head-common.S
@@ -177,6 +177,18 @@ __lookup_processor_type_data:
         .long   __proc_info_end
         .size   __lookup_processor_type_data, . - __lookup_processor_type_data
 
+__error_lpae:
+#ifdef CONFIG_DEBUG_LL
+        adr     r0, str_lpae
+        bl      printascii
+        b       __error
+str_lpae: .asciz "\nError: Kernel with LPAE support, but CPU does not support LPAE.\n"
+#else
+        b       __error
+#endif
+        .align
+ENDPROC(__error_lpae)
+
 __error_p:
 #ifdef CONFIG_DEBUG_LL
         adr     r0, str_p1
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 32f317e5828a..f5f381d91556 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -52,7 +52,8 @@
         .equ    swapper_pg_dir, KERNEL_RAM_VADDR - PG_DIR_SIZE
 
         .macro  pgtbl, rd, phys
-        add     \rd, \phys, #TEXT_OFFSET - PG_DIR_SIZE
+        add     \rd, \phys, #TEXT_OFFSET
+        sub     \rd, \rd, #PG_DIR_SIZE
         .endm
 
 /*
@@ -101,7 +102,7 @@ ENTRY(stext)
         and     r3, r3, #0xf                    @ extract VMSA support
         cmp     r3, #5                          @ long-descriptor translation table format?
  THUMB( it      lo )                            @ force fixup-able long branch encoding
-        blo     __error_p                       @ only classic page table format
+        blo     __error_lpae                    @ only classic page table format
 #endif
 
 #ifndef CONFIG_XIP_KERNEL
diff --git a/arch/arm/kernel/io.c b/arch/arm/kernel/io.c
index dcd5b4d86143..9203cf883330 100644
--- a/arch/arm/kernel/io.c
+++ b/arch/arm/kernel/io.c
@@ -1,6 +1,41 @@
 #include <linux/export.h>
 #include <linux/types.h>
 #include <linux/io.h>
+#include <linux/spinlock.h>
+
+static DEFINE_RAW_SPINLOCK(__io_lock);
+
+/*
+ * Generic atomic MMIO modify.
+ *
+ * Allows thread-safe access to registers shared by unrelated subsystems.
+ * The access is protected by a single MMIO-wide lock.
+ */
+void atomic_io_modify_relaxed(void __iomem *reg, u32 mask, u32 set)
+{
+        unsigned long flags;
+        u32 value;
+
+        raw_spin_lock_irqsave(&__io_lock, flags);
+        value = readl_relaxed(reg) & ~mask;
+        value |= (set & mask);
+        writel_relaxed(value, reg);
+        raw_spin_unlock_irqrestore(&__io_lock, flags);
+}
+EXPORT_SYMBOL(atomic_io_modify_relaxed);
+
+void atomic_io_modify(void __iomem *reg, u32 mask, u32 set)
+{
+        unsigned long flags;
+        u32 value;
+
+        raw_spin_lock_irqsave(&__io_lock, flags);
+        value = readl_relaxed(reg) & ~mask;
+        value |= (set & mask);
+        writel(value, reg);
+        raw_spin_unlock_irqrestore(&__io_lock, flags);
+}
+EXPORT_SYMBOL(atomic_io_modify);
 
 /*
  * Copy data from IO memory space to "real" memory space.
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index bc3f2efa0d86..789d846a9184 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -99,10 +99,6 @@ int armpmu_event_set_period(struct perf_event *event)
         s64 period = hwc->sample_period;
         int ret = 0;
 
-        /* The period may have been changed by PERF_EVENT_IOC_PERIOD */
-        if (unlikely(period != hwc->last_period))
-                left = period - (hwc->last_period - left);
-
         if (unlikely(left <= -period)) {
                 left = period;
                 local64_set(&hwc->period_left, left);
diff --git a/arch/arm/kernel/perf_event_cpu.c b/arch/arm/kernel/perf_event_cpu.c
index d85055cd24ba..20d553c9f5e2 100644
--- a/arch/arm/kernel/perf_event_cpu.c
+++ b/arch/arm/kernel/perf_event_cpu.c
@@ -254,7 +254,7 @@ static int probe_current_pmu(struct arm_pmu *pmu)
 static int cpu_pmu_device_probe(struct platform_device *pdev)
 {
         const struct of_device_id *of_id;
-        int (*init_fn)(struct arm_pmu *);
+        const int (*init_fn)(struct arm_pmu *);
         struct device_node *node = pdev->dev.of_node;
         struct arm_pmu *pmu;
         int ret = -ENODEV;
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 987a7f5bce5f..1e8b030dbefd 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -334,7 +334,7 @@ static void __init cacheid_init(void)
                 cacheid = CACHEID_VIVT;
         }
 
-        printk("CPU: %s data cache, %s instruction cache\n",
+        pr_info("CPU: %s data cache, %s instruction cache\n",
                 cache_is_vivt() ? "VIVT" :
                 cache_is_vipt_aliasing() ? "VIPT aliasing" :
                 cache_is_vipt_nonaliasing() ? "PIPT / VIPT nonaliasing" : "unknown",
@@ -416,7 +416,7 @@ void notrace cpu_init(void)
         struct stack *stk = &stacks[cpu];
 
         if (cpu >= NR_CPUS) {
-                printk(KERN_CRIT "CPU%u: bad primary CPU number\n", cpu);
+                pr_crit("CPU%u: bad primary CPU number\n", cpu);
                 BUG();
         }
 
@@ -484,7 +484,7 @@ void __init smp_setup_processor_id(void)
          */
         set_my_cpu_offset(0);
 
-        printk(KERN_INFO "Booting Linux on physical CPU 0x%x\n", mpidr);
+        pr_info("Booting Linux on physical CPU 0x%x\n", mpidr);
 }
 
 struct mpidr_hash mpidr_hash;
@@ -564,8 +564,8 @@ static void __init setup_processor(void)
          */
         list = lookup_processor_type(read_cpuid_id());
         if (!list) {
-                printk("CPU configuration botched (ID %08x), unable "
-                       "to continue.\n", read_cpuid_id());
+                pr_err("CPU configuration botched (ID %08x), unable to continue.\n",
+                       read_cpuid_id());
                 while (1);
         }
 
@@ -585,9 +585,9 @@ static void __init setup_processor(void)
         cpu_cache = *list->cache;
 #endif
 
-        printk("CPU: %s [%08x] revision %d (ARMv%s), cr=%08lx\n",
-               cpu_name, read_cpuid_id(), read_cpuid_id() & 15,
-               proc_arch[cpu_architecture()], cr_alignment);
+        pr_info("CPU: %s [%08x] revision %d (ARMv%s), cr=%08lx\n",
+                cpu_name, read_cpuid_id(), read_cpuid_id() & 15,
+                proc_arch[cpu_architecture()], cr_alignment);
 
         snprintf(init_utsname()->machine, __NEW_UTS_LEN + 1, "%s%c",
                  list->arch_name, ENDIANNESS);
@@ -629,8 +629,8 @@ int __init arm_add_memory(u64 start, u64 size)
         u64 aligned_start;
 
         if (meminfo.nr_banks >= NR_BANKS) {
-                printk(KERN_CRIT "NR_BANKS too low, "
-                        "ignoring memory at 0x%08llx\n", (long long)start);
+                pr_crit("NR_BANKS too low, ignoring memory at 0x%08llx\n",
+                        (long long)start);
                 return -EINVAL;
         }
 
@@ -643,14 +643,14 @@ int __init arm_add_memory(u64 start, u64 size)
 
 #ifndef CONFIG_ARCH_PHYS_ADDR_T_64BIT
         if (aligned_start > ULONG_MAX) {
-                printk(KERN_CRIT "Ignoring memory at 0x%08llx outside "
-                       "32-bit physical address space\n", (long long)start);
+                pr_crit("Ignoring memory at 0x%08llx outside 32-bit physical address space\n",
+                        (long long)start);
                 return -EINVAL;
         }
 
         if (aligned_start + size > ULONG_MAX) {
-                printk(KERN_CRIT "Truncating memory at 0x%08llx to fit in "
-                        "32-bit physical address space\n", (long long)start);
+                pr_crit("Truncating memory at 0x%08llx to fit in 32-bit physical address space\n",
+                        (long long)start);
                 /*
                  * To ensure bank->start + bank->size is representable in
                  * 32 bits, we use ULONG_MAX as the upper limit rather than 4GB.
@@ -660,6 +660,20 @@ int __init arm_add_memory(u64 start, u64 size)
         }
 #endif
 
+        if (aligned_start < PHYS_OFFSET) {
+                if (aligned_start + size <= PHYS_OFFSET) {
+                        pr_info("Ignoring memory below PHYS_OFFSET: 0x%08llx-0x%08llx\n",
+                                aligned_start, aligned_start + size);
+                        return -EINVAL;
+                }
+
+                pr_info("Ignoring memory below PHYS_OFFSET: 0x%08llx-0x%08llx\n",
+                        aligned_start, (u64)PHYS_OFFSET);
+
+                size -= PHYS_OFFSET - aligned_start;
+                aligned_start = PHYS_OFFSET;
+        }
+
         bank->start = aligned_start;
         bank->size = size & ~(phys_addr_t)(PAGE_SIZE - 1);
 
@@ -717,7 +731,7 @@ static void __init request_standard_resources(const struct machine_desc *mdesc)
         kernel_data.end     = virt_to_phys(_end - 1);
 
         for_each_memblock(memory, region) {
-                res = alloc_bootmem_low(sizeof(*res));
+                res = memblock_virt_alloc(sizeof(*res), 0);
                 res->name  = "System RAM";
                 res->start = __pfn_to_phys(memblock_region_memory_base_pfn(region));
                 res->end = __pfn_to_phys(memblock_region_memory_end_pfn(region)) - 1;
@@ -817,18 +831,17 @@ static void __init reserve_crashkernel(void)
         if (ret)
                 return;
 
-        ret = reserve_bootmem(crash_base, crash_size, BOOTMEM_EXCLUSIVE);
+        ret = memblock_reserve(crash_base, crash_size);
         if (ret < 0) {
-                printk(KERN_WARNING "crashkernel reservation failed - "
-                       "memory is in use (0x%lx)\n", (unsigned long)crash_base);
+                pr_warn("crashkernel reservation failed - memory is in use (0x%lx)\n",
+                        (unsigned long)crash_base);
                 return;
         }
 
-        printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
-               "for crashkernel (System RAM: %ldMB)\n",
-               (unsigned long)(crash_size >> 20),
-               (unsigned long)(crash_base >> 20),
-               (unsigned long)(total_mem >> 20));
+        pr_info("Reserving %ldMB of memory at %ldMB for crashkernel (System RAM: %ldMB)\n",
+                (unsigned long)(crash_size >> 20),
+                (unsigned long)(crash_base >> 20),
+                (unsigned long)(total_mem >> 20));
 
         crashk_res.start = crash_base;
         crashk_res.end = crash_base + crash_size - 1;
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index dc894ab3622b..b7b4c86e338b 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -105,8 +105,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *idle)
         secondary_data.pgdir = get_arch_pgd(idmap_pgd);
         secondary_data.swapper_pg_dir = get_arch_pgd(swapper_pg_dir);
 #endif
-        __cpuc_flush_dcache_area(&secondary_data, sizeof(secondary_data));
-        outer_clean_range(__pa(&secondary_data), __pa(&secondary_data + 1));
+        sync_cache_w(&secondary_data);
 
         /*
          * Now bring the CPU into our world.
@@ -294,6 +293,9 @@ void __ref cpu_die(void)
         if (smp_ops.cpu_die)
                 smp_ops.cpu_die(cpu);
 
+        pr_warn("CPU%u: smp_ops.cpu_die() returned, trying to resuscitate\n",
+                cpu);
+
         /*
          * Do not return to the idle loop - jump back to the secondary
          * cpu initialisation.  There's some initialisation which needs
diff --git a/arch/arm/kernel/tcm.c b/arch/arm/kernel/tcm.c
index f50f19e5c138..7a3be1d4d0b1 100644
--- a/arch/arm/kernel/tcm.c
+++ b/arch/arm/kernel/tcm.c
@@ -52,7 +52,7 @@ static struct map_desc dtcm_iomap[] __initdata = {
                 .virtual        = DTCM_OFFSET,
                 .pfn            = __phys_to_pfn(DTCM_OFFSET),
                 .length         = 0,
-                .type           = MT_MEMORY_DTCM
+                .type           = MT_MEMORY_RW_DTCM
         }
 };
 
@@ -61,7 +61,7 @@ static struct map_desc itcm_iomap[] __initdata = {
                 .virtual        = ITCM_OFFSET,
                 .pfn            = __phys_to_pfn(ITCM_OFFSET),
                 .length         = 0,
-                .type           = MT_MEMORY_ITCM
+                .type           = MT_MEMORY_RWX_ITCM,
         }
 };
 
diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c
index 85a87370f144..0bc94b1fd1ae 100644
--- a/arch/arm/kernel/topology.c
+++ b/arch/arm/kernel/topology.c
@@ -68,16 +68,16 @@ struct cpu_efficiency {
  * Processors that are not defined in the table,
  * use the default SCHED_POWER_SCALE value for cpu_scale.
  */
-struct cpu_efficiency table_efficiency[] = {
+static const struct cpu_efficiency table_efficiency[] = {
         {"arm,cortex-a15", 3891},
         {"arm,cortex-a7",  2048},
         {NULL, },
 };
 
-unsigned long *__cpu_capacity;
+static unsigned long *__cpu_capacity;
 #define cpu_capacity(cpu)       __cpu_capacity[cpu]
 
-unsigned long middle_capacity = 1;
+static unsigned long middle_capacity = 1;
 
 /*
  * Iterate all CPUs' descriptor in DT and compute the efficiency
@@ -89,7 +89,7 @@ unsigned long middle_capacity = 1;
  */
 static void __init parse_dt_topology(void)
 {
-        struct cpu_efficiency *cpu_eff;
+        const struct cpu_efficiency *cpu_eff;
         struct device_node *cn = NULL;
         unsigned long min_capacity = (unsigned long)(-1);
         unsigned long max_capacity = 0;
@@ -158,7 +158,7 @@ static void __init parse_dt_topology(void)
  * boot. The update of all CPUs is in O(n^2) for heteregeneous system but the
  * function returns directly for SMP system.
  */
-void update_cpu_power(unsigned int cpu)
+static void update_cpu_power(unsigned int cpu)
 {
         if (!cpu_capacity(cpu))
                 return;
@@ -185,7 +185,7 @@ const struct cpumask *cpu_coregroup_mask(int cpu)
         return &cpu_topology[cpu].core_sibling;
 }
 
-void update_siblings_masks(unsigned int cpuid)
+static void update_siblings_masks(unsigned int cpuid)
 {
         struct cputopo_arm *cpu_topo, *cpuid_topo = &cpu_topology[cpuid];
         int cpu;
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 6eda3bf85c52..172ee18ff124 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -62,7 +62,7 @@ static void dump_mem(const char *, const char *, unsigned long, unsigned long);
 void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame)
 {
 #ifdef CONFIG_KALLSYMS
-        printk("[<%08lx>] (%pS) from [<%08lx>] (%pS)\n", where, (void *)where, from, (void *)from);
+        printk("[<%08lx>] (%ps) from [<%08lx>] (%pS)\n", where, (void *)where, from, (void *)from);
 #else
         printk("Function entered at [<%08lx>] from [<%08lx>]\n", where, from);
 #endif
@@ -431,9 +431,10 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs)
                         instr2 = __mem_to_opcode_thumb16(instr2);
                         instr = __opcode_thumb32_compose(instr, instr2);
                 }
-        } else if (get_user(instr, (u32 __user *)pc)) {
+        } else {
+                if (get_user(instr, (u32 __user *)pc))
+                        goto die_sig;
                 instr = __mem_to_opcode_arm(instr);
-                goto die_sig;
         }
 
         if (call_undef_hook(regs, instr) == 0)