26 files changed, 163 insertions, 109 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 2c71a8f3535..5ebc5d922ea 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -195,8 +195,7 @@ config VECTORS_BASE
           The base address of exception vectors.
 
 config ARM_PATCH_PHYS_VIRT
-        bool "Patch physical to virtual translations at runtime (EXPERIMENTAL)"
-        depends on EXPERIMENTAL
+        bool "Patch physical to virtual translations at runtime"
         depends on !XIP_KERNEL && MMU
         depends on !ARCH_REALVIEW || !SPARSEMEM
         help
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index 05b377616fd..cc2020c2c70 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -323,7 +323,11 @@ int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs,
 #endif
         s = find_mod_section(hdr, sechdrs, ".alt.smp.init");
         if (s && !is_smp())
+#ifdef CONFIG_SMP_ON_UP
                 fixup_smp((void *)s->sh_addr, s->sh_size);
+#else
+                return -EINVAL;
+#endif
         return 0;
 }
 
diff --git a/arch/arm/mach-s3c64xx/mach-crag6410.c b/arch/arm/mach-s3c64xx/mach-crag6410.c
index 9026249233a..af0c2fe1ea3 100644
--- a/arch/arm/mach-s3c64xx/mach-crag6410.c
+++ b/arch/arm/mach-s3c64xx/mach-crag6410.c
@@ -65,7 +65,7 @@
 #include <plat/iic.h>
 #include <plat/pm.h>
 
-#include <sound/wm8915.h>
+#include <sound/wm8996.h>
 #include <sound/wm8962.h>
 #include <sound/wm9081.h>
 
@@ -614,7 +614,7 @@ static struct wm831x_pdata glenfarclas_pmic_pdata __initdata = {
         .disable_touch = true,
 };
 
-static struct wm8915_retune_mobile_config wm8915_retune[] = {
+static struct wm8996_retune_mobile_config wm8996_retune[] = {
         {
                 .name = "Sub LPF",
                 .rate = 48000,
@@ -635,12 +635,12 @@ static struct wm8915_retune_mobile_config wm8915_retune[] = {
         },
 };
 
-static struct wm8915_pdata wm8915_pdata __initdata = {
+static struct wm8996_pdata wm8996_pdata __initdata = {
         .ldo_ena = S3C64XX_GPN(7),
         .gpio_base = CODEC_GPIO_BASE,
         .micdet_def = 1,
-        .inl_mode = WM8915_DIFFERRENTIAL_1,
-        .inr_mode = WM8915_DIFFERRENTIAL_1,
+        .inl_mode = WM8996_DIFFERRENTIAL_1,
+        .inr_mode = WM8996_DIFFERRENTIAL_1,
 
         .irq_flags = IRQF_TRIGGER_RISING,
 
@@ -652,8 +652,8 @@ static struct wm8915_pdata wm8915_pdata __initdata = {
                 0x020e, /* GPIO5 == CLKOUT */
         },
 
-        .retune_mobile_cfgs = wm8915_retune,
-        .num_retune_mobile_cfgs = ARRAY_SIZE(wm8915_retune),
+        .retune_mobile_cfgs = wm8996_retune,
+        .num_retune_mobile_cfgs = ARRAY_SIZE(wm8996_retune),
 };
 
 static struct wm8962_pdata wm8962_pdata __initdata = {
@@ -679,8 +679,8 @@ static struct i2c_board_info i2c_devs1[] __initdata = {
           .platform_data = &glenfarclas_pmic_pdata },
 
         { I2C_BOARD_INFO("wm1250-ev1", 0x27) },
-        { I2C_BOARD_INFO("wm8915", 0x1a),
-          .platform_data = &wm8915_pdata,
+        { I2C_BOARD_INFO("wm8996", 0x1a),
+          .platform_data = &wm8996_pdata,
           .irq = GLENFARCLAS_PMIC_IRQ_BASE + WM831X_IRQ_GPIO_2,
         },
         { I2C_BOARD_INFO("wm9081", 0x6c),
diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c
index be7c638b648..cfbcf8b9559 100644
--- a/arch/arm/mm/alignment.c
+++ b/arch/arm/mm/alignment.c
@@ -22,6 +22,7 @@
 #include <linux/sched.h>
 #include <linux/uaccess.h>
 
+#include <asm/system.h>
 #include <asm/unaligned.h>
 
 #include "fault.h"
@@ -95,6 +96,33 @@ static const char *usermode_action[] = {
         "signal+warn"
 };
 
+/* Return true if and only if the ARMv6 unaligned access model is in use. */
+static bool cpu_is_v6_unaligned(void)
+{
+        return cpu_architecture() >= CPU_ARCH_ARMv6 && (cr_alignment & CR_U);
+}
+
+static int safe_usermode(int new_usermode, bool warn)
+{
+        /*
+         * ARMv6 and later CPUs can perform unaligned accesses for
+         * most single load and store instructions up to word size.
+         * LDM, STM, LDRD and STRD still need to be handled.
+         *
+         * Ignoring the alignment fault is not an option on these
+         * CPUs since we spin re-faulting the instruction without
+         * making any progress.
+         */
+        if (cpu_is_v6_unaligned() && !(new_usermode & (UM_FIXUP | UM_SIGNAL))) {
+                new_usermode |= UM_FIXUP;
+
+                if (warn)
+                        printk(KERN_WARNING "alignment: ignoring faults is unsafe on this CPU.  Defaulting to fixup mode.\n");
+        }
+
+        return new_usermode;
+}
+
 static int alignment_proc_show(struct seq_file *m, void *v)
 {
         seq_printf(m, "User:\t\t%lu\n", ai_user);
@@ -125,7 +153,7 @@ static ssize_t alignment_proc_write(struct file *file, const char __user *buffer
                 if (get_user(mode, buffer))
                         return -EFAULT;
                 if (mode >= '0' && mode <= '5')
-                        ai_usermode = mode - '0';
+                        ai_usermode = safe_usermode(mode - '0', true);
         }
         return count;
 }
@@ -886,9 +914,16 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
         if (ai_usermode & UM_FIXUP)
                 goto fixup;
 
-        if (ai_usermode & UM_SIGNAL)
-                force_sig(SIGBUS, current);
-        else {
+        if (ai_usermode & UM_SIGNAL) {
+                siginfo_t si;
+
+                si.si_signo = SIGBUS;
+                si.si_errno = 0;
+                si.si_code = BUS_ADRALN;
+                si.si_addr = (void __user *)addr;
+
+                force_sig_info(si.si_signo, &si, current);
+        } else {
                 /*
                  * We're about to disable the alignment trap and return to
                  * user space.  But if an interrupt occurs before actually
@@ -926,20 +961,11 @@ static int __init alignment_init(void)
                 return -ENOMEM;
 #endif
 
-        /*
-         * ARMv6 and later CPUs can perform unaligned accesses for
-         * most single load and store instructions up to word size.
-         * LDM, STM, LDRD and STRD still need to be handled.
-         *
-         * Ignoring the alignment fault is not an option on these
-         * CPUs since we spin re-faulting the instruction without
-         * making any progress.
-         */
-        if (cpu_architecture() >= CPU_ARCH_ARMv6 && (cr_alignment & CR_U)) {
+        if (cpu_is_v6_unaligned()) {
                 cr_alignment &= ~CR_A;
                 cr_no_alignment &= ~CR_A;
                 set_cr(cr_alignment);
-                ai_usermode = UM_FIXUP;
+                ai_usermode = safe_usermode(ai_usermode, false);
         }
 
         hook_fault_code(1, do_alignment, SIGBUS, BUS_ADRALN,
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 2fee782077c..91bca355cd3 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -441,7 +441,7 @@ static inline int free_area(unsigned long pfn, unsigned long end, char *s)
 static inline void poison_init_mem(void *s, size_t count)
 {
         u32 *p = (u32 *)s;
-        while ((count = count - 4))
+        for (; count != 0; count -= 4)
                 *p++ = 0xe7fddef0;
 }
 
diff --git a/arch/arm/mm/proc-arm946.S b/arch/arm/mm/proc-arm946.S
index f8f7ea34bfc..683af3a182b 100644
--- a/arch/arm/mm/proc-arm946.S
+++ b/arch/arm/mm/proc-arm946.S
@@ -410,6 +410,7 @@ __arm946_proc_info:
         .long   0x41009460
         .long   0xff00fff0
         .long   0
+        .long   0
         b       __arm946_setup
         .long   cpu_arch_name
         .long   cpu_elf_name
@@ -418,6 +419,6 @@ __arm946_proc_info:
         .long   arm946_processor_functions
         .long   0
         .long   0
-        .long   arm940_cache_fns
+        .long   arm946_cache_fns
         .size   __arm946_proc_info, . - __arm946_proc_info
 
diff --git a/arch/powerpc/include/asm/jump_label.h b/arch/powerpc/include/asm/jump_label.h
index 1f780b95c0f..938986e412f 100644
--- a/arch/powerpc/include/asm/jump_label.h
+++ b/arch/powerpc/include/asm/jump_label.h
@@ -22,7 +22,6 @@ static __always_inline bool arch_static_branch(struct jump_label_key *key)
         asm goto("1:\n\t"
                  "nop\n\t"
                  ".pushsection __jump_table,  \"aw\"\n\t"
-                 ".align 4\n\t"
                  JUMP_ENTRY_TYPE "1b, %l[l_yes], %c0\n\t"
                  ".popsection \n\t"
                  : :  "i" (key) : : l_yes);
@@ -41,7 +40,6 @@ struct jump_entry {
         jump_label_t code;
         jump_label_t target;
         jump_label_t key;
-        jump_label_t pad;
 };
 
 #endif /* _ASM_POWERPC_JUMP_LABEL_H */
diff --git a/arch/powerpc/include/asm/kdump.h b/arch/powerpc/include/asm/kdump.h
index 6857af58b02..bffd062adf7 100644
--- a/arch/powerpc/include/asm/kdump.h
+++ b/arch/powerpc/include/asm/kdump.h
@@ -3,17 +3,7 @@
 
 #include <asm/page.h>
 
-/*
- * If CONFIG_RELOCATABLE is enabled we can place the kdump kernel anywhere.
- * To keep enough space in the RMO for the first stage kernel on 64bit, we
- * place it at 64MB. If CONFIG_RELOCATABLE is not enabled we must place
- * the second stage at 32MB.
- */
-#if defined(CONFIG_RELOCATABLE) && defined(CONFIG_PPC64)
-#define KDUMP_KERNELBASE        0x4000000
-#else
 #define KDUMP_KERNELBASE        0x2000000
-#endif
 
 /* How many bytes to reserve at zero for kdump. The reserve limit should
  * be greater or equal to the trampoline's end address.
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index e8aaf6fce38..559da199edb 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -1003,7 +1003,6 @@
 #define PV_970          0x0039
 #define PV_POWER5       0x003A
 #define PV_POWER5p      0x003B
-#define PV_POWER7       0x003F
 #define PV_970FX        0x003C
 #define PV_POWER6       0x003E
 #define PV_POWER7       0x003F
@@ -1024,13 +1023,16 @@
 #define mtmsrd(v)       __mtmsrd((v), 0)
 #define mtmsr(v)        mtmsrd(v)
 #else
-#define mtmsr(v)        asm volatile("mtmsr %0" : : "r" (v) : "memory")
+#define mtmsr(v)        asm volatile("mtmsr %0" : \
+                                     : "r" ((unsigned long)(v)) \
+                                     : "memory")
 #endif
 
 #define mfspr(rn)       ({unsigned long rval; \
                         asm volatile("mfspr %0," __stringify(rn) \
                                 : "=r" (rval)); rval;})
-#define mtspr(rn, v)    asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v)\
+#define mtspr(rn, v)    asm volatile("mtspr " __stringify(rn) ",%0" : \
+                                     : "r" ((unsigned long)(v)) \
                                      : "memory")
 
 #ifdef __powerpc64__
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 9fb933248ab..fa44ff53886 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -2051,7 +2051,8 @@ static struct cpu_spec __initdata cpu_specs[] = {
 
 static struct cpu_spec the_cpu_spec;
 
-static void __init setup_cpu_spec(unsigned long offset, struct cpu_spec *s)
+static struct cpu_spec * __init setup_cpu_spec(unsigned long offset,
+                                               struct cpu_spec *s)
 {
         struct cpu_spec *t = &the_cpu_spec;
         struct cpu_spec old;
@@ -2114,6 +2115,8 @@ static void __init setup_cpu_spec(unsigned long offset, struct cpu_spec *s)
                 t->cpu_setup(offset, t);
         }
 #endif /* CONFIG_PPC64 || CONFIG_BOOKE */
+
+        return t;
 }
 
 struct cpu_spec * __init identify_cpu(unsigned long offset, unsigned int pvr)
@@ -2124,10 +2127,8 @@ struct cpu_spec * __init identify_cpu(unsigned long offset, unsigned int pvr)
         s = PTRRELOC(s);
 
         for (i = 0; i < ARRAY_SIZE(cpu_specs); i++,s++) {
-                if ((pvr & s->pvr_mask) == s->pvr_value) {
-                        setup_cpu_spec(offset, s);
-                        return s;
-                }
+                if ((pvr & s->pvr_mask) == s->pvr_value)
+                        return setup_cpu_spec(offset, s);
         }
 
         BUG();
diff --git a/arch/powerpc/kernel/iomap.c b/arch/powerpc/kernel/iomap.c
index 1577434f408..b25f6325fc7 100644
--- a/arch/powerpc/kernel/iomap.c
+++ b/arch/powerpc/kernel/iomap.c
@@ -117,6 +117,7 @@ void ioport_unmap(void __iomem *addr)
 EXPORT_SYMBOL(ioport_map);
 EXPORT_SYMBOL(ioport_unmap);
 
+#ifdef CONFIG_PCI
 void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
 {
         resource_size_t start = pci_resource_start(dev, bar);
@@ -146,3 +147,4 @@ void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
 
 EXPORT_SYMBOL(pci_iomap);
 EXPORT_SYMBOL(pci_iounmap);
+#endif /* CONFIG_PCI */
diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c
index 6658a158995..9ce1672afb5 100644
--- a/arch/powerpc/kernel/machine_kexec.c
+++ b/arch/powerpc/kernel/machine_kexec.c
@@ -136,12 +136,16 @@ void __init reserve_crashkernel(void)
         crashk_res.start = KDUMP_KERNELBASE;
 #else
         if (!crashk_res.start) {
+#ifdef CONFIG_PPC64
                 /*
-                 * unspecified address, choose a region of specified size
-                 * can overlap with initrd (ignoring corruption when retained)
-                 * ppc64 requires kernel and some stacks to be in first segemnt
+                 * On 64bit we split the RMO in half but cap it at half of
+                 * a small SLB (128MB) since the crash kernel needs to place
+                 * itself and some stacks to be in the first segment.
                  */
+                crashk_res.start = min(0x80000000ULL, (ppc64_rma_size / 2));
+#else
                 crashk_res.start = KDUMP_KERNELBASE;
+#endif
         }
 
         crash_base = PAGE_ALIGN(crashk_res.start);
diff --git a/arch/powerpc/kernel/perf_callchain.c b/arch/powerpc/kernel/perf_callchain.c
index d05ae4204bb..564c1d8bdb5 100644
--- a/arch/powerpc/kernel/perf_callchain.c
+++ b/arch/powerpc/kernel/perf_callchain.c
@@ -154,8 +154,12 @@ static int read_user_stack_64(unsigned long __user *ptr, unsigned long *ret)
             ((unsigned long)ptr & 7))
                 return -EFAULT;
 
-        if (!__get_user_inatomic(*ret, ptr))
+        pagefault_disable();
+        if (!__get_user_inatomic(*ret, ptr)) {
+                pagefault_enable();
                 return 0;
+        }
+        pagefault_enable();
 
         return read_user_stack_slow(ptr, ret, 8);
 }
@@ -166,8 +170,12 @@ static int read_user_stack_32(unsigned int __user *ptr, unsigned int *ret)
             ((unsigned long)ptr & 3))
                 return -EFAULT;
 
-        if (!__get_user_inatomic(*ret, ptr))
+        pagefault_disable();
+        if (!__get_user_inatomic(*ret, ptr)) {
+                pagefault_enable();
                 return 0;
+        }
+        pagefault_enable();
 
         return read_user_stack_slow(ptr, ret, 4);
 }
@@ -294,11 +302,17 @@ static inline int current_is_64bit(void)
  */
 static int read_user_stack_32(unsigned int __user *ptr, unsigned int *ret)
 {
+        int rc;
+
         if ((unsigned long)ptr > TASK_SIZE - sizeof(unsigned int) ||
             ((unsigned long)ptr & 3))
                 return -EFAULT;
 
-        return __get_user_inatomic(*ret, ptr);
+        pagefault_disable();
+        rc = __get_user_inatomic(*ret, ptr);
+        pagefault_enable();
+
+        return rc;
 }
 
 static inline void perf_callchain_user_64(struct perf_callchain_entry *entry,
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index c016033ba78..a909f4e9343 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -1020,7 +1020,7 @@ static unsigned long __init alloc_up(unsigned long size, unsigned long align)
         }
         if (addr == 0)
                 return 0;
-        RELOC(alloc_bottom) = addr;
+        RELOC(alloc_bottom) = addr + size;
 
         prom_debug(" -> %x\n", addr);
         prom_debug("  alloc_bottom : %x\n", RELOC(alloc_bottom));
@@ -1830,11 +1830,13 @@ static void __init *make_room(unsigned long *mem_start, unsigned long *mem_end,
                 if (room > DEVTREE_CHUNK_SIZE)
                         room = DEVTREE_CHUNK_SIZE;
                 if (room < PAGE_SIZE)
-                        prom_panic("No memory for flatten_device_tree (no room)");
+                        prom_panic("No memory for flatten_device_tree "
+                                   "(no room)\n");
                 chunk = alloc_up(room, 0);
                 if (chunk == 0)
-                        prom_panic("No memory for flatten_device_tree (claim failed)");
-                *mem_end = RELOC(alloc_top);
+                        prom_panic("No memory for flatten_device_tree "
+                                   "(claim failed)\n");
+                *mem_end = chunk + room;
         }
 
         ret = (void *)*mem_start;
@@ -2042,7 +2044,7 @@ static void __init flatten_device_tree(void)
 
         /*
          * Check how much room we have between alloc top & bottom (+/- a
-         * few pages), crop to 4Mb, as this is our "chuck" size
+         * few pages), crop to 1MB, as this is our "chunk" size
          */
         room = RELOC(alloc_top) - RELOC(alloc_bottom) - 0x4000;
         if (room > DEVTREE_CHUNK_SIZE)
@@ -2053,7 +2055,7 @@ static void __init flatten_device_tree(void)
         mem_start = (unsigned long)alloc_up(room, PAGE_SIZE);
         if (mem_start == 0)
                 prom_panic("Can't allocate initial device-tree chunk\n");
-        mem_end = RELOC(alloc_top);
+        mem_end = mem_start + room;
 
         /* Get root of tree */
         root = call_prom("peer", 1, 1, (phandle)0);
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index 6dd33581a22..de2950135e6 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -1251,7 +1251,7 @@ BEGIN_FTR_SECTION
         reg = 0
         .rept   32
         li      r6,reg*16+VCPU_VSRS
-        stxvd2x reg,r6,r3
+        STXVD2X(reg,r6,r3)
         reg = reg + 1
         .endr
 FTR_SECTION_ELSE
@@ -1313,7 +1313,7 @@ BEGIN_FTR_SECTION
         reg = 0
         .rept   32
         li      r7,reg*16+VCPU_VSRS
-        lxvd2x  reg,r7,r4
+        LXVD2X(reg,r7,r4)
         reg = reg + 1
         .endr
 FTR_SECTION_ELSE
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index d0af7fb2f34..b9ba86191ae 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -24,7 +24,7 @@ source "arch/powerpc/platforms/wsp/Kconfig"
 
 config KVM_GUEST
         bool "KVM Guest support"
-        default y
+        default n
         ---help---
           This option enables various optimizations for running under the KVM
           hypervisor. Overhead for the kernel when not running inside KVM should
diff --git a/arch/powerpc/platforms/pseries/dtl.c b/arch/powerpc/platforms/pseries/dtl.c
index e9190073bb9..0e865637006 100644
--- a/arch/powerpc/platforms/pseries/dtl.c
+++ b/arch/powerpc/platforms/pseries/dtl.c
@@ -181,7 +181,7 @@ static void dtl_stop(struct dtl *dtl)
 
         lppaca_of(dtl->cpu).dtl_enable_mask = 0x0;
 
-        unregister_dtl(hwcpu, __pa(dtl->buf));
+        unregister_dtl(hwcpu);
 }
 
 static u64 dtl_current_index(struct dtl *dtl)
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index bc0288501f1..83a3ca2fd28 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -135,7 +135,7 @@ static void pseries_mach_cpu_die(void)
                 get_lppaca()->idle = 0;
 
                 if (get_preferred_offline_state(cpu) == CPU_STATE_ONLINE) {
-                        unregister_slb_shadow(hwcpu, __pa(get_slb_shadow()));
+                        unregister_slb_shadow(hwcpu);
 
                         /*
                          * Call to start_secondary_resume() will not return.
@@ -150,7 +150,7 @@ static void pseries_mach_cpu_die(void)
         WARN_ON(get_preferred_offline_state(cpu) != CPU_STATE_OFFLINE);
 
         set_cpu_current_state(cpu, CPU_STATE_OFFLINE);
-        unregister_slb_shadow(hwcpu, __pa(get_slb_shadow()));
+        unregister_slb_shadow(hwcpu);
         rtas_stop_self();
 
         /* Should never get here... */
diff --git a/arch/powerpc/platforms/pseries/io_event_irq.c b/arch/powerpc/platforms/pseries/io_event_irq.c
index c829e6067d5..2c4dd1fb833 100644
--- a/arch/powerpc/platforms/pseries/io_event_irq.c
+++ b/arch/powerpc/platforms/pseries/io_event_irq.c
@@ -212,17 +212,15 @@ static int __init ioei_init(void)
         struct device_node *np;
 
         ioei_check_exception_token = rtas_token("check-exception");
-        if (ioei_check_exception_token == RTAS_UNKNOWN_SERVICE) {
-                pr_warning("IO Event IRQ not supported on this system !\n");
+        if (ioei_check_exception_token == RTAS_UNKNOWN_SERVICE)
                 return -ENODEV;
-        }
+
         np = of_find_node_by_path("/event-sources/ibm,io-events");
         if (np) {
                 request_event_sources_irqs(np, ioei_interrupt, "IO_EVENT");
+                pr_info("IBM I/O event interrupts enabled\n");
                 of_node_put(np);
         } else {
-                pr_err("io_event_irq: No ibm,io-events on system! "
-                       "IO Event interrupt disabled.\n");
                 return -ENODEV;
         }
         return 0;
diff --git a/arch/powerpc/platforms/pseries/kexec.c b/arch/powerpc/platforms/pseries/kexec.c
index 54cf3a4aa16..7d94bdc63d5 100644
--- a/arch/powerpc/platforms/pseries/kexec.c
+++ b/arch/powerpc/platforms/pseries/kexec.c
@@ -25,20 +25,30 @@ static void pseries_kexec_cpu_down(int crash_shutdown, int secondary)
 {
         /* Don't risk a hypervisor call if we're crashing */
         if (firmware_has_feature(FW_FEATURE_SPLPAR) && !crash_shutdown) {
-                unsigned long addr;
+                int ret;
+                int cpu = smp_processor_id();
+                int hwcpu = hard_smp_processor_id();
 
-                addr = __pa(get_slb_shadow());
-                if (unregister_slb_shadow(hard_smp_processor_id(), addr))
-                        printk("SLB shadow buffer deregistration of "
-                               "cpu %u (hw_cpu_id %d) failed\n",
-                               smp_processor_id(),
-                               hard_smp_processor_id());
+                if (get_lppaca()->dtl_enable_mask) {
+                        ret = unregister_dtl(hwcpu);
+                        if (ret) {
+                                pr_err("WARNING: DTL deregistration for cpu "
+                                       "%d (hw %d) failed with %d\n",
+                                       cpu, hwcpu, ret);
+                        }
+                }
+
+                ret = unregister_slb_shadow(hwcpu);
+                if (ret) {
+                        pr_err("WARNING: SLB shadow buffer deregistration "
+                               "for cpu %d (hw %d) failed with %d\n",
+                               cpu, hwcpu, ret);
+                }
 
-                addr = __pa(get_lppaca());
-                if (unregister_vpa(hard_smp_processor_id(), addr)) {
-                        printk("VPA deregistration of cpu %u (hw_cpu_id %d) "
-                                        "failed\n", smp_processor_id(),
-                                        hard_smp_processor_id());
+                ret = unregister_vpa(hwcpu);
+                if (ret) {
+                        pr_err("WARNING: VPA deregistration for cpu %d "
+                               "(hw %d) failed with %d\n", cpu, hwcpu, ret);
                 }
         }
 }
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index f7205d344ef..c9a29dae8c0 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -67,9 +67,8 @@ void vpa_init(int cpu)
         ret = register_vpa(hwcpu, addr);
 
         if (ret) {
-                printk(KERN_ERR "WARNING: vpa_init: VPA registration for "
-                                "cpu %d (hw %d) of area %lx returns %ld\n",
-                                cpu, hwcpu, addr, ret);
+                pr_err("WARNING: VPA registration for cpu %d (hw %d) of area "
+                       "%lx failed with %ld\n", cpu, hwcpu, addr, ret);
                 return;
         }
         /*
@@ -80,10 +79,9 @@ void vpa_init(int cpu)
         if (firmware_has_feature(FW_FEATURE_SPLPAR)) {
                 ret = register_slb_shadow(hwcpu, addr);
                 if (ret)
-                        printk(KERN_ERR
-                               "WARNING: vpa_init: SLB shadow buffer "
-                               "registration for cpu %d (hw %d) of area %lx "
-                               "returns %ld\n", cpu, hwcpu, addr, ret);
+                        pr_err("WARNING: SLB shadow buffer registration for "
+                               "cpu %d (hw %d) of area %lx failed with %ld\n",
+                               cpu, hwcpu, addr, ret);
         }
 
         /*
@@ -100,8 +98,9 @@ void vpa_init(int cpu)
                 dtl->enqueue_to_dispatch_time = DISPATCH_LOG_BYTES;
                 ret = register_dtl(hwcpu, __pa(dtl));
                 if (ret)
-                        pr_warn("DTL registration failed for cpu %d (%ld)\n",
-                                cpu, ret);
+                        pr_err("WARNING: DTL registration of cpu %d (hw %d) "
+                               "failed with %ld\n", smp_processor_id(),
+                               hwcpu, ret);
                 lppaca_of(cpu).dtl_enable_mask = 2;
         }
 }
@@ -204,7 +203,7 @@ static void pSeries_lpar_hptab_clear(void)
                 unsigned long ptel;
         } ptes[4];
         long lpar_rc;
-        int i, j;
+        unsigned long i, j;
 
         /* Read in batches of 4,
          * invalidate only valid entries not in the VRMA
diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h
index 4bf21207d7d..41c24c146d6 100644
--- a/arch/powerpc/platforms/pseries/plpar_wrappers.h
+++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h
@@ -53,9 +53,9 @@ static inline long vpa_call(unsigned long flags, unsigned long cpu,
         return plpar_hcall_norets(H_REGISTER_VPA, flags, cpu, vpa);
 }
 
-static inline long unregister_vpa(unsigned long cpu, unsigned long vpa)
+static inline long unregister_vpa(unsigned long cpu)
 {
-        return vpa_call(0x5, cpu, vpa);
+        return vpa_call(0x5, cpu, 0);
 }
 
 static inline long register_vpa(unsigned long cpu, unsigned long vpa)
@@ -63,9 +63,9 @@ static inline long register_vpa(unsigned long cpu, unsigned long vpa)
         return vpa_call(0x1, cpu, vpa);
 }
 
-static inline long unregister_slb_shadow(unsigned long cpu, unsigned long vpa)
+static inline long unregister_slb_shadow(unsigned long cpu)
 {
-        return vpa_call(0x7, cpu, vpa);
+        return vpa_call(0x7, cpu, 0);
 }
 
 static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa)
@@ -73,9 +73,9 @@ static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa)
         return vpa_call(0x3, cpu, vpa);
 }
 
-static inline long unregister_dtl(unsigned long cpu, unsigned long vpa)
+static inline long unregister_dtl(unsigned long cpu)
 {
-        return vpa_call(0x6, cpu, vpa);
+        return vpa_call(0x6, cpu, 0);
 }
 
 static inline long register_dtl(unsigned long cpu, unsigned long vpa)
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index d00e52926b7..0969fd98c4f 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -324,8 +324,9 @@ static int alloc_dispatch_logs(void)
         dtl->enqueue_to_dispatch_time = DISPATCH_LOG_BYTES;
         ret = register_dtl(hard_smp_processor_id(), __pa(dtl));
         if (ret)
-                pr_warn("DTL registration failed for boot cpu %d (%d)\n",
-                        smp_processor_id(), ret);
+                pr_err("WARNING: DTL registration of cpu %d (hw %d) failed "
+                       "with %d\n", smp_processor_id(),
+                       hard_smp_processor_id(), ret);
         get_paca()->lppaca_ptr->dtl_enable_mask = 2;
 
         return 0;
diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c
index a59ba96d2c2..dbfe96bc878 100644
--- a/arch/powerpc/sysdev/ppc4xx_pci.c
+++ b/arch/powerpc/sysdev/ppc4xx_pci.c
@@ -655,8 +655,6 @@ struct ppc4xx_pciex_hwops
 
 static struct ppc4xx_pciex_hwops *ppc4xx_pciex_hwops;
 
-#ifdef CONFIG_44x
-
 static int __init ppc4xx_pciex_wait_on_sdr(struct ppc4xx_pciex_port *port,
                                            unsigned int sdr_offset,
                                            unsigned int mask,
@@ -688,6 +686,7 @@ static int __init ppc4xx_pciex_port_reset_sdr(struct ppc4xx_pciex_port *port)
         return 0;
 }
 
+
 static void __init ppc4xx_pciex_check_link_sdr(struct ppc4xx_pciex_port *port)
 {
         printk(KERN_INFO "PCIE%d: Checking link...\n", port->index);
@@ -718,6 +717,8 @@ static void __init ppc4xx_pciex_check_link_sdr(struct ppc4xx_pciex_port *port)
                 printk(KERN_INFO "PCIE%d: No device detected.\n", port->index);
 }
 
+#ifdef CONFIG_44x
+
 /* Check various reset bits of the 440SPe PCIe core */
 static int __init ppc440spe_pciex_check_reset(struct device_node *np)
 {
diff --git a/arch/sparc/kernel/ds.c b/arch/sparc/kernel/ds.c
index 490e5418740..7429b47c3ac 100644
--- a/arch/sparc/kernel/ds.c
+++ b/arch/sparc/kernel/ds.c
@@ -1256,13 +1256,14 @@ static int __init ds_init(void)
 {
         unsigned long hv_ret, major, minor;
 
-        hv_ret = sun4v_get_version(HV_GRP_REBOOT_DATA, &major, &minor);
-        if (hv_ret == HV_EOK) {
-                pr_info("SUN4V: Reboot data supported (maj=%lu,min=%lu).\n",
-                        major, minor);
-                reboot_data_supported = 1;
+        if (tlb_type == hypervisor) {
+                hv_ret = sun4v_get_version(HV_GRP_REBOOT_DATA, &major, &minor);
+                if (hv_ret == HV_EOK) {
+                        pr_info("SUN4V: Reboot data supported (maj=%lu,min=%lu).\n",
+                                major, minor);
+                        reboot_data_supported = 1;
+                }
         }
-
         kthread_run(ds_thread, NULL, "kldomd");
 
         return vio_register_driver(&ds_driver);
diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
index 45fbb8f7f54..f88af2c2a56 100644
--- a/arch/x86/kernel/cpu/perf_event_intel.c
+++ b/arch/x86/kernel/cpu/perf_event_intel.c
@@ -1590,6 +1590,7 @@ static __init int intel_pmu_init(void)
                 break;
 
         case 42: /* SandyBridge */
+        case 45: /* SandyBridge, "Romely-EP" */
                 memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
                        sizeof(hw_cache_event_ids));