Merge branch 'linus' into smp/hotplug

Apply upstream changes to avoid conflicts with pending patches.

32 files changed, 235 insertions, 139 deletions

diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index ca254546cd05..1934707bf321 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -66,29 +66,28 @@ endif
 UTS_MACHINE := $(OLDARCH)
 
 ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
-override CC     += -mlittle-endian
-ifneq ($(cc-name),clang)
-override CC     += -mno-strict-align
-endif
-override AS     += -mlittle-endian
 override LD     += -EL
-override CROSS32CC += -mlittle-endian
 override CROSS32AS += -mlittle-endian
 LDEMULATION     := lppc
 GNUTARGET       := powerpcle
 MULTIPLEWORD    := -mno-multiple
 KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-save-toc-indirect)
 else
-ifeq ($(call cc-option-yn,-mbig-endian),y)
-override CC     += -mbig-endian
-override AS     += -mbig-endian
-endif
 override LD     += -EB
 LDEMULATION     := ppc
 GNUTARGET       := powerpc
 MULTIPLEWORD    := -mmultiple
 endif
 
+cflags-$(CONFIG_CPU_BIG_ENDIAN)         += $(call cc-option,-mbig-endian)
+cflags-$(CONFIG_CPU_LITTLE_ENDIAN)      += -mlittle-endian
+ifneq ($(cc-name),clang)
+  cflags-$(CONFIG_CPU_LITTLE_ENDIAN)    += -mno-strict-align
+endif
+
+aflags-$(CONFIG_CPU_BIG_ENDIAN)         += $(call cc-option,-mbig-endian)
+aflags-$(CONFIG_CPU_LITTLE_ENDIAN)      += -mlittle-endian
+
 ifeq ($(HAS_BIARCH),y)
 override AS     += -a$(CONFIG_WORD_SIZE)
 override LD     += -m elf$(CONFIG_WORD_SIZE)$(LDEMULATION)
@@ -232,6 +231,9 @@ cpu-as-$(CONFIG_E200)		+= -Wa,-me200
 KBUILD_AFLAGS += $(cpu-as-y)
 KBUILD_CFLAGS += $(cpu-as-y)
 
+KBUILD_AFLAGS += $(aflags-y)
+KBUILD_CFLAGS += $(cflags-y)
+
 head-y                          := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o
 head-$(CONFIG_8xx)              := arch/powerpc/kernel/head_8xx.o
 head-$(CONFIG_40x)              := arch/powerpc/kernel/head_40x.o
diff --git a/arch/powerpc/crypto/crc32c-vpmsum_glue.c b/arch/powerpc/crypto/crc32c-vpmsum_glue.c
index bfe3d37a24ef..9fa046d56eba 100644
--- a/arch/powerpc/crypto/crc32c-vpmsum_glue.c
+++ b/arch/powerpc/crypto/crc32c-vpmsum_glue.c
@@ -4,6 +4,7 @@
 #include <linux/module.h>
 #include <linux/string.h>
 #include <linux/kernel.h>
+#include <linux/cpufeature.h>
 #include <asm/switch_to.h>
 
 #define CHKSUM_BLOCK_SIZE       1
@@ -157,7 +158,7 @@ static void __exit crc32c_vpmsum_mod_fini(void)
         crypto_unregister_shash(&alg);
 }
 
-module_init(crc32c_vpmsum_mod_init);
+module_cpu_feature_match(PPC_MODULE_FEATURE_VEC_CRYPTO, crc32c_vpmsum_mod_init);
 module_exit(crc32c_vpmsum_mod_fini);
 
 MODULE_AUTHOR("Anton Blanchard <anton@samba.org>");
diff --git a/arch/powerpc/include/asm/cpuidle.h b/arch/powerpc/include/asm/cpuidle.h
index 3d7fc06532a1..01b8a13f0224 100644
--- a/arch/powerpc/include/asm/cpuidle.h
+++ b/arch/powerpc/include/asm/cpuidle.h
@@ -19,4 +19,17 @@ extern u64 pnv_first_deep_stop_state;
 
 #endif
 
+/* Idle state entry routines */
+#ifdef  CONFIG_PPC_P7_NAP
+#define IDLE_STATE_ENTER_SEQ(IDLE_INST)                         \
+        /* Magic NAP/SLEEP/WINKLE mode enter sequence */        \
+        std     r0,0(r1);                                       \
+        ptesync;                                                \
+        ld      r0,0(r1);                                       \
+1:      cmp     cr0,r0,r0;                                      \
+        bne     1b;                                             \
+        IDLE_INST;                                              \
+        b       .
+#endif /* CONFIG_PPC_P7_NAP */
+
 #endif
diff --git a/arch/powerpc/include/asm/feature-fixups.h b/arch/powerpc/include/asm/feature-fixups.h
index 57fec8ac7b92..ddf54f5bbdd1 100644
--- a/arch/powerpc/include/asm/feature-fixups.h
+++ b/arch/powerpc/include/asm/feature-fixups.h
@@ -186,6 +186,7 @@ label##3:					       	\
 
 #ifndef __ASSEMBLY__
 void apply_feature_fixups(void);
+void setup_feature_keys(void);
 #endif
 
 #endif /* __ASM_POWERPC_FEATURE_FIXUPS_H */
diff --git a/arch/powerpc/include/asm/switch_to.h b/arch/powerpc/include/asm/switch_to.h
index 0a74ebe934e1..17c8380673a6 100644
--- a/arch/powerpc/include/asm/switch_to.h
+++ b/arch/powerpc/include/asm/switch_to.h
@@ -75,14 +75,6 @@ static inline void disable_kernel_spe(void)
 static inline void __giveup_spe(struct task_struct *t) { }
 #endif
 
-#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
-extern void flush_tmregs_to_thread(struct task_struct *);
-#else
-static inline void flush_tmregs_to_thread(struct task_struct *t)
-{
-}
-#endif
-
 static inline void clear_task_ebb(struct task_struct *t)
 {
 #ifdef CONFIG_PPC_BOOK3S_64
diff --git a/arch/powerpc/include/asm/xics.h b/arch/powerpc/include/asm/xics.h
index f5f729c11578..f0b238516e9b 100644
--- a/arch/powerpc/include/asm/xics.h
+++ b/arch/powerpc/include/asm/xics.h
@@ -159,6 +159,8 @@ extern void xics_teardown_cpu(void);
 extern void xics_kexec_teardown_cpu(int secondary);
 extern void xics_migrate_irqs_away(void);
 extern void icp_native_eoi(struct irq_data *d);
+extern int xics_set_irq_type(struct irq_data *d, unsigned int flow_type);
+extern int xics_retrigger(struct irq_data *data);
 #ifdef CONFIG_SMP
 extern int xics_get_irq_server(unsigned int virq, const struct cpumask *cpumask,
                                unsigned int strict_check);
diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
index c9bc78e9c610..7429556eb8df 100644
--- a/arch/powerpc/kernel/eeh.c
+++ b/arch/powerpc/kernel/eeh.c
@@ -168,10 +168,10 @@ static size_t eeh_dump_dev_log(struct eeh_dev *edev, char *buf, size_t len)
         int n = 0, l = 0;
         char buffer[128];
 
-        n += scnprintf(buf+n, len-n, "%04x:%02x:%02x:%01x\n",
+        n += scnprintf(buf+n, len-n, "%04x:%02x:%02x.%01x\n",
                        edev->phb->global_number, pdn->busno,
                        PCI_SLOT(pdn->devfn), PCI_FUNC(pdn->devfn));
-        pr_warn("EEH: of node=%04x:%02x:%02x:%01x\n",
+        pr_warn("EEH: of node=%04x:%02x:%02x.%01x\n",
                 edev->phb->global_number, pdn->busno,
                 PCI_SLOT(pdn->devfn), PCI_FUNC(pdn->devfn));
 
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 41091fdf9bd8..df6d45eb4115 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -144,29 +144,14 @@ machine_check_pSeries_1:
          * vector
          */
         SET_SCRATCH0(r13)               /* save r13 */
-#ifdef CONFIG_PPC_P7_NAP
-BEGIN_FTR_SECTION
-        /* Running native on arch 2.06 or later, check if we are
-         * waking up from nap. We only handle no state loss and
-         * supervisor state loss. We do -not- handle hypervisor
-         * state loss at this time.
+        /*
+         * Running native on arch 2.06 or later, we may wakeup from winkle
+         * inside machine check. If yes, then last bit of HSPGR0 would be set
+         * to 1. Hence clear it unconditionally.
          */
-        mfspr   r13,SPRN_SRR1
-        rlwinm. r13,r13,47-31,30,31
-        OPT_GET_SPR(r13, SPRN_CFAR, CPU_FTR_CFAR)
-        beq     9f
-
-        mfspr   r13,SPRN_SRR1
-        rlwinm. r13,r13,47-31,30,31
-        /* waking up from powersave (nap) state */
-        cmpwi   cr1,r13,2
-        /* Total loss of HV state is fatal. let's just stay stuck here */
-        OPT_GET_SPR(r13, SPRN_CFAR, CPU_FTR_CFAR)
-        bgt     cr1,.
-9:
-        OPT_SET_SPR(r13, SPRN_CFAR, CPU_FTR_CFAR)
-END_FTR_SECTION_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
-#endif /* CONFIG_PPC_P7_NAP */
+        GET_PACA(r13)
+        clrrdi  r13,r13,1
+        SET_PACA(r13)
         EXCEPTION_PROLOG_0(PACA_EXMC)
 BEGIN_FTR_SECTION
         b       machine_check_powernv_early
@@ -1273,25 +1258,51 @@ machine_check_handle_early:
          * Check if thread was in power saving mode. We come here when any
          * of the following is true:
          * a. thread wasn't in power saving mode
-         * b. thread was in power saving mode with no state loss or
-         *    supervisor state loss
+         * b. thread was in power saving mode with no state loss,
+         *    supervisor state loss or hypervisor state loss.
          *
-         * Go back to nap again if (b) is true.
+         * Go back to nap/sleep/winkle mode again if (b) is true.
          */
         rlwinm. r11,r12,47-31,30,31     /* Was it in power saving mode? */
         beq     4f                      /* No, it wasn;t */
         /* Thread was in power saving mode. Go back to nap again. */
         cmpwi   r11,2
-        bne     3f
-        /* Supervisor state loss */
+        blt     3f
+        /* Supervisor/Hypervisor state loss */
         li      r0,1
         stb     r0,PACA_NAPSTATELOST(r13)
 3:      bl      machine_check_queue_event
         MACHINE_CHECK_HANDLER_WINDUP
         GET_PACA(r13)
         ld      r1,PACAR1(r13)
-        li      r3,PNV_THREAD_NAP
-        b       pnv_enter_arch207_idle_mode
+        /*
+         * Check what idle state this CPU was in and go back to same mode
+         * again.
+         */
+        lbz     r3,PACA_THREAD_IDLE_STATE(r13)
+        cmpwi   r3,PNV_THREAD_NAP
+        bgt     10f
+        IDLE_STATE_ENTER_SEQ(PPC_NAP)
+        /* No return */
+10:
+        cmpwi   r3,PNV_THREAD_SLEEP
+        bgt     2f
+        IDLE_STATE_ENTER_SEQ(PPC_SLEEP)
+        /* No return */
+
+2:
+        /*
+         * Go back to winkle. Please note that this thread was woken up in
+         * machine check from winkle and have not restored the per-subcore
+         * state. Hence before going back to winkle, set last bit of HSPGR0
+         * to 1. This will make sure that if this thread gets woken up
+         * again at reset vector 0x100 then it will get chance to restore
+         * the subcore state.
+         */
+        ori     r13,r13,1
+        SET_PACA(r13)
+        IDLE_STATE_ENTER_SEQ(PPC_WINKLE)
+        /* No return */
 4:
 #endif
         /*
diff --git a/arch/powerpc/kernel/idle_book3s.S b/arch/powerpc/kernel/idle_book3s.S
index ba79d15f4ddd..2265c6398a17 100644
--- a/arch/powerpc/kernel/idle_book3s.S
+++ b/arch/powerpc/kernel/idle_book3s.S
@@ -44,18 +44,6 @@
                                 PSSCR_PSLL_MASK | PSSCR_TR_MASK | \
                                 PSSCR_MTL_MASK
 
-/* Idle state entry routines */
-
-#define IDLE_STATE_ENTER_SEQ(IDLE_INST)                         \
-        /* Magic NAP/SLEEP/WINKLE mode enter sequence */        \
-        std     r0,0(r1);                                       \
-        ptesync;                                                \
-        ld      r0,0(r1);                                       \
-1:      cmp     cr0,r0,r0;                                      \
-        bne     1b;                                             \
-        IDLE_INST;                                              \
-        b       .
-
         .text
 
 /*
@@ -363,8 +351,8 @@ _GLOBAL(power9_idle_stop)
  * cr3 - set to gt if waking up with partial/complete hypervisor state loss
  */
 _GLOBAL(pnv_restore_hyp_resource)
-        ld      r2,PACATOC(r13);
 BEGIN_FTR_SECTION
+        ld      r2,PACATOC(r13);
         /*
          * POWER ISA 3. Use PSSCR to determine if we
          * are waking up from deep idle state
@@ -395,6 +383,9 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_300)
          */
         clrldi  r5,r13,63
         clrrdi  r13,r13,1
+
+        /* Now that we are sure r13 is corrected, load TOC */
+        ld      r2,PACATOC(r13);
         cmpwi   cr4,r5,1
         mtspr   SPRN_HSPRG0,r13
 
diff --git a/arch/powerpc/kernel/mce.c b/arch/powerpc/kernel/mce.c
index ef267fd9dd22..5e7ece0fda9f 100644
--- a/arch/powerpc/kernel/mce.c
+++ b/arch/powerpc/kernel/mce.c
@@ -92,7 +92,8 @@ void save_mce_event(struct pt_regs *regs, long handled,
         mce->in_use = 1;
 
         mce->initiator = MCE_INITIATOR_CPU;
-        if (handled)
+        /* Mark it recovered if we have handled it and MSR(RI=1). */
+        if (handled && (regs->msr & MSR_RI))
                 mce->disposition = MCE_DISPOSITION_RECOVERED;
         else
                 mce->disposition = MCE_DISPOSITION_NOT_RECOVERED;
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index a5c0153ede37..7fdf324d5b51 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -78,6 +78,7 @@ EXPORT_SYMBOL(get_pci_dma_ops);
 static int get_phb_number(struct device_node *dn)
 {
         int ret, phb_id = -1;
+        u32 prop_32;
         u64 prop;
 
         /*
@@ -86,8 +87,10 @@ static int get_phb_number(struct device_node *dn)
          * reading "ibm,opal-phbid", only present in OPAL environment.
          */
         ret = of_property_read_u64(dn, "ibm,opal-phbid", &prop);
-        if (ret)
-                ret = of_property_read_u32_index(dn, "reg", 1, (u32 *)&prop);
+        if (ret) {
+                ret = of_property_read_u32_index(dn, "reg", 1, &prop_32);
+                prop = prop_32;
+        }
 
         if (!ret)
                 phb_id = (int)(prop & (MAX_PHBS - 1));
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 58ccf86415b4..9ee2623e0f67 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1074,26 +1074,6 @@ static inline void restore_sprs(struct thread_struct *old_thread,
 #endif
 }
 
-#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
-void flush_tmregs_to_thread(struct task_struct *tsk)
-{
-        /*
-         * Process self tracing is not yet supported through
-         * ptrace interface. Ptrace generic code should have
-         * prevented this from happening in the first place.
-         * Warn once here with the message, if some how it
-         * is attempted.
-         */
-        WARN_ONCE(tsk == current,
-                "Not expecting ptrace on self: TM regs may be incorrect\n");
-
-        /*
-         * If task is not current, it should have been flushed
-         * already to it's thread_struct during __switch_to().
-         */
-}
-#endif
-
 struct task_struct *__switch_to(struct task_struct *prev,
         struct task_struct *new)
 {
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 6ee4b72cda42..4e74fc588a3f 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -2940,7 +2940,7 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4,
 
         /* Don't print anything after quiesce under OPAL, it crashes OFW */
         if (of_platform != PLATFORM_OPAL) {
-                prom_printf("Booting Linux via __start() ...\n");
+                prom_printf("Booting Linux via __start() @ 0x%lx ...\n", kbase);
                 prom_debug("->dt_header_start=0x%x\n", hdr);
         }
 
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 4f3c5756cc09..bf91658a8a40 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -38,6 +38,7 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/switch_to.h>
+#include <asm/tm.h>
 
 #define CREATE_TRACE_POINTS
 #include <trace/events/syscalls.h>
@@ -118,6 +119,24 @@ static const struct pt_regs_offset regoffset_table[] = {
         REG_OFFSET_END,
 };
 
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+static void flush_tmregs_to_thread(struct task_struct *tsk)
+{
+        /*
+         * If task is not current, it will have been flushed already to
+         * it's thread_struct during __switch_to().
+         *
+         * A reclaim flushes ALL the state.
+         */
+
+        if (tsk == current && MSR_TM_SUSPENDED(mfmsr()))
+                tm_reclaim_current(TM_CAUSE_SIGNAL);
+
+}
+#else
+static inline void flush_tmregs_to_thread(struct task_struct *tsk) { }
+#endif
+
 /**
  * regs_query_register_offset() - query register offset from its name
  * @name:       the name of a register
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index c3e861df4b20..24ec3ea4b3a2 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -93,15 +93,16 @@ notrace unsigned long __init early_init(unsigned long dt_ptr)
  * and we are running with enough of the MMU enabled to have our
  * proper kernel virtual addresses
  *
- * Find out what kind of machine we're on and save any data we need
- * from the early boot process (devtree is copied on pmac by prom_init()).
- * This is called very early on the boot process, after a minimal
- * MMU environment has been set up but before MMU_init is called.
+ * We do the initial parsing of the flat device-tree and prepares
+ * for the MMU to be fully initialized.
  */
 extern unsigned int memset_nocache_branch; /* Insn to be replaced by NOP */
 
 notrace void __init machine_init(u64 dt_ptr)
 {
+        /* Configure static keys first, now that we're relocated. */
+        setup_feature_keys();
+
         /* Enable early debugging if any specified (see udbg.h) */
         udbg_early_init();
 
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index eafb9a79e011..7ac8e6eaab5b 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -300,6 +300,7 @@ void __init early_setup(unsigned long dt_ptr)
 
         /* Apply all the dynamic patching */
         apply_feature_fixups();
+        setup_feature_keys();
 
         /* Initialize the hash table or TLB handling */
         early_init_mmu();
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index 6767605ea8da..4111d30badfa 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -22,6 +22,7 @@
 #include <linux/security.h>
 #include <linux/memblock.h>
 
+#include <asm/cpu_has_feature.h>
 #include <asm/pgtable.h>
 #include <asm/processor.h>
 #include <asm/mmu.h>
diff --git a/arch/powerpc/kernel/vdso32/Makefile b/arch/powerpc/kernel/vdso32/Makefile
index cbabd143acae..78a7449bf489 100644
--- a/arch/powerpc/kernel/vdso32/Makefile
+++ b/arch/powerpc/kernel/vdso32/Makefile
@@ -30,7 +30,7 @@ CPPFLAGS_vdso32.lds += -P -C -Upowerpc
 $(obj)/vdso32_wrapper.o : $(obj)/vdso32.so
 
 # link rule for the .so file, .lds has to be first
-$(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32)
+$(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) FORCE
         $(call if_changed,vdso32ld)
 
 # strip rule for the .so file
@@ -39,12 +39,12 @@ $(obj)/%.so: $(obj)/%.so.dbg FORCE
         $(call if_changed,objcopy)
 
 # assembly rules for the .S files
-$(obj-vdso32): %.o: %.S
+$(obj-vdso32): %.o: %.S FORCE
         $(call if_changed_dep,vdso32as)
 
 # actual build commands
 quiet_cmd_vdso32ld = VDSO32L $@
-      cmd_vdso32ld = $(CROSS32CC) $(c_flags) -Wl,-T $^ -o $@
+      cmd_vdso32ld = $(CROSS32CC) $(c_flags) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^)
 quiet_cmd_vdso32as = VDSO32A $@
       cmd_vdso32as = $(CROSS32CC) $(a_flags) -c -o $@ $<
 
diff --git a/arch/powerpc/kernel/vdso64/Makefile b/arch/powerpc/kernel/vdso64/Makefile
index c710802b8fb6..366ae09b14c1 100644
--- a/arch/powerpc/kernel/vdso64/Makefile
+++ b/arch/powerpc/kernel/vdso64/Makefile
@@ -23,7 +23,7 @@ CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)
 $(obj)/vdso64_wrapper.o : $(obj)/vdso64.so
 
 # link rule for the .so file, .lds has to be first
-$(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64)
+$(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) FORCE
         $(call if_changed,vdso64ld)
 
 # strip rule for the .so file
@@ -32,12 +32,12 @@ $(obj)/%.so: $(obj)/%.so.dbg FORCE
         $(call if_changed,objcopy)
 
 # assembly rules for the .S files
-$(obj-vdso64): %.o: %.S
+$(obj-vdso64): %.o: %.S FORCE
         $(call if_changed_dep,vdso64as)
 
 # actual build commands
 quiet_cmd_vdso64ld = VDSO64L $@
-      cmd_vdso64ld = $(CC) $(c_flags) -Wl,-T $^ -o $@
+      cmd_vdso64ld = $(CC) $(c_flags) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^)
 quiet_cmd_vdso64as = VDSO64A $@
       cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $<
 
diff --git a/arch/powerpc/kvm/book3s_xics.c b/arch/powerpc/kvm/book3s_xics.c
index a75ba38a2d81..05aa11399a78 100644
--- a/arch/powerpc/kvm/book3s_xics.c
+++ b/arch/powerpc/kvm/book3s_xics.c
@@ -1329,20 +1329,16 @@ static int kvmppc_xics_create(struct kvm_device *dev, u32 type)
         xics->kvm = kvm;
 
         /* Already there ? */
-        mutex_lock(&kvm->lock);
         if (kvm->arch.xics)
                 ret = -EEXIST;
         else
                 kvm->arch.xics = xics;
-        mutex_unlock(&kvm->lock);
 
         if (ret) {
                 kfree(xics);
                 return ret;
         }
 
-        xics_debugfs_init(xics);
-
 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
         if (cpu_has_feature(CPU_FTR_ARCH_206)) {
                 /* Enable real mode support */
@@ -1354,9 +1350,17 @@ static int kvmppc_xics_create(struct kvm_device *dev, u32 type)
         return 0;
 }
 
+static void kvmppc_xics_init(struct kvm_device *dev)
+{
+        struct kvmppc_xics *xics = (struct kvmppc_xics *)dev->private;
+
+        xics_debugfs_init(xics);
+}
+
 struct kvm_device_ops kvm_xics_ops = {
         .name = "kvm-xics",
         .create = kvmppc_xics_create,
+        .init = kvmppc_xics_init,
         .destroy = kvmppc_xics_free,
         .set_attr = xics_set_attr,
         .get_attr = xics_get_attr,
diff --git a/arch/powerpc/lib/checksum_32.S b/arch/powerpc/lib/checksum_32.S
index d90870a66b60..0a57fe6d49cc 100644
--- a/arch/powerpc/lib/checksum_32.S
+++ b/arch/powerpc/lib/checksum_32.S
@@ -127,8 +127,9 @@ _GLOBAL(csum_partial_copy_generic)
         stw     r7,12(r1)
         stw     r8,8(r1)
 
-        andi.   r0,r4,1                 /* is destination address even ? */
-        cmplwi  cr7,r0,0
+        rlwinm  r0,r4,3,0x8
+        rlwnm   r6,r6,r0,0,31   /* odd destination address: rotate one byte */
+        cmplwi  cr7,r0,0        /* is destination address even ? */
         addic   r12,r6,0
         addi    r6,r4,-4
         neg     r0,r4
@@ -237,7 +238,7 @@ _GLOBAL(csum_partial_copy_generic)
 66:     addze   r3,r12
         addi    r1,r1,16
         beqlr+  cr7
-        rlwinm  r3,r3,8,0,31    /* swap bytes for odd destination */
+        rlwinm  r3,r3,8,0,31    /* odd destination address: rotate one byte */
         blr
 
 /* read fault */
diff --git a/arch/powerpc/lib/feature-fixups.c b/arch/powerpc/lib/feature-fixups.c
index 74145f02ad41..043415f0bdb1 100644
--- a/arch/powerpc/lib/feature-fixups.c
+++ b/arch/powerpc/lib/feature-fixups.c
@@ -188,7 +188,10 @@ void __init apply_feature_fixups(void)
                           &__start___fw_ftr_fixup, &__stop___fw_ftr_fixup);
 #endif
         do_final_fixups();
+}
 
+void __init setup_feature_keys(void)
+{
         /*
          * Initialise jump label. This causes all the cpu/mmu_has_feature()
          * checks to take on their correct polarity based on the current set of
diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index 5be15cff758d..2975754c65ea 100644
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -496,8 +496,10 @@ spufs_mkgang(struct inode *dir, struct dentry *dentry, umode_t mode)
         gang = alloc_spu_gang();
         SPUFS_I(inode)->i_ctx = NULL;
         SPUFS_I(inode)->i_gang = gang;
-        if (!gang)
+        if (!gang) {
+                ret = -ENOMEM;
                 goto out_iput;
+        }
 
         inode->i_op = &simple_dir_inode_operations;
         inode->i_fop = &simple_dir_operations;
diff --git a/arch/powerpc/platforms/pasemi/iommu.c b/arch/powerpc/platforms/pasemi/iommu.c
index 309d9ccccd50..c61667e8bb06 100644
--- a/arch/powerpc/platforms/pasemi/iommu.c
+++ b/arch/powerpc/platforms/pasemi/iommu.c
@@ -187,6 +187,11 @@ static void pci_dma_dev_setup_pasemi(struct pci_dev *dev)
         if (dev->vendor == 0x1959 && dev->device == 0xa007 &&
             !firmware_has_feature(FW_FEATURE_LPAR)) {
                 dev->dev.archdata.dma_ops = &dma_direct_ops;
+                /*
+                 * Set the coherent DMA mask to prevent the iommu
+                 * being used unnecessarily
+                 */
+                dev->dev.coherent_dma_mask = DMA_BIT_MASK(44);
                 return;
         }
 #endif
diff --git a/arch/powerpc/platforms/powernv/opal-irqchip.c b/arch/powerpc/platforms/powernv/opal-irqchip.c
index e505223b4ec5..ed8bba68a162 100644
--- a/arch/powerpc/platforms/powernv/opal-irqchip.c
+++ b/arch/powerpc/platforms/powernv/opal-irqchip.c
@@ -228,7 +228,8 @@ int __init opal_event_init(void)
                 }
 
                 /* Install interrupt handler */
-                rc = request_irq(virq, opal_interrupt, 0, "opal", NULL);
+                rc = request_irq(virq, opal_interrupt, IRQF_TRIGGER_LOW,
+                                 "opal", NULL);
                 if (rc) {
                         irq_dispose_mapping(virq);
                         pr_warn("Error %d requesting irq %d (0x%x)\n",
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c
index 8b4fc68cebcb..6c9a65b52e63 100644
--- a/arch/powerpc/platforms/powernv/opal.c
+++ b/arch/powerpc/platforms/powernv/opal.c
@@ -399,6 +399,7 @@ static int opal_recover_mce(struct pt_regs *regs,
 
         if (!(regs->msr & MSR_RI)) {
                 /* If MSR_RI isn't set, we cannot recover */
+                pr_err("Machine check interrupt unrecoverable: MSR(RI=0)\n");
                 recovered = 0;
         } else if (evt->disposition == MCE_DISPOSITION_RECOVERED) {
                 /* Platform corrected itself */
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index 6b9528307f62..fd9444f9fb0c 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -111,10 +111,17 @@ static int __init iommu_setup(char *str)
 }
 early_param("iommu", iommu_setup);
 
-static inline bool pnv_pci_is_mem_pref_64(unsigned long flags)
+static inline bool pnv_pci_is_m64(struct pnv_phb *phb, struct resource *r)
 {
-        return ((flags & (IORESOURCE_MEM_64 | IORESOURCE_PREFETCH)) ==
-                (IORESOURCE_MEM_64 | IORESOURCE_PREFETCH));
+        /*
+         * WARNING: We cannot rely on the resource flags. The Linux PCI
+         * allocation code sometimes decides to put a 64-bit prefetchable
+         * BAR in the 32-bit window, so we have to compare the addresses.
+         *
+         * For simplicity we only test resource start.
+         */
+        return (r->start >= phb->ioda.m64_base &&
+                r->start < (phb->ioda.m64_base + phb->ioda.m64_size));
 }
 
 static struct pnv_ioda_pe *pnv_ioda_init_pe(struct pnv_phb *phb, int pe_no)
@@ -229,7 +236,7 @@ static void pnv_ioda_reserve_dev_m64_pe(struct pci_dev *pdev,
         sgsz = phb->ioda.m64_segsize;
         for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
                 r = &pdev->resource[i];
-                if (!r->parent || !pnv_pci_is_mem_pref_64(r->flags))
+                if (!r->parent || !pnv_pci_is_m64(phb, r))
                         continue;
 
                 start = _ALIGN_DOWN(r->start - base, sgsz);
@@ -1877,7 +1884,7 @@ static void pnv_pci_phb3_tce_invalidate(struct pnv_ioda_pe *pe, bool rm,
                                         unsigned shift, unsigned long index,
                                         unsigned long npages)
 {
-        __be64 __iomem *invalidate = pnv_ioda_get_inval_reg(pe->phb, false);
+        __be64 __iomem *invalidate = pnv_ioda_get_inval_reg(pe->phb, rm);
         unsigned long start, end, inc;
 
         /* We'll invalidate DMA address in PE scope */
@@ -2863,7 +2870,7 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev)
                 res = &pdev->resource[i + PCI_IOV_RESOURCES];
                 if (!res->flags || res->parent)
                         continue;
-                if (!pnv_pci_is_mem_pref_64(res->flags)) {
+                if (!pnv_pci_is_m64(phb, res)) {
                         dev_warn(&pdev->dev, "Don't support SR-IOV with"
                                         " non M64 VF BAR%d: %pR. \n",
                                  i, res);
@@ -2958,7 +2965,7 @@ static void pnv_ioda_setup_pe_res(struct pnv_ioda_pe *pe,
                         index++;
                 }
         } else if ((res->flags & IORESOURCE_MEM) &&
-                   !pnv_pci_is_mem_pref_64(res->flags)) {
+                   !pnv_pci_is_m64(phb, res)) {
                 region.start = res->start -
                                phb->hose->mem_offset[0] -
                                phb->ioda.m32_pci_base;
@@ -3083,9 +3090,12 @@ static resource_size_t pnv_pci_window_alignment(struct pci_bus *bus,
                 bridge = bridge->bus->self;
         }
 
-        /* We fail back to M32 if M64 isn't supported */
-        if (phb->ioda.m64_segsize &&
-            pnv_pci_is_mem_pref_64(type))
+        /*
+         * We fall back to M32 if M64 isn't supported. We enforce the M64
+         * alignment for any 64-bit resource, PCIe doesn't care and
+         * bridges only do 64-bit prefetchable anyway.
+         */
+        if (phb->ioda.m64_segsize && (type & IORESOURCE_MEM_64))
                 return phb->ioda.m64_segsize;
         if (type & IORESOURCE_MEM)
                 return phb->ioda.m32_segsize;
@@ -3125,7 +3135,7 @@ static void pnv_pci_fixup_bridge_resources(struct pci_bus *bus,
                 w = NULL;
                 if (r->flags & type & IORESOURCE_IO)
                         w = &hose->io_resource;
-                else if (pnv_pci_is_mem_pref_64(r->flags) &&
+                else if (pnv_pci_is_m64(phb, r) &&
                          (type & IORESOURCE_PREFETCH) &&
                          phb->ioda.m64_segsize)
                         w = &hose->mem_resources[1];
diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
index 43f7beb2902d..76ec104e88be 100644
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -320,19 +320,6 @@ static int dlpar_remove_device_tree_lmb(struct of_drconf_cell *lmb)
         return dlpar_update_device_tree_lmb(lmb);
 }
 
-static struct memory_block *lmb_to_memblock(struct of_drconf_cell *lmb)
-{
-        unsigned long section_nr;
-        struct mem_section *mem_sect;
-        struct memory_block *mem_block;
-
-        section_nr = pfn_to_section_nr(PFN_DOWN(lmb->base_addr));
-        mem_sect = __nr_to_section(section_nr);
-
-        mem_block = find_memory_block(mem_sect);
-        return mem_block;
-}
-
 #ifdef CONFIG_MEMORY_HOTREMOVE
 static int pseries_remove_memblock(unsigned long base, unsigned int memblock_size)
 {
@@ -420,6 +407,19 @@ static bool lmb_is_removable(struct of_drconf_cell *lmb)
 
 static int dlpar_add_lmb(struct of_drconf_cell *);
 
+static struct memory_block *lmb_to_memblock(struct of_drconf_cell *lmb)
+{
+        unsigned long section_nr;
+        struct mem_section *mem_sect;
+        struct memory_block *mem_block;
+
+        section_nr = pfn_to_section_nr(PFN_DOWN(lmb->base_addr));
+        mem_sect = __nr_to_section(section_nr);
+
+        mem_block = find_memory_block(mem_sect);
+        return mem_block;
+}
+
 static int dlpar_remove_lmb(struct of_drconf_cell *lmb)
 {
         struct memory_block *mem_block;
diff --git a/arch/powerpc/sysdev/xics/Kconfig b/arch/powerpc/sysdev/xics/Kconfig
index 0031eda320c3..385e7aa9e273 100644
--- a/arch/powerpc/sysdev/xics/Kconfig
+++ b/arch/powerpc/sysdev/xics/Kconfig
@@ -1,6 +1,7 @@
 config PPC_XICS
        def_bool n
        select PPC_SMP_MUXED_IPI
+       select HARDIRQS_SW_RESEND
 
 config PPC_ICP_NATIVE
        def_bool n
diff --git a/arch/powerpc/sysdev/xics/ics-opal.c b/arch/powerpc/sysdev/xics/ics-opal.c
index 27c936c080a6..1c6bf4b66f56 100644
--- a/arch/powerpc/sysdev/xics/ics-opal.c
+++ b/arch/powerpc/sysdev/xics/ics-opal.c
@@ -156,7 +156,9 @@ static struct irq_chip ics_opal_irq_chip = {
         .irq_mask = ics_opal_mask_irq,
         .irq_unmask = ics_opal_unmask_irq,
         .irq_eoi = NULL, /* Patched at init time */
-        .irq_set_affinity = ics_opal_set_affinity
+        .irq_set_affinity = ics_opal_set_affinity,
+        .irq_set_type = xics_set_irq_type,
+        .irq_retrigger = xics_retrigger,
 };
 
 static int ics_opal_map(struct ics *ics, unsigned int virq);
diff --git a/arch/powerpc/sysdev/xics/ics-rtas.c b/arch/powerpc/sysdev/xics/ics-rtas.c
index 3854dd41558d..78ee5c778ef8 100644
--- a/arch/powerpc/sysdev/xics/ics-rtas.c
+++ b/arch/powerpc/sysdev/xics/ics-rtas.c
@@ -163,7 +163,9 @@ static struct irq_chip ics_rtas_irq_chip = {
         .irq_mask = ics_rtas_mask_irq,
         .irq_unmask = ics_rtas_unmask_irq,
         .irq_eoi = NULL, /* Patched at init time */
-        .irq_set_affinity = ics_rtas_set_affinity
+        .irq_set_affinity = ics_rtas_set_affinity,
+        .irq_set_type = xics_set_irq_type,
+        .irq_retrigger = xics_retrigger,
 };
 
 static int ics_rtas_map(struct ics *ics, unsigned int virq)
diff --git a/arch/powerpc/sysdev/xics/xics-common.c b/arch/powerpc/sysdev/xics/xics-common.c
index a795a5f0301c..9d530f479588 100644
--- a/arch/powerpc/sysdev/xics/xics-common.c
+++ b/arch/powerpc/sysdev/xics/xics-common.c
@@ -328,8 +328,12 @@ static int xics_host_map(struct irq_domain *h, unsigned int virq,
 
         pr_devel("xics: map virq %d, hwirq 0x%lx\n", virq, hw);
 
-        /* They aren't all level sensitive but we just don't really know */
-        irq_set_status_flags(virq, IRQ_LEVEL);
+        /*
+         * Mark interrupts as edge sensitive by default so that resend
+         * actually works. The device-tree parsing will turn the LSIs
+         * back to level.
+         */
+        irq_clear_status_flags(virq, IRQ_LEVEL);
 
         /* Don't call into ICS for IPIs */
         if (hw == XICS_IPI) {
@@ -351,13 +355,54 @@ static int xics_host_xlate(struct irq_domain *h, struct device_node *ct,
                            irq_hw_number_t *out_hwirq, unsigned int *out_flags)
 
 {
-        /* Current xics implementation translates everything
-         * to level. It is not technically right for MSIs but this
-         * is irrelevant at this point. We might get smarter in the future
-         */
         *out_hwirq = intspec[0];
-        *out_flags = IRQ_TYPE_LEVEL_LOW;
 
+        /*
+         * If intsize is at least 2, we look for the type in the second cell,
+         * we assume the LSB indicates a level interrupt.
+         */
+        if (intsize > 1) {
+                if (intspec[1] & 1)
+                        *out_flags = IRQ_TYPE_LEVEL_LOW;
+                else
+                        *out_flags = IRQ_TYPE_EDGE_RISING;
+        } else
+                *out_flags = IRQ_TYPE_LEVEL_LOW;
+
+        return 0;
+}
+
+int xics_set_irq_type(struct irq_data *d, unsigned int flow_type)
+{
+        /*
+         * We only support these. This has really no effect other than setting
+         * the corresponding descriptor bits mind you but those will in turn
+         * affect the resend function when re-enabling an edge interrupt.
+         *
+         * Set set the default to edge as explained in map().
+         */
+        if (flow_type == IRQ_TYPE_DEFAULT || flow_type == IRQ_TYPE_NONE)
+                flow_type = IRQ_TYPE_EDGE_RISING;
+
+        if (flow_type != IRQ_TYPE_EDGE_RISING &&
+            flow_type != IRQ_TYPE_LEVEL_LOW)
+                return -EINVAL;
+
+        irqd_set_trigger_type(d, flow_type);
+
+        return IRQ_SET_MASK_OK_NOCOPY;
+}
+
+int xics_retrigger(struct irq_data *data)
+{
+        /*
+         * We need to push a dummy CPPR when retriggering, since the subsequent
+         * EOI will try to pop it. Passing 0 works, as the function hard codes
+         * the priority value anyway.
+         */
+        xics_push_cppr(0);
+
+        /* Tell the core to do a soft retrigger */
         return 0;
 }