20 files changed, 148 insertions, 94 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index bb2efdd..db93dbc 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -227,7 +227,7 @@ config SMP
 	  If you don't know what to do here, say N.
 
 config NR_CPUS
-	int "Maximum number of CPUs (2-32)"
+	int "Maximum number of CPUs (2-128)"
 	range 2 128
 	depends on SMP
 	default "32" if PPC64
diff --git a/arch/powerpc/configs/cell_defconfig b/arch/powerpc/configs/cell_defconfig
index 4b43341..b657f7e 100644
--- a/arch/powerpc/configs/cell_defconfig
+++ b/arch/powerpc/configs/cell_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.15-rc1
-# Tue Nov 15 14:36:20 2005
+# Linux kernel version: 2.6.15-rc5
+# Tue Dec 20 15:59:26 2005
 #
 CONFIG_PPC64=y
 CONFIG_64BIT=y
@@ -53,6 +53,7 @@ CONFIG_KOBJECT_UEVENT=y
 # CONFIG_IKCONFIG is not set
 # CONFIG_CPUSETS is not set
 CONFIG_INITRAMFS_SOURCE=""
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_EMBEDDED is not set
 CONFIG_KALLSYMS=y
 # CONFIG_KALLSYMS_ALL is not set
@@ -151,7 +152,7 @@ CONFIG_FLATMEM_MANUAL=y
 CONFIG_FLATMEM=y
 CONFIG_FLAT_NODE_MEM_MAP=y
 # CONFIG_SPARSEMEM_STATIC is not set
-CONFIG_SPLIT_PTLOCK_CPUS=4096
+CONFIG_SPLIT_PTLOCK_CPUS=4
 # CONFIG_PPC_64K_PAGES is not set
 CONFIG_SCHED_SMT=y
 CONFIG_PROC_DEVICETREE=y
diff --git a/arch/powerpc/configs/g5_defconfig b/arch/powerpc/configs/g5_defconfig
index e7c23e3..3c22ccb 100644
--- a/arch/powerpc/configs/g5_defconfig
+++ b/arch/powerpc/configs/g5_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.15-rc1
-# Tue Nov 15 14:39:20 2005
+# Linux kernel version: 2.6.15-rc5
+# Tue Dec 20 15:59:30 2005
 #
 CONFIG_PPC64=y
 CONFIG_64BIT=y
@@ -53,6 +53,7 @@ CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 # CONFIG_CPUSETS is not set
 CONFIG_INITRAMFS_SOURCE=""
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_EMBEDDED is not set
 CONFIG_KALLSYMS=y
 # CONFIG_KALLSYMS_ALL is not set
@@ -162,7 +163,7 @@ CONFIG_FLATMEM_MANUAL=y
 CONFIG_FLATMEM=y
 CONFIG_FLAT_NODE_MEM_MAP=y
 # CONFIG_SPARSEMEM_STATIC is not set
-CONFIG_SPLIT_PTLOCK_CPUS=4096
+CONFIG_SPLIT_PTLOCK_CPUS=4
 # CONFIG_PPC_64K_PAGES is not set
 # CONFIG_SCHED_SMT is not set
 CONFIG_PROC_DEVICETREE=y
@@ -1203,6 +1204,7 @@ CONFIG_USB_MON=y
 CONFIG_USB_SERIAL=m
 CONFIG_USB_SERIAL_GENERIC=y
 # CONFIG_USB_SERIAL_AIRPRIME is not set
+# CONFIG_USB_SERIAL_ANYDATA is not set
 CONFIG_USB_SERIAL_BELKIN=m
 CONFIG_USB_SERIAL_DIGI_ACCELEPORT=m
 # CONFIG_USB_SERIAL_CP2101 is not set
@@ -1233,7 +1235,6 @@ CONFIG_USB_SERIAL_KEYSPAN_USA49WLC=y
 CONFIG_USB_SERIAL_KLSI=m
 CONFIG_USB_SERIAL_KOBIL_SCT=m
 CONFIG_USB_SERIAL_MCT_U232=m
-# CONFIG_USB_SERIAL_NOKIA_DKU2 is not set
 CONFIG_USB_SERIAL_PL2303=m
 # CONFIG_USB_SERIAL_HP4X is not set
 CONFIG_USB_SERIAL_SAFE=m
diff --git a/arch/powerpc/configs/iseries_defconfig b/arch/powerpc/configs/iseries_defconfig
index 5d08667..751a622 100644
--- a/arch/powerpc/configs/iseries_defconfig
+++ b/arch/powerpc/configs/iseries_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.15-rc1
-# Tue Nov 15 14:38:09 2005
+# Linux kernel version: 2.6.15-rc5
+# Tue Dec 20 15:59:32 2005
 #
 CONFIG_PPC64=y
 CONFIG_64BIT=y
@@ -55,6 +55,7 @@ CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 # CONFIG_CPUSETS is not set
 CONFIG_INITRAMFS_SOURCE=""
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_EMBEDDED is not set
 CONFIG_KALLSYMS=y
 # CONFIG_KALLSYMS_ALL is not set
@@ -144,7 +145,7 @@ CONFIG_FLATMEM_MANUAL=y
 CONFIG_FLATMEM=y
 CONFIG_FLAT_NODE_MEM_MAP=y
 # CONFIG_SPARSEMEM_STATIC is not set
-CONFIG_SPLIT_PTLOCK_CPUS=4096
+CONFIG_SPLIT_PTLOCK_CPUS=4
 # CONFIG_PPC_64K_PAGES is not set
 # CONFIG_SCHED_SMT is not set
 CONFIG_PROC_DEVICETREE=y
diff --git a/arch/powerpc/configs/maple_defconfig b/arch/powerpc/configs/maple_defconfig
index 92e4261..07b6d3d 100644
--- a/arch/powerpc/configs/maple_defconfig
+++ b/arch/powerpc/configs/maple_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.15-rc1
-# Tue Nov 15 14:38:58 2005
+# Linux kernel version: 2.6.15-rc5
+# Tue Dec 20 15:59:36 2005
 #
 CONFIG_PPC64=y
 CONFIG_64BIT=y
@@ -53,6 +53,7 @@ CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 # CONFIG_CPUSETS is not set
 CONFIG_INITRAMFS_SOURCE=""
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_EMBEDDED is not set
 CONFIG_KALLSYMS=y
 CONFIG_KALLSYMS_ALL=y
@@ -149,7 +150,7 @@ CONFIG_FLATMEM_MANUAL=y
 CONFIG_FLATMEM=y
 CONFIG_FLAT_NODE_MEM_MAP=y
 # CONFIG_SPARSEMEM_STATIC is not set
-CONFIG_SPLIT_PTLOCK_CPUS=4096
+CONFIG_SPLIT_PTLOCK_CPUS=4
 # CONFIG_PPC_64K_PAGES is not set
 # CONFIG_SCHED_SMT is not set
 CONFIG_PROC_DEVICETREE=y
@@ -242,7 +243,6 @@ CONFIG_TCP_CONG_BIC=y
 # QoS and/or fair queueing
 #
 # CONFIG_NET_SCHED is not set
-# CONFIG_NET_CLS_ROUTE is not set
 
 #
 # Network testing
@@ -794,6 +794,7 @@ CONFIG_USB_SERIAL=y
 # CONFIG_USB_SERIAL_CONSOLE is not set
 CONFIG_USB_SERIAL_GENERIC=y
 # CONFIG_USB_SERIAL_AIRPRIME is not set
+# CONFIG_USB_SERIAL_ANYDATA is not set
 # CONFIG_USB_SERIAL_BELKIN is not set
 # CONFIG_USB_SERIAL_DIGI_ACCELEPORT is not set
 # CONFIG_USB_SERIAL_CP2101 is not set
@@ -824,7 +825,6 @@ CONFIG_USB_SERIAL_KEYSPAN_USA49WLC=y
 # CONFIG_USB_SERIAL_KLSI is not set
 # CONFIG_USB_SERIAL_KOBIL_SCT is not set
 # CONFIG_USB_SERIAL_MCT_U232 is not set
-# CONFIG_USB_SERIAL_NOKIA_DKU2 is not set
 # CONFIG_USB_SERIAL_PL2303 is not set
 # CONFIG_USB_SERIAL_HP4X is not set
 # CONFIG_USB_SERIAL_SAFE is not set
diff --git a/arch/powerpc/configs/ppc64_defconfig b/arch/powerpc/configs/ppc64_defconfig
index b5ba3bb..509399e 100644
--- a/arch/powerpc/configs/ppc64_defconfig
+++ b/arch/powerpc/configs/ppc64_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.15-rc1
-# Fri Nov 18 16:23:24 2005
+# Linux kernel version: 2.6.15-rc5
+# Tue Dec 20 15:59:38 2005
 #
 CONFIG_PPC64=y
 CONFIG_64BIT=y
@@ -54,6 +54,7 @@ CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_CPUSETS=y
 CONFIG_INITRAMFS_SOURCE=""
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_EMBEDDED is not set
 CONFIG_KALLSYMS=y
 CONFIG_KALLSYMS_ALL=y
@@ -176,7 +177,7 @@ CONFIG_HAVE_MEMORY_PRESENT=y
 # CONFIG_SPARSEMEM_STATIC is not set
 CONFIG_SPARSEMEM_EXTREME=y
 # CONFIG_MEMORY_HOTPLUG is not set
-CONFIG_SPLIT_PTLOCK_CPUS=4096
+CONFIG_SPLIT_PTLOCK_CPUS=4
 # CONFIG_PPC_64K_PAGES is not set
 # CONFIG_SCHED_SMT is not set
 CONFIG_PROC_DEVICETREE=y
diff --git a/arch/powerpc/configs/pseries_defconfig b/arch/powerpc/configs/pseries_defconfig
index b589b19..a50ce0f 100644
--- a/arch/powerpc/configs/pseries_defconfig
+++ b/arch/powerpc/configs/pseries_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.15-rc1
-# Tue Nov 15 14:36:55 2005
+# Linux kernel version: 2.6.15-rc5
+# Tue Dec 20 15:59:40 2005
 #
 CONFIG_PPC64=y
 CONFIG_64BIT=y
@@ -55,6 +55,7 @@ CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_CPUSETS=y
 CONFIG_INITRAMFS_SOURCE=""
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_EMBEDDED is not set
 CONFIG_KALLSYMS=y
 CONFIG_KALLSYMS_ALL=y
@@ -163,7 +164,7 @@ CONFIG_HAVE_MEMORY_PRESENT=y
 # CONFIG_SPARSEMEM_STATIC is not set
 CONFIG_SPARSEMEM_EXTREME=y
 # CONFIG_MEMORY_HOTPLUG is not set
-CONFIG_SPLIT_PTLOCK_CPUS=4096
+CONFIG_SPLIT_PTLOCK_CPUS=4
 CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID=y
 # CONFIG_PPC_64K_PAGES is not set
 CONFIG_SCHED_SMT=y
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 2d22bf0..bce33a3 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -183,8 +183,8 @@ syscall_exit_trace_cont:
 	ld	r13,GPR13(r1)		/* returning to usermode */
 1:	ld	r2,GPR2(r1)
 	li	r12,MSR_RI
-	andc	r10,r10,r12
-	mtmsrd	r10,1			/* clear MSR.RI */
+	andc	r11,r10,r12
+	mtmsrd	r11,1			/* clear MSR.RI */
 	ld	r1,GPR1(r1)
 	mtlr	r4
 	mtcr	r5
diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c
index 511af54..5368f9c 100644
--- a/arch/powerpc/kernel/kprobes.c
+++ b/arch/powerpc/kernel/kprobes.c
@@ -177,7 +177,7 @@ static inline int kprobe_handler(struct pt_regs *regs)
 			save_previous_kprobe(kcb);
 			set_current_kprobe(p, regs, kcb);
 			kcb->kprobe_saved_msr = regs->msr;
-			p->nmissed++;
+			kprobes_inc_nmissed_count(p);
 			prepare_singlestep(p, regs);
 			kcb->kprobe_status = KPROBE_REENTER;
 			return 1;
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 608fee7..e3fb783 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -102,7 +102,15 @@ int boot_cpuid_phys = 0;
 dev_t boot_dev;
 u64 ppc64_pft_size;
 
-struct ppc64_caches ppc64_caches;
+/* Pick defaults since we might want to patch instructions
+ * before we've read this from the device tree.
+ */
+struct ppc64_caches ppc64_caches = {
+	.dline_size = 0x80,
+	.log_dline_size = 7,
+	.iline_size = 0x80,
+	.log_iline_size = 7
+};
 EXPORT_SYMBOL_GPL(ppc64_caches);
 
 /*
diff --git a/arch/powerpc/kernel/syscalls.c b/arch/powerpc/kernel/syscalls.c
index f72ced1..91b93d9 100644
--- a/arch/powerpc/kernel/syscalls.c
+++ b/arch/powerpc/kernel/syscalls.c
@@ -247,7 +247,7 @@ long ppc64_personality(unsigned long personality)
 #define OVERRIDE_MACHINE    0
 #endif
 
-static inline int override_machine(char *mach)
+static inline int override_machine(char __user *mach)
 {
 	if (OVERRIDE_MACHINE) {
 		/* change ppc64 to ppc */
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index 71a6add..13c4149 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -293,6 +293,6 @@ static int vio_hotplug(struct device *dev, char **envp, int num_envp,
 
 struct bus_type vio_bus_type = {
 	.name = "vio",
-	.hotplug = vio_hotplug,
+	.uevent = vio_hotplug,
 	.match = vio_bus_match,
 };
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 706e8a6..a606504 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -514,7 +514,7 @@ void __init htab_initialize(void)
 #undef KB
 #undef MB
 
-void __init htab_initialize_secondary(void)
+void htab_initialize_secondary(void)
 {
 	if (!platform_is_lpar())
 		mtspr(SPRN_SDR1, _SDR1);
@@ -601,7 +601,7 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
 	/* Handle hugepage regions */
 	if (unlikely(in_hugepage_area(mm->context, ea))) {
 		DBG_LOW(" -> huge page !\n");
-		return hash_huge_page(mm, access, ea, vsid, local);
+		return hash_huge_page(mm, access, ea, vsid, local, trap);
 	}
 
 	/* Get PTE and page size from page tables */
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 6bc9dba..54131b8 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -148,43 +148,63 @@ int is_aligned_hugepage_range(unsigned long addr, unsigned long len)
 	return 0;
 }
 
+struct slb_flush_info {
+	struct mm_struct *mm;
+	u16 newareas;
+};
+
 static void flush_low_segments(void *parm)
 {
-	u16 areas = (unsigned long) parm;
+	struct slb_flush_info *fi = parm;
 	unsigned long i;
 
-	asm volatile("isync" : : : "memory");
+	BUILD_BUG_ON((sizeof(fi->newareas)*8) != NUM_LOW_AREAS);
+
+	if (current->active_mm != fi->mm)
+		return;
+
+	/* Only need to do anything if this CPU is working in the same
+	 * mm as the one which has changed */
 
-	BUILD_BUG_ON((sizeof(areas)*8) != NUM_LOW_AREAS);
+	/* update the paca copy of the context struct */
+	get_paca()->context = current->active_mm->context;
 
+	asm volatile("isync" : : : "memory");
 	for (i = 0; i < NUM_LOW_AREAS; i++) {
-		if (! (areas & (1U << i)))
+		if (! (fi->newareas & (1U << i)))
 			continue;
 		asm volatile("slbie %0"
 			     : : "r" ((i << SID_SHIFT) | SLBIE_C));
 	}
-
 	asm volatile("isync" : : : "memory");
 }
 
 static void flush_high_segments(void *parm)
 {
-	u16 areas = (unsigned long) parm;
+	struct slb_flush_info *fi = parm;
 	unsigned long i, j;
 
-	asm volatile("isync" : : : "memory");
 
-	BUILD_BUG_ON((sizeof(areas)*8) != NUM_HIGH_AREAS);
+	BUILD_BUG_ON((sizeof(fi->newareas)*8) != NUM_HIGH_AREAS);
 
+	if (current->active_mm != fi->mm)
+		return;
+
+	/* Only need to do anything if this CPU is working in the same
+	 * mm as the one which has changed */
+
+	/* update the paca copy of the context struct */
+	get_paca()->context = current->active_mm->context;
+
+	asm volatile("isync" : : : "memory");
 	for (i = 0; i < NUM_HIGH_AREAS; i++) {
-		if (! (areas & (1U << i)))
+		if (! (fi->newareas & (1U << i)))
 			continue;
 		for (j = 0; j < (1UL << (HTLB_AREA_SHIFT-SID_SHIFT)); j++)
 			asm volatile("slbie %0"
 				     :: "r" (((i << HTLB_AREA_SHIFT)
-					     + (j << SID_SHIFT)) | SLBIE_C));
+					      + (j << SID_SHIFT)) | SLBIE_C));
 	}
-
 	asm volatile("isync" : : : "memory");
 }
 
@@ -229,6 +249,7 @@ static int prepare_high_area_for_htlb(struct mm_struct *mm, unsigned long area)
 static int open_low_hpage_areas(struct mm_struct *mm, u16 newareas)
 {
 	unsigned long i;
+	struct slb_flush_info fi;
 
 	BUILD_BUG_ON((sizeof(newareas)*8) != NUM_LOW_AREAS);
 	BUILD_BUG_ON((sizeof(mm->context.low_htlb_areas)*8) != NUM_LOW_AREAS);
@@ -244,19 +265,20 @@ static int open_low_hpage_areas(struct mm_struct *mm, u16 newareas)
 
 	mm->context.low_htlb_areas |= newareas;
 
-	/* update the paca copy of the context struct */
-	get_paca()->context = mm->context;
-
 	/* the context change must make it to memory before the flush,
 	 * so that further SLB misses do the right thing. */
 	mb();
-	on_each_cpu(flush_low_segments, (void *)(unsigned long)newareas, 0, 1);
+
+	fi.mm = mm;
+	fi.newareas = newareas;
+	on_each_cpu(flush_low_segments, &fi, 0, 1);
 
 	return 0;
 }
 
 static int open_high_hpage_areas(struct mm_struct *mm, u16 newareas)
 {
+	struct slb_flush_info fi;
 	unsigned long i;
 
 	BUILD_BUG_ON((sizeof(newareas)*8) != NUM_HIGH_AREAS);
@@ -280,7 +302,10 @@ static int open_high_hpage_areas(struct mm_struct *mm, u16 newareas)
 	/* the context change must make it to memory before the flush,
 	 * so that further SLB misses do the right thing. */
 	mb();
-	on_each_cpu(flush_high_segments, (void *)(unsigned long)newareas, 0, 1);
+
+	fi.mm = mm;
+	fi.newareas = newareas;
+	on_each_cpu(flush_high_segments, &fi, 0, 1);
 
 	return 0;
 }
@@ -639,8 +664,36 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
 	return -ENOMEM;
 }
 
+/*
+ * Called by asm hashtable.S for doing lazy icache flush
+ */
+static unsigned int hash_huge_page_do_lazy_icache(unsigned long rflags,
+						  pte_t pte, int trap)
+{
+	struct page *page;
+	int i;
+
+	if (!pfn_valid(pte_pfn(pte)))
+		return rflags;
+
+	page = pte_page(pte);
+
+	/* page is dirty */
+	if (!test_bit(PG_arch_1, &page->flags) && !PageReserved(page)) {
+		if (trap == 0x400) {
+			for (i = 0; i < (HPAGE_SIZE / PAGE_SIZE); i++)
+				__flush_dcache_icache(page_address(page+i));
+			set_bit(PG_arch_1, &page->flags);
+		} else {
+			rflags |= HPTE_R_N;
+		}
+	}
+	return rflags;
+}
+
 int hash_huge_page(struct mm_struct *mm, unsigned long access,
-		   unsigned long ea, unsigned long vsid, int local)
+		   unsigned long ea, unsigned long vsid, int local,
+		   unsigned long trap)
 {
 	pte_t *ptep;
 	unsigned long old_pte, new_pte;
@@ -691,6 +744,11 @@ int hash_huge_page(struct mm_struct *mm, unsigned long access,
 	rflags = 0x2 | (!(new_pte & _PAGE_RW));
  	/* _PAGE_EXEC -> HW_NO_EXEC since it's inverted */
 	rflags |= ((new_pte & _PAGE_EXEC) ? 0 : HPTE_R_N);
+	if (!cpu_has_feature(CPU_FTR_COHERENT_ICACHE))
+		/* No CPU has hugepages but lacks no execute, so we
+		 * don't need to worry about that case */
+		rflags = hash_huge_page_do_lazy_icache(rflags, __pte(old_pte),
+						       trap);
 
 	/* Check if pte already has an hpte (case 2) */
 	if (unlikely(old_pte & _PAGE_HASHPTE)) {
@@ -703,7 +761,8 @@ int hash_huge_page(struct mm_struct *mm, unsigned long access,
 		slot = (hash & htab_hash_mask) * HPTES_PER_GROUP;
 		slot += (old_pte & _PAGE_F_GIX) >> 12;
 
-		if (ppc_md.hpte_updatepp(slot, rflags, va, 1, local) == -1)
+		if (ppc_md.hpte_updatepp(slot, rflags, va, mmu_huge_psize,
+					 local) == -1)
 			old_pte &= ~_PAGE_HPTEFLAGS;
 	}
 
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index f72cf87..ba7a305 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -125,7 +125,7 @@ void __init get_region(unsigned int nid, unsigned long *start_pfn,
 
 	/* We didnt find a matching region, return start/end as 0 */
 	if (*start_pfn == -1UL)
-		start_pfn = 0;
+		*start_pfn = 0;
 }
 
 static inline void map_cpu_to_node(int cpu, int node)
diff --git a/arch/powerpc/mm/stab.c b/arch/powerpc/mm/stab.c
index cfbb4e1..51e7951 100644
--- a/arch/powerpc/mm/stab.c
+++ b/arch/powerpc/mm/stab.c
@@ -288,11 +288,6 @@ void stab_initialize(unsigned long stab)
 		return;
 	}
 #endif /* CONFIG_PPC_ISERIES */
-#ifdef CONFIG_PPC_PSERIES
-	if (platform_is_lpar()) {
-		plpar_hcall_norets(H_SET_ASR, stabreal);
-		return;
-	}
-#endif
+
 	mtspr(SPRN_ASR, stabreal);
 }
diff --git a/arch/powerpc/platforms/powermac/feature.c b/arch/powerpc/platforms/powermac/feature.c
index 0d7fa00..f6e22da 100644
--- a/arch/powerpc/platforms/powermac/feature.c
+++ b/arch/powerpc/platforms/powermac/feature.c
@@ -1650,11 +1650,19 @@ void pmac_tweak_clock_spreading(int enable)
 	 */
 
 	if (macio->type == macio_intrepid) {
-		if (enable)
-			UN_OUT(UNI_N_CLOCK_SPREADING, 2);
-		else
-			UN_OUT(UNI_N_CLOCK_SPREADING, 0);
-		mdelay(40);
+		struct device_node *clock =
+			of_find_node_by_path("/uni-n@f8000000/hw-clock");
+		if (clock && get_property(clock, "platform-do-clockspreading",
+					  NULL)) {
+			printk(KERN_INFO "%sabling clock spreading on Intrepid"
+			       " ASIC\n", enable ? "En" : "Dis");
+			if (enable)
+				UN_OUT(UNI_N_CLOCK_SPREADING, 2);
+			else
+				UN_OUT(UNI_N_CLOCK_SPREADING, 0);
+			mdelay(40);
+		}
+		of_node_put(clock);
 	}
 
 	while (machine_is_compatible("PowerBook5,2") ||
@@ -1724,6 +1732,9 @@ void pmac_tweak_clock_spreading(int enable)
 			pmac_low_i2c_close(ui2c);
 			break;
 		}
+		printk(KERN_INFO "%sabling clock spreading on i2c clock chip\n",
+		       enable ? "En" : "Dis");
+
 		pmac_low_i2c_setmode(ui2c, pmac_low_i2c_mode_stdsub);
 		rc = pmac_low_i2c_xfer(ui2c, 0xd2 | pmac_low_i2c_write, 0x80, buffer, 9);
 		DBG("write result: %d,", rc);
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index c78f2b2..2043659 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -109,6 +109,9 @@ static void tce_build_pSeriesLP(struct iommu_table *tbl, long tcenum,
 	u64 rc;
 	union tce_entry tce;
 
+	tcenum <<= TCE_PAGE_FACTOR;
+	npages <<= TCE_PAGE_FACTOR;
+
 	tce.te_word = 0;
 	tce.te_rpn = (virt_to_abs(uaddr)) >> TCE_SHIFT;
 	tce.te_rdwr = 1;
@@ -143,10 +146,7 @@ static void tce_buildmulti_pSeriesLP(struct iommu_table *tbl, long tcenum,
 	union tce_entry tce, *tcep;
 	long l, limit;
 
-	tcenum <<= TCE_PAGE_FACTOR;
-	npages <<= TCE_PAGE_FACTOR;
-
-	if (npages == 1)
+	if (TCE_PAGE_FACTOR == 0 && npages == 1)
 		return tce_build_pSeriesLP(tbl, tcenum, npages, uaddr,
 					   direction);
 
@@ -164,6 +164,9 @@ static void tce_buildmulti_pSeriesLP(struct iommu_table *tbl, long tcenum,
 		__get_cpu_var(tce_page) = tcep;
 	}
 
+	tcenum <<= TCE_PAGE_FACTOR;
+	npages <<= TCE_PAGE_FACTOR;
+
 	tce.te_word = 0;
 	tce.te_rpn = (virt_to_abs(uaddr)) >> TCE_SHIFT;
 	tce.te_rdwr = 1;
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index a50e5f3..cf1bc11 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -298,18 +298,6 @@ long pSeries_lpar_hpte_insert(unsigned long hpte_group,
 	if (!(vflags & HPTE_V_BOLTED))
 		DBG_LOW(" hpte_v=%016lx, hpte_r=%016lx\n", hpte_v, hpte_r);
 
-#if 1
-	{
-		int i;
-		for (i=0;i<8;i++) {
-			unsigned long w0, w1;
-			plpar_pte_read(0, hpte_group, &w0, &w1);
-			BUG_ON (HPTE_V_COMPARE(hpte_v, w0)
-				&& (w0 & HPTE_V_VALID));
-		}
-	}
-#endif
-
 	/* Now fill in the actual HPTE */
 	/* Set CEC cookie to 0         */
 	/* Zero page = 0               */
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index 72ac180..0377dec 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -48,11 +48,6 @@ static struct hw_interrupt_type xics_pic = {
 	.set_affinity = xics_set_affinity
 };
 
-static struct hw_interrupt_type xics_8259_pic = {
-	.typename = " XICS/8259",
-	.ack = xics_mask_and_ack_irq,
-};
-
 /* This is used to map real irq numbers to virtual */
 static struct radix_tree_root irq_map = RADIX_TREE_INIT(GFP_ATOMIC);
 
@@ -367,12 +362,7 @@ int xics_get_irq(struct pt_regs *regs)
 	/* for sanity, this had better be < NR_IRQS - 16 */
 	if (vec == xics_irq_8259_cascade_real) {
 		irq = i8259_irq(regs);
-		if (irq == -1) {
-			/* Spurious cascaded interrupt.  Still must ack xics */
-			xics_end_irq(irq_offset_up(xics_irq_8259_cascade));
-
-			irq = -1;
-		}
+		xics_end_irq(irq_offset_up(xics_irq_8259_cascade));
 	} else if (vec == XICS_IRQ_SPURIOUS) {
 		irq = -1;
 	} else {
@@ -542,6 +532,7 @@ nextnode:
 		xics_irq_8259_cascade_real = *ireg;
 		xics_irq_8259_cascade
 			= virt_irq_create_mapping(xics_irq_8259_cascade_real);
+		i8259_init(0, 0);
 		of_node_put(np);
 	}
 
@@ -565,12 +556,7 @@ nextnode:
 #endif /* CONFIG_SMP */
 	}
 
-	xics_8259_pic.enable = i8259_pic.enable;
-	xics_8259_pic.disable = i8259_pic.disable;
-	xics_8259_pic.end = i8259_pic.end;
-	for (i = 0; i < 16; ++i)
-		get_irq_desc(i)->handler = &xics_8259_pic;
-	for (; i < NR_IRQS; ++i)
+	for (i = irq_offset_value(); i < NR_IRQS; ++i)
 		get_irq_desc(i)->handler = &xics_pic;
 
 	xics_setup_cpu();
@@ -590,7 +576,6 @@ static int __init xics_setup_i8259(void)
 				no_action, 0, "8259 cascade", NULL))
 			printk(KERN_ERR "xics_setup_i8259: couldn't get 8259 "
 					"cascade\n");
-		i8259_init(0, 0);
 	}
 	return 0;
 }