Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (72 commits)
  powerpc/pseries: Fix build of topology stuff without CONFIG_NUMA
  powerpc/pseries: Fix VPHN build errors on non-SMP systems
  powerpc/83xx: add mpc8308_p1m DMA controller device-tree node
  powerpc/83xx: add DMA controller to mpc8308 device-tree node
  powerpc/512x: try to free dma descriptors in case of allocation failure
  powerpc/512x: add MPC8308 dma support
  powerpc/512x: fix the hanged dma transfer issue
  powerpc/512x: scatter/gather dma fix
  powerpc/powermac: Make auto-loading of therm_pm72 possible
  of/address: Use propper endianess in get_flags
  powerpc/pci: Use printf extension %pR for struct resource
  powerpc: Remove unnecessary casts of void ptr
  powerpc: Disable VPHN polling during a suspend operation
  powerpc/pseries: Poll VPA for topology changes and update NUMA maps
  powerpc: iommu: Add device name to iommu error printks
  powerpc: Record vma->phys_addr in ioremap()
  powerpc: Update compat_arch_ptrace
  powerpc: Fix PPC_PTRACE_SETHWDEBUG on PPC_BOOK3S
  powerpc/time: printk time stamp init not correct
  powerpc: Minor cleanups for machdep.h
  ...

29 files changed, 301 insertions, 366 deletions

diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 36c30f3..3bb2a3e 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -29,8 +29,10 @@ endif
 obj-y				:= cputable.o ptrace.o syscalls.o \
 				   irq.o align.o signal_32.o pmc.o vdso.o \
 				   init_task.o process.o systbl.o idle.o \
-				   signal.o sysfs.o cacheinfo.o
-obj-y				+= vdso32/
+				   signal.o sysfs.o cacheinfo.o time.o \
+				   prom.o traps.o setup-common.o \
+				   udbg.o misc.o io.o dma.o \
+				   misc_$(CONFIG_WORD_SIZE).o vdso32/
 obj-$(CONFIG_PPC64)		+= setup_64.o sys_ppc32.o \
 				   signal_64.o ptrace32.o \
 				   paca.o nvram_64.o firmware.o
@@ -80,9 +82,6 @@ extra-$(CONFIG_FSL_BOOKE)	:= head_fsl_booke.o
 extra-$(CONFIG_8xx)		:= head_8xx.o
 extra-y				+= vmlinux.lds
 
-obj-y				+= time.o prom.o traps.o setup-common.o \
-				   udbg.o misc.o io.o dma.o \
-				   misc_$(CONFIG_WORD_SIZE).o
 obj-$(CONFIG_PPC32)		+= entry_32.o setup_32.o
 obj-$(CONFIG_PPC64)		+= dma-iommu.o iommu.o
 obj-$(CONFIG_KGDB)		+= kgdb.o
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index bd0df2e..23e6a93 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -209,7 +209,6 @@ int main(void)
 	DEFINE(RTASENTRY, offsetof(struct rtas_t, entry));
 
 	/* Interrupt register frame */
-	DEFINE(STACK_FRAME_OVERHEAD, STACK_FRAME_OVERHEAD);
 	DEFINE(INT_FRAME_SIZE, STACK_INT_FRAME_SIZE);
 	DEFINE(SWITCH_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs));
 #ifdef CONFIG_PPC64
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 96a908f..be5ab18 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -457,16 +457,26 @@ static struct cpu_spec __initdata cpu_specs[] = {
 		.dcache_bsize		= 128,
 		.num_pmcs		= 6,
 		.pmc_type		= PPC_PMC_IBM,
-		.cpu_setup		= __setup_cpu_power7,
-		.cpu_restore		= __restore_cpu_power7,
 		.oprofile_cpu_type	= "ppc64/power7",
 		.oprofile_type		= PPC_OPROFILE_POWER4,
-		.oprofile_mmcra_sihv	= POWER6_MMCRA_SIHV,
-		.oprofile_mmcra_sipr	= POWER6_MMCRA_SIPR,
-		.oprofile_mmcra_clear	= POWER6_MMCRA_THRM |
-			POWER6_MMCRA_OTHER,
 		.platform		= "power7",
 	},
+	{	/* Power7+ */
+		.pvr_mask		= 0xffff0000,
+		.pvr_value		= 0x004A0000,
+		.cpu_name		= "POWER7+ (raw)",
+		.cpu_features		= CPU_FTRS_POWER7,
+		.cpu_user_features	= COMMON_USER_POWER7,
+		.mmu_features		= MMU_FTR_HPTE_TABLE |
+			MMU_FTR_TLBIE_206,
+		.icache_bsize		= 128,
+		.dcache_bsize		= 128,
+		.num_pmcs		= 6,
+		.pmc_type		= PPC_PMC_IBM,
+		.oprofile_cpu_type	= "ppc64/power7",
+		.oprofile_type		= PPC_OPROFILE_POWER4,
+		.platform		= "power7+",
+	},
 	{	/* Cell Broadband Engine */
 		.pvr_mask		= 0xffff0000,
 		.pvr_value		= 0x00700000,
diff --git a/arch/powerpc/kernel/crash_dump.c b/arch/powerpc/kernel/crash_dump.c
index 8e05c16..0a2af50 100644
--- a/arch/powerpc/kernel/crash_dump.c
+++ b/arch/powerpc/kernel/crash_dump.c
@@ -19,6 +19,7 @@
 #include <asm/prom.h>
 #include <asm/firmware.h>
 #include <asm/uaccess.h>
+#include <asm/rtas.h>
 
 #ifdef DEBUG
 #include <asm/udbg.h>
@@ -141,3 +142,35 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
 
 	return csize;
 }
+
+#ifdef CONFIG_PPC_RTAS
+/*
+ * The crashkernel region will almost always overlap the RTAS region, so
+ * we have to be careful when shrinking the crashkernel region.
+ */
+void crash_free_reserved_phys_range(unsigned long begin, unsigned long end)
+{
+	unsigned long addr;
+	const u32 *basep, *sizep;
+	unsigned int rtas_start = 0, rtas_end = 0;
+
+	basep = of_get_property(rtas.dev, "linux,rtas-base", NULL);
+	sizep = of_get_property(rtas.dev, "rtas-size", NULL);
+
+	if (basep && sizep) {
+		rtas_start = *basep;
+		rtas_end = *basep + *sizep;
+	}
+
+	for (addr = begin; addr < end; addr += PAGE_SIZE) {
+		/* Does this page overlap with the RTAS region? */
+		if (addr <= rtas_end && ((addr + PAGE_SIZE) > rtas_start))
+			continue;
+
+		ClearPageReserved(pfn_to_page(addr >> PAGE_SHIFT));
+		init_page_count(pfn_to_page(addr >> PAGE_SHIFT));
+		free_page((unsigned long)__va(addr));
+		totalram_pages++;
+	}
+}
+#endif
diff --git a/arch/powerpc/kernel/dma-iommu.c b/arch/powerpc/kernel/dma-iommu.c
index 6e54a0f..e755415 100644
--- a/arch/powerpc/kernel/dma-iommu.c
+++ b/arch/powerpc/kernel/dma-iommu.c
@@ -19,7 +19,7 @@ static void *dma_iommu_alloc_coherent(struct device *dev, size_t size,
 				      dma_addr_t *dma_handle, gfp_t flag)
 {
 	return iommu_alloc_coherent(dev, get_iommu_table_base(dev), size,
-				    dma_handle, device_to_mask(dev), flag,
+				    dma_handle, dev->coherent_dma_mask, flag,
 				    dev_to_node(dev));
 }
 
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index ed4aeb9..c22dc1e 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -31,6 +31,7 @@
 #include <asm/asm-offsets.h>
 #include <asm/unistd.h>
 #include <asm/ftrace.h>
+#include <asm/ptrace.h>
 
 #undef SHOW_SYSCALLS
 #undef SHOW_SYSCALLS_TASK
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 9f8b01d..8a81799 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -13,6 +13,7 @@
  */
 
 #include <asm/exception-64s.h>
+#include <asm/ptrace.h>
 
 /*
  * We layout physical memory as follows:
diff --git a/arch/powerpc/kernel/fpu.S b/arch/powerpc/kernel/fpu.S
index e86c040..de36955 100644
--- a/arch/powerpc/kernel/fpu.S
+++ b/arch/powerpc/kernel/fpu.S
@@ -23,6 +23,7 @@
 #include <asm/thread_info.h>
 #include <asm/ppc_asm.h>
 #include <asm/asm-offsets.h>
+#include <asm/ptrace.h>
 
 #ifdef CONFIG_VSX
 #define REST_32FPVSRS(n,c,base)						\
diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S
index 8278e8b..9dd21a8 100644
--- a/arch/powerpc/kernel/head_40x.S
+++ b/arch/powerpc/kernel/head_40x.S
@@ -40,6 +40,7 @@
 #include <asm/thread_info.h>
 #include <asm/ppc_asm.h>
 #include <asm/asm-offsets.h>
+#include <asm/ptrace.h>
 
 /* As with the other PowerPC ports, it is expected that when code
  * execution begins here, the following registers contain valid, yet
diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S
index 562305b..cbb3436 100644
--- a/arch/powerpc/kernel/head_44x.S
+++ b/arch/powerpc/kernel/head_44x.S
@@ -37,6 +37,7 @@
 #include <asm/thread_info.h>
 #include <asm/ppc_asm.h>
 #include <asm/asm-offsets.h>
+#include <asm/ptrace.h>
 #include <asm/synch.h>
 #include "head_booke.h"
 
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index f0dd577..782f23d 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -38,6 +38,7 @@
 #include <asm/page_64.h>
 #include <asm/irqflags.h>
 #include <asm/kvm_book3s_asm.h>
+#include <asm/ptrace.h>
 
 /* The physical memory is layed out such that the secondary processor
  * spin code sits at 0x0000...0x00ff. On server, the vectors follow
@@ -96,7 +97,7 @@ __secondary_hold_acknowledge:
 	.llong hvReleaseData-KERNELBASE
 #endif /* CONFIG_PPC_ISERIES */
 
-#ifdef CONFIG_CRASH_DUMP
+#ifdef CONFIG_RELOCATABLE
 	/* This flag is set to 1 by a loader if the kernel should run
 	 * at the loaded address instead of the linked address.  This
 	 * is used by kexec-tools to keep the the kdump kernel in the
@@ -384,12 +385,10 @@ _STATIC(__after_prom_start)
 	/* process relocations for the final address of the kernel */
 	lis	r25,PAGE_OFFSET@highest	/* compute virtual base of kernel */
 	sldi	r25,r25,32
-#ifdef CONFIG_CRASH_DUMP
 	lwz	r7,__run_at_load-_stext(r26)
-	cmplwi	cr0,r7,1	/* kdump kernel ? - stay where we are */
+	cmplwi	cr0,r7,1	/* flagged to stay where we are ? */
 	bne	1f
 	add	r25,r25,r26
-#endif
 1:	mr	r3,r25
 	bl	.relocate
 #endif
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S
index 1f1a04b..1cbf64e 100644
--- a/arch/powerpc/kernel/head_8xx.S
+++ b/arch/powerpc/kernel/head_8xx.S
@@ -29,6 +29,7 @@
 #include <asm/thread_info.h>
 #include <asm/ppc_asm.h>
 #include <asm/asm-offsets.h>
+#include <asm/ptrace.h>
 
 /* Macro to make the code more readable. */
 #ifdef CONFIG_8xx_CPU6
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S
index 529b817..3e02710 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -41,6 +41,7 @@
 #include <asm/ppc_asm.h>
 #include <asm/asm-offsets.h>
 #include <asm/cache.h>
+#include <asm/ptrace.h>
 #include "head_booke.h"
 
 /* As with the other PowerPC ports, it is expected that when code
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index d583917..961bb03 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -311,8 +311,9 @@ int iommu_map_sg(struct device *dev, struct iommu_table *tbl,
 		/* Handle failure */
 		if (unlikely(entry == DMA_ERROR_CODE)) {
 			if (printk_ratelimit())
-				printk(KERN_INFO "iommu_alloc failed, tbl %p vaddr %lx"
-				       " npages %lx\n", tbl, vaddr, npages);
+				dev_info(dev, "iommu_alloc failed, tbl %p "
+					 "vaddr %lx npages %lu\n", tbl, vaddr,
+					 npages);
 			goto failure;
 		}
 
@@ -579,9 +580,9 @@ dma_addr_t iommu_map_page(struct device *dev, struct iommu_table *tbl,
 					 attrs);
 		if (dma_handle == DMA_ERROR_CODE) {
 			if (printk_ratelimit())  {
-				printk(KERN_INFO "iommu_alloc failed, "
-						"tbl %p vaddr %p npages %d\n",
-						tbl, vaddr, npages);
+				dev_info(dev, "iommu_alloc failed, tbl %p "
+					 "vaddr %p npages %d\n", tbl, vaddr,
+					 npages);
 			}
 		} else
 			dma_handle |= (uaddr & ~IOMMU_PAGE_MASK);
@@ -627,7 +628,8 @@ void *iommu_alloc_coherent(struct device *dev, struct iommu_table *tbl,
 	 * the tce tables.
 	 */
 	if (order >= IOMAP_MAX_ORDER) {
-		printk("iommu_alloc_consistent size too large: 0x%lx\n", size);
+		dev_info(dev, "iommu_alloc_consistent size too large: 0x%lx\n",
+			 size);
 		return NULL;
 	}
 
diff --git a/arch/powerpc/kernel/misc.S b/arch/powerpc/kernel/misc.S
index 2d29752..b69463e 100644
--- a/arch/powerpc/kernel/misc.S
+++ b/arch/powerpc/kernel/misc.S
@@ -122,8 +122,3 @@ _GLOBAL(longjmp)
 	mtlr	r0
 	mr	r3,r4
 	blr
-
-_GLOBAL(__setup_cpu_power7)
-_GLOBAL(__restore_cpu_power7)
-	/* place holder */
-	blr
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index a7a570d..094bd98 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -30,6 +30,7 @@
 #include <asm/processor.h>
 #include <asm/kexec.h>
 #include <asm/bug.h>
+#include <asm/ptrace.h>
 
 	.text
 
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index e514490..206a321 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -25,6 +25,7 @@
 #include <asm/cputable.h>
 #include <asm/thread_info.h>
 #include <asm/kexec.h>
+#include <asm/ptrace.h>
 
 	.text
 
diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index 9cf197f..bb12b32 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -34,15 +34,26 @@
 
 #undef DEBUG_NVRAM
 
-static struct nvram_partition * nvram_part;
-static long nvram_error_log_index = -1;
-static long nvram_error_log_size = 0;
+#define NVRAM_HEADER_LEN	sizeof(struct nvram_header)
+#define NVRAM_BLOCK_LEN		NVRAM_HEADER_LEN
+
+/* If change this size, then change the size of NVNAME_LEN */
+struct nvram_header {
+	unsigned char signature;
+	unsigned char checksum;
+	unsigned short length;
+	/* Terminating null required only for names < 12 chars. */
+	char name[12];
+};
 
-struct err_log_info {
-	int error_type;
-	unsigned int seq_num;
+struct nvram_partition {
+	struct list_head partition;
+	struct nvram_header header;
+	unsigned int index;
 };
 
+static LIST_HEAD(nvram_partitions);
+
 static loff_t dev_nvram_llseek(struct file *file, loff_t offset, int origin)
 {
 	int size;
@@ -186,14 +197,12 @@ static struct miscdevice nvram_dev = {
 #ifdef DEBUG_NVRAM
 static void __init nvram_print_partitions(char * label)
 {
-	struct list_head * p;
 	struct nvram_partition * tmp_part;
 	
 	printk(KERN_WARNING "--------%s---------\n", label);
 	printk(KERN_WARNING "indx\t\tsig\tchks\tlen\tname\n");
-	list_for_each(p, &nvram_part->partition) {
-		tmp_part = list_entry(p, struct nvram_partition, partition);
-		printk(KERN_WARNING "%4d    \t%02x\t%02x\t%d\t%s\n",
+	list_for_each_entry(tmp_part, &nvram_partitions, partition) {
+		printk(KERN_WARNING "%4d    \t%02x\t%02x\t%d\t%12s\n",
 		       tmp_part->index, tmp_part->header.signature,
 		       tmp_part->header.checksum, tmp_part->header.length,
 		       tmp_part->header.name);
@@ -228,95 +237,113 @@ static unsigned char __init nvram_checksum(struct nvram_header *p)
 	return c_sum;
 }
 
-static int __init nvram_remove_os_partition(void)
+/**
+ * nvram_remove_partition - Remove one or more partitions in nvram
+ * @name: name of the partition to remove, or NULL for a
+ *        signature only match
+ * @sig: signature of the partition(s) to remove
+ */
+
+int __init nvram_remove_partition(const char *name, int sig)
 {
-	struct list_head *i;
-	struct list_head *j;
-	struct nvram_partition * part;
-	struct nvram_partition * cur_part;
+	struct nvram_partition *part, *prev, *tmp;
 	int rc;
 
-	list_for_each(i, &nvram_part->partition) {
-		part = list_entry(i, struct nvram_partition, partition);
-		if (part->header.signature != NVRAM_SIG_OS)
+	list_for_each_entry(part, &nvram_partitions, partition) {
+		if (part->header.signature != sig)
 			continue;
-		
-		/* Make os partition a free partition */
+		if (name && strncmp(name, part->header.name, 12))
+			continue;
+
+		/* Make partition a free partition */
 		part->header.signature = NVRAM_SIG_FREE;
-		sprintf(part->header.name, "wwwwwwwwwwww");
+		strncpy(part->header.name, "wwwwwwwwwwww", 12);
 		part->header.checksum = nvram_checksum(&part->header);
-
-		/* Merge contiguous free partitions backwards */
-		list_for_each_prev(j, &part->partition) {
-			cur_part = list_entry(j, struct nvram_partition, partition);
-			if (cur_part == nvram_part || cur_part->header.signature != NVRAM_SIG_FREE) {
-				break;
-			}
-			
-			part->header.length += cur_part->header.length;
-			part->header.checksum = nvram_checksum(&part->header);
-			part->index = cur_part->index;
-
-			list_del(&cur_part->partition);
-			kfree(cur_part);
-			j = &part->partition; /* fixup our loop */
-		}
-		
-		/* Merge contiguous free partitions forwards */
-		list_for_each(j, &part->partition) {
-			cur_part = list_entry(j, struct nvram_partition, partition);
-			if (cur_part == nvram_part || cur_part->header.signature != NVRAM_SIG_FREE) {
-				break;
-			}
-
-			part->header.length += cur_part->header.length;
-			part->header.checksum = nvram_checksum(&part->header);
-
-			list_del(&cur_part->partition);
-			kfree(cur_part);
-			j = &part->partition; /* fixup our loop */
-		}
-		
 		rc = nvram_write_header(part);
 		if (rc <= 0) {
-			printk(KERN_ERR "nvram_remove_os_partition: nvram_write failed (%d)\n", rc);
+			printk(KERN_ERR "nvram_remove_partition: nvram_write failed (%d)\n", rc);
 			return rc;
 		}
+	}
 
+	/* Merge contiguous ones */
+	prev = NULL;
+	list_for_each_entry_safe(part, tmp, &nvram_partitions, partition) {
+		if (part->header.signature != NVRAM_SIG_FREE) {
+			prev = NULL;
+			continue;
+		}
+		if (prev) {
+			prev->header.length += part->header.length;
+			prev->header.checksum = nvram_checksum(&part->header);
+			rc = nvram_write_header(part);
+			if (rc <= 0) {
+				printk(KERN_ERR "nvram_remove_partition: nvram_write failed (%d)\n", rc);
+				return rc;
+			}
+			list_del(&part->partition);
+			kfree(part);
+		} else
+			prev = part;
 	}
 	
 	return 0;
 }
 
-/* nvram_create_os_partition
+/**
+ * nvram_create_partition - Create a partition in nvram
+ * @name: name of the partition to create
+ * @sig: signature of the partition to create
+ * @req_size: size of data to allocate in bytes
+ * @min_size: minimum acceptable size (0 means req_size)
  *
- * Create a OS linux partition to buffer error logs.
- * Will create a partition starting at the first free
- * space found if space has enough room.
+ * Returns a negative error code or a positive nvram index
+ * of the beginning of the data area of the newly created
+ * partition. If you provided a min_size smaller than req_size
+ * you need to query for the actual size yourself after the
+ * call using nvram_partition_get_size().
  */
-static int __init nvram_create_os_partition(void)
+loff_t __init nvram_create_partition(const char *name, int sig,
+				     int req_size, int min_size)
 {
 	struct nvram_partition *part;
 	struct nvram_partition *new_part;
 	struct nvram_partition *free_part = NULL;
-	int seq_init[2] = { 0, 0 };
+	static char nv_init_vals[16];
 	loff_t tmp_index;
 	long size = 0;
 	int rc;
-	
+
+	/* Convert sizes from bytes to blocks */
+	req_size = _ALIGN_UP(req_size, NVRAM_BLOCK_LEN) / NVRAM_BLOCK_LEN;
+	min_size = _ALIGN_UP(min_size, NVRAM_BLOCK_LEN) / NVRAM_BLOCK_LEN;
+
+	/* If no minimum size specified, make it the same as the
+	 * requested size
+	 */
+	if (min_size == 0)
+		min_size = req_size;
+	if (min_size > req_size)
+		return -EINVAL;
+
+	/* Now add one block to each for the header */
+	req_size += 1;
+	min_size += 1;
+
 	/* Find a free partition that will give us the maximum needed size 
 	   If can't find one that will give us the minimum size needed */
-	list_for_each_entry(part, &nvram_part->partition, partition) {
+	list_for_each_entry(part, &nvram_partitions, partition) {
 		if (part->header.signature != NVRAM_SIG_FREE)
 			continue;
 
-		if (part->header.length >= NVRAM_MAX_REQ) {
-			size = NVRAM_MAX_REQ;
+		if (part->header.length >= req_size) {
+			size = req_size;
 			free_part = part;
 			break;
 		}
-		if (!size && part->header.length >= NVRAM_MIN_REQ) {
-			size = NVRAM_MIN_REQ;
+		if (part->header.length > size &&
+		    part->header.length >= min_size) {
+			size = part->header.length;
 			free_part = part;
 		}
 	}
@@ -326,136 +353,95 @@ static int __init nvram_create_os_partition(void)
 	/* Create our OS partition */
 	new_part = kmalloc(sizeof(*new_part), GFP_KERNEL);
 	if (!new_part) {
-		printk(KERN_ERR "nvram_create_os_partition: kmalloc failed\n");
+		pr_err("nvram_create_os_partition: kmalloc failed\n");
 		return -ENOMEM;
 	}
 
 	new_part->index = free_part->index;
-	new_part->header.signature = NVRAM_SIG_OS;
+	new_part->header.signature = sig;
 	new_part->header.length = size;
-	strcpy(new_part->header.name, "ppc64,linux");
+	strncpy(new_part->header.name, name, 12);
 	new_part->header.checksum = nvram_checksum(&new_part->header);
 
 	rc = nvram_write_header(new_part);
 	if (rc <= 0) {
-		printk(KERN_ERR "nvram_create_os_partition: nvram_write_header "
-				"failed (%d)\n", rc);
-		return rc;
-	}
-
-	/* make sure and initialize to zero the sequence number and the error
-	   type logged */
-	tmp_index = new_part->index + NVRAM_HEADER_LEN;
-	rc = ppc_md.nvram_write((char *)&seq_init, sizeof(seq_init), &tmp_index);
-	if (rc <= 0) {
-		printk(KERN_ERR "nvram_create_os_partition: nvram_write "
+		pr_err("nvram_create_os_partition: nvram_write_header "
 		       "failed (%d)\n", rc);
 		return rc;
 	}
-	
-	nvram_error_log_index = new_part->index + NVRAM_HEADER_LEN;
-	nvram_error_log_size = ((part->header.length - 1) *
-				NVRAM_BLOCK_LEN) - sizeof(struct err_log_info);
-	
 	list_add_tail(&new_part->partition, &free_part->partition);
 
-	if (free_part->header.length <= size) {
+	/* Adjust or remove the partition we stole the space from */
+	if (free_part->header.length > size) {
+		free_part->index += size * NVRAM_BLOCK_LEN;
+		free_part->header.length -= size;
+		free_part->header.checksum = nvram_checksum(&free_part->header);
+		rc = nvram_write_header(free_part);
+		if (rc <= 0) {
+			pr_err("nvram_create_os_partition: nvram_write_header "
+			       "failed (%d)\n", rc);
+			return rc;
+		}
+	} else {
 		list_del(&free_part->partition);
 		kfree(free_part);
-		return 0;
 	} 
 
-	/* Adjust the partition we stole the space from */
-	free_part->index += size * NVRAM_BLOCK_LEN;
-	free_part->header.length -= size;
-	free_part->header.checksum = nvram_checksum(&free_part->header);
-	
-	rc = nvram_write_header(free_part);
-	if (rc <= 0) {
-		printk(KERN_ERR "nvram_create_os_partition: nvram_write_header "
-		       "failed (%d)\n", rc);
-		return rc;
+	/* Clear the new partition */
+	for (tmp_index = new_part->index + NVRAM_HEADER_LEN;
+	     tmp_index <  ((size - 1) * NVRAM_BLOCK_LEN);
+	     tmp_index += NVRAM_BLOCK_LEN) {
+		rc = ppc_md.nvram_write(nv_init_vals, NVRAM_BLOCK_LEN, &tmp_index);
+		if (rc <= 0) {
+			pr_err("nvram_create_partition: nvram_write failed (%d)\n", rc);
+			return rc;
+		}
 	}
-
-	return 0;
+	
+	return new_part->index + NVRAM_HEADER_LEN;
 }
 
-
-/* nvram_setup_partition
- *
- * This will setup the partition we need for buffering the
- * error logs and cleanup partitions if needed.
- *
- * The general strategy is the following:
- * 1.) If there is ppc64,linux partition large enough then use it.
- * 2.) If there is not a ppc64,linux partition large enough, search
- * for a free partition that is large enough.
- * 3.) If there is not a free partition large enough remove 
- * _all_ OS partitions and consolidate the space.
- * 4.) Will first try getting a chunk that will satisfy the maximum
- * error log size (NVRAM_MAX_REQ).
- * 5.) If the max chunk cannot be allocated then try finding a chunk
- * that will satisfy the minum needed (NVRAM_MIN_REQ).
+/**
+ * nvram_get_partition_size - Get the data size of an nvram partition
+ * @data_index: This is the offset of the start of the data of
+ *              the partition. The same value that is returned by
+ *              nvram_create_partition().
  */
-static int __init nvram_setup_partition(void)
+int nvram_get_partition_size(loff_t data_index)
 {
-	struct list_head * p;
-	struct nvram_partition * part;
-	int rc;
-
-	/* For now, we don't do any of this on pmac, until I
-	 * have figured out if it's worth killing some unused stuffs
-	 * in our nvram, as Apple defined partitions use pretty much
-	 * all of the space
-	 */
-	if (machine_is(powermac))
-		return -ENOSPC;
-
-	/* see if we have an OS partition that meets our needs.
-	   will try getting the max we need.  If not we'll delete
-	   partitions and try again. */
-	list_for_each(p, &nvram_part->partition) {
-		part = list_entry(p, struct nvram_partition, partition);
-		if (part->header.signature != NVRAM_SIG_OS)
-			continue;
+	struct nvram_partition *part;
+	
+	list_for_each_entry(part, &nvram_partitions, partition) {
+		if (part->index + NVRAM_HEADER_LEN == data_index)
+			return (part->header.length - 1) * NVRAM_BLOCK_LEN;
+	}
+	return -1;
+}
 
-		if (strcmp(part->header.name, "ppc64,linux"))
-			continue;
 
-		if (part->header.length >= NVRAM_MIN_REQ) {
-			/* found our partition */
-			nvram_error_log_index = part->index + NVRAM_HEADER_LEN;
-			nvram_error_log_size = ((part->header.length - 1) *
-						NVRAM_BLOCK_LEN) - sizeof(struct err_log_info);
-			return 0;
+/**
+ * nvram_find_partition - Find an nvram partition by signature and name
+ * @name: Name of the partition or NULL for any name
+ * @sig: Signature to test against
+ * @out_size: if non-NULL, returns the size of the data part of the partition
+ */
+loff_t nvram_find_partition(const char *name, int sig, int *out_size)
+{
+	struct nvram_partition *p;
+
+	list_for_each_entry(p, &nvram_partitions, partition) {
+		if (p->header.signature == sig &&
+		    (!name || !strncmp(p->header.name, name, 12))) {
+			if (out_size)
+				*out_size = (p->header.length - 1) *
+					NVRAM_BLOCK_LEN;
+			return p->index + NVRAM_HEADER_LEN;
 		}
 	}
-	
-	/* try creating a partition with the free space we have */
-	rc = nvram_create_os_partition();
-	if (!rc) {
-		return 0;
-	}
-		
-	/* need to free up some space */
-	rc = nvram_remove_os_partition();
-	if (rc) {
-		return rc;
-	}
-	
-	/* create a partition in this new space */
-	rc = nvram_create_os_partition();
-	if (rc) {
-		printk(KERN_ERR "nvram_create_os_partition: Could not find a "
-		       "NVRAM partition large enough\n");
-		return rc;
-	}
-	
 	return 0;
 }
 
-
-static int __init nvram_scan_partitions(void)
+int __init nvram_scan_partitions(void)
 {
 	loff_t cur_index = 0;
 	struct nvram_header phead;
@@ -465,7 +451,7 @@ static int __init nvram_scan_partitions(void)
 	int total_size;
 	int err;
 
-	if (ppc_md.nvram_size == NULL)
+	if (ppc_md.nvram_size == NULL || ppc_md.nvram_size() <= 0)
 		return -ENODEV;
 	total_size = ppc_md.nvram_size();
 	
@@ -512,12 +498,16 @@ static int __init nvram_scan_partitions(void)
 		
 		memcpy(&tmp_part->header, &phead, NVRAM_HEADER_LEN);
 		tmp_part->index = cur_index;
-		list_add_tail(&tmp_part->partition, &nvram_part->partition);
+		list_add_tail(&tmp_part->partition, &nvram_partitions);
 		
 		cur_index += phead.length * NVRAM_BLOCK_LEN;
 	}
 	err = 0;
 
+#ifdef DEBUG_NVRAM
+	nvram_print_partitions("NVRAM Partitions");
+#endif
+
  out:
 	kfree(header);
 	return err;
@@ -525,9 +515,10 @@ static int __init nvram_scan_partitions(void)
 
 static int __init nvram_init(void)
 {
-	int error;
 	int rc;
 	
+	BUILD_BUG_ON(NVRAM_BLOCK_LEN != 16);
+
 	if (ppc_md.nvram_size == NULL || ppc_md.nvram_size() <= 0)
 		return  -ENODEV;
 
@@ -537,29 +528,6 @@ static int __init nvram_init(void)
 		return rc;
 	}
   	
-  	/* initialize our anchor for the nvram partition list */
-  	nvram_part = kmalloc(sizeof(struct nvram_partition), GFP_KERNEL);
-  	if (!nvram_part) {
-  		printk(KERN_ERR "nvram_init: Failed kmalloc\n");
-  		return -ENOMEM;
-  	}
-  	INIT_LIST_HEAD(&nvram_part->partition);
-  
-  	/* Get all the NVRAM partitions */
-  	error = nvram_scan_partitions();
-  	if (error) {
-  		printk(KERN_ERR "nvram_init: Failed nvram_scan_partitions\n");
-  		return error;
-  	}
-  		
-  	if(nvram_setup_partition()) 
-  		printk(KERN_WARNING "nvram_init: Could not find nvram partition"
-  		       " for nvram buffered error logging.\n");
-  
-#ifdef DEBUG_NVRAM
-	nvram_print_partitions("NVRAM Partitions");
-#endif
-
   	return rc;
 }
 
@@ -568,135 +536,6 @@ void __exit nvram_cleanup(void)
         misc_deregister( &nvram_dev );
 }
 
-
-#ifdef CONFIG_PPC_PSERIES
-
-/* nvram_write_error_log
- *
- * We need to buffer the error logs into nvram to ensure that we have
- * the failure information to decode.  If we have a severe error there
- * is no way to guarantee that the OS or the machine is in a state to
- * get back to user land and write the error to disk.  For example if
- * the SCSI device driver causes a Machine Check by writing to a bad
- * IO address, there is no way of guaranteeing that the device driver
- * is in any state that is would also be able to write the error data
- * captured to disk, thus we buffer it in NVRAM for analysis on the
- * next boot.
- *
- * In NVRAM the partition containing the error log buffer will looks like:
- * Header (in bytes):
- * +-----------+----------+--------+------------+------------------+
- * | signature | checksum | length | name       | data             |
- * |0          |1         |2      3|4         15|16        length-1|
- * +-----------+----------+--------+------------+------------------+
- *
- * The 'data' section would look like (in bytes):
- * +--------------+------------+-----------------------------------+
- * | event_logged | sequence # | error log                         |
- * |0            3|4          7|8            nvram_error_log_size-1|
- * +--------------+------------+-----------------------------------+
- *
- * event_logged: 0 if event has not been logged to syslog, 1 if it has
- * sequence #: The unique sequence # for each event. (until it wraps)
- * error log: The error log from event_scan
- */
-int nvram_write_error_log(char * buff, int length,
-                          unsigned int err_type, unsigned int error_log_cnt)
-{
-	int rc;
-	loff_t tmp_index;
-	struct err_log_info info;
-	
-	if (nvram_error_log_index == -1) {
-		return -ESPIPE;
-	}
-
-	if (length > nvram_error_log_size) {
-		length = nvram_error_log_size;
-	}
-
-	info.error_type = err_type;
-	info.seq_num = error_log_cnt;
-
-	tmp_index = nvram_error_log_index;
-
-	rc = ppc_md.nvram_write((char *)&info, sizeof(struct err_log_info), &tmp_index);
-	if (rc <= 0) {
-		printk(KERN_ERR "nvram_write_error_log: Failed nvram_write (%d)\n", rc);
-		return rc;
-	}
-
-	rc = ppc_md.nvram_write(buff, length, &tmp_index);
-	if (rc <= 0) {
-		printk(KERN_ERR "nvram_write_error_log: Failed nvram_write (%d)\n", rc);
-		return rc;
-	}
-	
-	return 0;
-}
-
-/* nvram_read_error_log
- *
- * Reads nvram for error log for at most 'length'
- */
-int nvram_read_error_log(char * buff, int length,
-                         unsigned int * err_type, unsigned int * error_log_cnt)
-{
-	int rc;
-	loff_t tmp_index;
-	struct err_log_info info;
-	
-	if (nvram_error_log_index == -1)
-		return -1;
-
-	if (length > nvram_error_log_size)
-		length = nvram_error_log_size;
-
-	tmp_index = nvram_error_log_index;
-
-	rc = ppc_md.nvram_read((char *)&info, sizeof(struct err_log_info), &tmp_index);
-	if (rc <= 0) {
-		printk(KERN_ERR "nvram_read_error_log: Failed nvram_read (%d)\n", rc);
-		return rc;
-	}
-
-	rc = ppc_md.nvram_read(buff, length, &tmp_index);
-	if (rc <= 0) {
-		printk(KERN_ERR "nvram_read_error_log: Failed nvram_read (%d)\n", rc);
-		return rc;
-	}
-
-	*error_log_cnt = info.seq_num;
-	*err_type = info.error_type;
-
-	return 0;
-}
-
-/* This doesn't actually zero anything, but it sets the event_logged
- * word to tell that this event is safely in syslog.
- */
-int nvram_clear_error_log(void)
-{
-	loff_t tmp_index;
-	int clear_word = ERR_FLAG_ALREADY_LOGGED;
-	int rc;
-
-	if (nvram_error_log_index == -1)
-		return -1;
-
-	tmp_index = nvram_error_log_index;
-	
-	rc = ppc_md.nvram_write((char *)&clear_word, sizeof(int), &tmp_index);
-	if (rc <= 0) {
-		printk(KERN_ERR "nvram_clear_error_log: Failed nvram_write (%d)\n", rc);
-		return rc;
-	}
-
-	return 0;
-}
-
-#endif /* CONFIG_PPC_PSERIES */
-
 module_init(nvram_init);
 module_exit(nvram_cleanup);
 MODULE_LICENSE("GPL");
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index d43fc65..8515776 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -193,8 +193,7 @@ int __devinit pcibios_map_io_space(struct pci_bus *bus)
 	hose->io_resource.start += io_virt_offset;
 	hose->io_resource.end += io_virt_offset;
 
-	pr_debug("  hose->io_resource=0x%016llx...0x%016llx\n",
-		 hose->io_resource.start, hose->io_resource.end);
+	pr_debug("  hose->io_resource=%pR\n", &hose->io_resource);
 
 	return 0;
 }
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index ab3e392..ef3ef56 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -186,3 +186,10 @@ EXPORT_SYMBOL(__mtdcr);
 EXPORT_SYMBOL(__mfdcr);
 #endif
 EXPORT_SYMBOL(empty_zero_page);
+
+#ifdef CONFIG_PPC64
+EXPORT_SYMBOL(__arch_hweight8);
+EXPORT_SYMBOL(__arch_hweight16);
+EXPORT_SYMBOL(__arch_hweight32);
+EXPORT_SYMBOL(__arch_hweight64);
+#endif
diff --git a/arch/powerpc/kernel/ppc_save_regs.S b/arch/powerpc/kernel/ppc_save_regs.S
index 5113bd2..e83ba3f 100644
--- a/arch/powerpc/kernel/ppc_save_regs.S
+++ b/arch/powerpc/kernel/ppc_save_regs.S
@@ -11,6 +11,7 @@
 #include <asm/processor.h>
 #include <asm/ppc_asm.h>
 #include <asm/asm-offsets.h>
+#include <asm/ptrace.h>
 
 /*
  * Grab the register values as they are now.
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index a9b3296..9065369 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -1316,6 +1316,10 @@ static int set_dac_range(struct task_struct *child,
 static long ppc_set_hwdebug(struct task_struct *child,
 		     struct ppc_hw_breakpoint *bp_info)
 {
+#ifndef CONFIG_PPC_ADV_DEBUG_REGS
+	unsigned long dabr;
+#endif
+
 	if (bp_info->version != 1)
 		return -ENOTSUPP;
 #ifdef CONFIG_PPC_ADV_DEBUG_REGS
@@ -1353,11 +1357,10 @@ static long ppc_set_hwdebug(struct task_struct *child,
 	/*
 	 * We only support one data breakpoint
 	 */
-	if (((bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_RW) == 0) ||
-	    ((bp_info->trigger_type & ~PPC_BREAKPOINT_TRIGGER_RW) != 0) ||
-	    (bp_info->trigger_type != PPC_BREAKPOINT_TRIGGER_WRITE) ||
-	    (bp_info->addr_mode != PPC_BREAKPOINT_MODE_EXACT) ||
-	    (bp_info->condition_mode != PPC_BREAKPOINT_CONDITION_NONE))
+	if ((bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_RW) == 0 ||
+	    (bp_info->trigger_type & ~PPC_BREAKPOINT_TRIGGER_RW) != 0 ||
+	    bp_info->addr_mode != PPC_BREAKPOINT_MODE_EXACT ||
+	    bp_info->condition_mode != PPC_BREAKPOINT_CONDITION_NONE)
 		return -EINVAL;
 
 	if (child->thread.dabr)
@@ -1366,7 +1369,14 @@ static long ppc_set_hwdebug(struct task_struct *child,
 	if ((unsigned long)bp_info->addr >= TASK_SIZE)
 		return -EIO;
 
-	child->thread.dabr = (unsigned long)bp_info->addr;
+	dabr = (unsigned long)bp_info->addr & ~7UL;
+	dabr |= DABR_TRANSLATION;
+	if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_READ)
+		dabr |= DABR_DATA_READ;
+	if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_WRITE)
+		dabr |= DABR_DATA_WRITE;
+
+	child->thread.dabr = dabr;
 
 	return 1;
 #endif /* !CONFIG_PPC_ADV_DEBUG_DVCS */
diff --git a/arch/powerpc/kernel/ptrace32.c b/arch/powerpc/kernel/ptrace32.c
index 8a6daf4..69c4be9 100644
--- a/arch/powerpc/kernel/ptrace32.c
+++ b/arch/powerpc/kernel/ptrace32.c
@@ -280,7 +280,11 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
 		/* We only support one DABR and no IABRS at the moment */
 		if (addr > 0)
 			break;
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
+		ret = put_user(child->thread.dac1, (u32 __user *)data);
+#else
 		ret = put_user(child->thread.dabr, (u32 __user *)data);
+#endif
 		break;
 	}
 
@@ -312,6 +316,9 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
 	case PTRACE_SET_DEBUGREG:
 	case PTRACE_SYSCALL:
 	case PTRACE_CONT:
+	case PPC_PTRACE_GETHWDBGINFO:
+	case PPC_PTRACE_SETHWDEBUG:
+	case PPC_PTRACE_DELHWDEBUG:
 		ret = arch_ptrace(child, request, addr, data);
 		break;
 
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 8fe8bc6..2097f2b 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -41,6 +41,7 @@
 #include <asm/atomic.h>
 #include <asm/time.h>
 #include <asm/mmu.h>
+#include <asm/topology.h>
 
 struct rtas_t rtas = {
 	.lock = __ARCH_SPIN_LOCK_UNLOCKED
@@ -713,6 +714,7 @@ static int __rtas_suspend_last_cpu(struct rtas_suspend_me_data *data, int wake_w
 	int cpu;
 
 	slb_set_size(SLB_MIN_SIZE);
+	stop_topology_update();
 	printk(KERN_DEBUG "calling ibm,suspend-me on cpu %i\n", smp_processor_id());
 
 	while (rc == H_MULTI_THREADS_ACTIVE && !atomic_read(&data->done) &&
@@ -728,6 +730,7 @@ static int __rtas_suspend_last_cpu(struct rtas_suspend_me_data *data, int wake_w
 		rc = atomic_read(&data->error);
 
 	atomic_set(&data->error, rc);
+	start_topology_update();
 
 	if (wake_when_done) {
 		atomic_set(&data->done, 1);
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index ce6f61c..5a0401f 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -437,8 +437,8 @@ static void __init irqstack_early_init(void)
 	unsigned int i;
 
 	/*
-	 * interrupt stacks must be under 256MB, we cannot afford to take
-	 * SLB misses on them.
+	 * Interrupt stacks must be in the first segment since we
+	 * cannot afford to take SLB misses on them.
 	 */
 	for_each_possible_cpu(i) {
 		softirq_ctx[i] = (struct thread_info *)
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 68034bb..9813605 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -466,7 +466,20 @@ out:
 	return id;
 }
 
-/* Must be called when no change can occur to cpu_present_mask,
+/* Helper routines for cpu to core mapping */
+int cpu_core_index_of_thread(int cpu)
+{
+	return cpu >> threads_shift;
+}
+EXPORT_SYMBOL_GPL(cpu_core_index_of_thread);
+
+int cpu_first_thread_of_core(int core)
+{
+	return core << threads_shift;
+}
+EXPORT_SYMBOL_GPL(cpu_first_thread_of_core);
+
+/* Must be called when no change can occur to cpu_present_map,
  * i.e. during cpu online or offline.
  */
 static struct device_node *cpu_to_l2cache(int cpu)
@@ -514,7 +527,7 @@ int __devinit start_secondary(void *unused)
 	notify_cpu_starting(cpu);
 	set_cpu_online(cpu, true);
 	/* Update sibling maps */
-	base = cpu_first_thread_in_core(cpu);
+	base = cpu_first_thread_sibling(cpu);
 	for (i = 0; i < threads_per_core; i++) {
 		if (cpu_is_offline(base + i))
 			continue;
@@ -600,7 +613,7 @@ int __cpu_disable(void)
 		return err;
 
 	/* Update sibling maps */
-	base = cpu_first_thread_in_core(cpu);
+	base = cpu_first_thread_sibling(cpu);
 	for (i = 0; i < threads_per_core; i++) {
 		cpumask_clear_cpu(cpu, cpu_sibling_mask(base + i));
 		cpumask_clear_cpu(base + i, cpu_sibling_mask(cpu));
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 0104069..09e4dea 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -155,7 +155,7 @@ EXPORT_SYMBOL_GPL(rtc_lock);
 
 static u64 tb_to_ns_scale __read_mostly;
 static unsigned tb_to_ns_shift __read_mostly;
-static unsigned long boot_tb __read_mostly;
+static u64 boot_tb __read_mostly;
 
 extern struct timezone sys_tz;
 static long timezone_offset;
diff --git a/arch/powerpc/kernel/vector.S b/arch/powerpc/kernel/vector.S
index fe46048..9de6f39 100644
--- a/arch/powerpc/kernel/vector.S
+++ b/arch/powerpc/kernel/vector.S
@@ -5,6 +5,7 @@
 #include <asm/cputable.h>
 #include <asm/thread_info.h>
 #include <asm/page.h>
+#include <asm/ptrace.h>
 
 /*
  * load_up_altivec(unused, unused, tsk)
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index 441d2a7..1b695fd 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -600,6 +600,11 @@ static void vio_dma_iommu_unmap_sg(struct device *dev,
 	vio_cmo_dealloc(viodev, alloc_size);
 }
 
+static int vio_dma_iommu_dma_supported(struct device *dev, u64 mask)
+{
+        return dma_iommu_ops.dma_supported(dev, mask);
+}
+
 struct dma_map_ops vio_dma_mapping_ops = {
 	.alloc_coherent = vio_dma_iommu_alloc_coherent,
 	.free_coherent  = vio_dma_iommu_free_coherent,
@@ -607,6 +612,7 @@ struct dma_map_ops vio_dma_mapping_ops = {
 	.unmap_sg       = vio_dma_iommu_unmap_sg,
 	.map_page       = vio_dma_iommu_map_page,
 	.unmap_page     = vio_dma_iommu_unmap_page,
+	.dma_supported  = vio_dma_iommu_dma_supported,
 
 };
 
@@ -858,8 +864,7 @@ static void vio_cmo_bus_remove(struct vio_dev *viodev)
 
 static void vio_cmo_set_dma_ops(struct vio_dev *viodev)
 {
-	vio_dma_mapping_ops.dma_supported = dma_iommu_ops.dma_supported;
-	viodev->dev.archdata.dma_ops = &vio_dma_mapping_ops;
+	set_dma_ops(&viodev->dev, &vio_dma_mapping_ops);
 }
 
 /**
@@ -1244,7 +1249,7 @@ struct vio_dev *vio_register_device_node(struct device_node *of_node)
 	if (firmware_has_feature(FW_FEATURE_CMO))
 		vio_cmo_set_dma_ops(viodev);
 	else
-		viodev->dev.archdata.dma_ops = &dma_iommu_ops;
+		set_dma_ops(&viodev->dev, &dma_iommu_ops);
 	set_iommu_table_base(&viodev->dev, vio_build_iommu_table(viodev));
 	set_dev_node(&viodev->dev, of_node_to_nid(of_node));
 
@@ -1252,6 +1257,10 @@ struct vio_dev *vio_register_device_node(struct device_node *of_node)
 	viodev->dev.parent = &vio_bus_device.dev;
 	viodev->dev.bus = &vio_bus_type;
 	viodev->dev.release = vio_dev_release;
+        /* needed to ensure proper operation of coherent allocations
+         * later, in case driver doesn't set it explicitly */
+        dma_set_mask(&viodev->dev, DMA_BIT_MASK(64));
+        dma_set_coherent_mask(&viodev->dev, DMA_BIT_MASK(64));
 
 	/* register with generic device framework */
 	if (device_register(&viodev->dev)) {