Merge branch 'linux-2.6'

19 files changed, 583 insertions, 168 deletions

diff --git a/arch/sparc64/defconfig b/arch/sparc64/defconfig
index 250958d1e3c..9d4bd222949 100644
--- a/arch/sparc64/defconfig
+++ b/arch/sparc64/defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.25-rc1
-# Sun Feb 17 22:44:12 2008
+# Linux kernel version: 2.6.25-rc3
+# Wed Mar 26 04:33:35 2008
 #
 CONFIG_SPARC=y
 CONFIG_SPARC64=y
@@ -55,9 +55,11 @@ CONFIG_POSIX_MQUEUE=y
 # CONFIG_IKCONFIG is not set
 CONFIG_LOG_BUF_SHIFT=18
 # CONFIG_CGROUPS is not set
+CONFIG_GROUP_SCHED=y
 CONFIG_FAIR_GROUP_SCHED=y
-CONFIG_FAIR_USER_SCHED=y
-# CONFIG_FAIR_CGROUP_SCHED is not set
+CONFIG_RT_GROUP_SCHED=y
+CONFIG_USER_SCHED=y
+# CONFIG_CGROUP_SCHED is not set
 CONFIG_SYSFS_DEPRECATED=y
 CONFIG_RELAY=y
 CONFIG_NAMESPACES=y
@@ -482,6 +484,7 @@ CONFIG_SCSI_LOWLEVEL=y
 # CONFIG_SCSI_IPS is not set
 # CONFIG_SCSI_INITIO is not set
 # CONFIG_SCSI_INIA100 is not set
+# CONFIG_SCSI_MVSAS is not set
 # CONFIG_SCSI_STEX is not set
 # CONFIG_SCSI_SYM53C8XX_2 is not set
 # CONFIG_SCSI_QLOGIC_1280 is not set
@@ -810,6 +813,7 @@ CONFIG_HWMON=y
 # CONFIG_SENSORS_ADM1031 is not set
 # CONFIG_SENSORS_ADM9240 is not set
 # CONFIG_SENSORS_ADT7470 is not set
+# CONFIG_SENSORS_ADT7473 is not set
 # CONFIG_SENSORS_ATXP1 is not set
 # CONFIG_SENSORS_DS1621 is not set
 # CONFIG_SENSORS_I5K_AMB is not set
diff --git a/arch/sparc64/kernel/cpu.c b/arch/sparc64/kernel/cpu.c
index dd5d28e3d79..0097c08dc60 100644
--- a/arch/sparc64/kernel/cpu.c
+++ b/arch/sparc64/kernel/cpu.c
@@ -15,6 +15,8 @@
 #include <asm/spitfire.h>
 #include <asm/oplib.h>
 
+#include "entry.h"
+
 DEFINE_PER_CPU(cpuinfo_sparc, __cpu_data) = { 0 };
 
 struct cpu_iu_info {
@@ -65,8 +67,6 @@ static struct cpu_iu_info linux_sparc_chips[] = {
 char *sparc_cpu_type;
 char *sparc_fpu_type;
 
-unsigned int fsr_storage;
-
 static void __init sun4v_cpu_probe(void)
 {
 	switch (sun4v_chip_type) {
@@ -94,8 +94,10 @@ void __init cpu_probe(void)
 	unsigned long ver, fpu_vers, manuf, impl, fprs;
 	int i;
 	
-	if (tlb_type == hypervisor)
-		return sun4v_cpu_probe();
+	if (tlb_type == hypervisor) {
+		sun4v_cpu_probe();
+		return;
+	}
 
 	fprs = fprs_read();
 	fprs_write(FPRS_FEF);
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index 6be4d2d2904..49eca4b1cf2 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -1705,6 +1705,36 @@ __flushw_user:
 2:	retl
 	 nop
 
+	/* Flush %fp and %i7 to the stack for all register
+	 * windows active inside of the cpu.  This allows
+	 * show_stack_trace() to avoid using an expensive
+	 * 'flushw'.
+	 */
+	.globl		stack_trace_flush
+	.type		stack_trace_flush,#function
+stack_trace_flush:
+	rdpr		%pstate, %o0
+	wrpr		%o0, PSTATE_IE, %pstate
+
+	rdpr		%cwp, %g1
+	rdpr		%canrestore, %g2
+	sub		%g1, 1, %g3
+
+1:	brz,pn		%g2, 2f
+	 sub		%g2, 1, %g2
+	wrpr		%g3, %cwp
+	stx		%fp, [%sp + STACK_BIAS + RW_V9_I6]
+	stx		%i7, [%sp + STACK_BIAS + RW_V9_I7]
+	ba,pt		%xcc, 1b
+	 sub		%g3, 1, %g3
+
+2:	wrpr		%g1, %cwp
+	wrpr		%o0, %pstate
+
+	retl
+	 nop
+	.size		stack_trace_flush,.-stack_trace_flush
+
 #ifdef CONFIG_SMP
 	.globl		hard_smp_processor_id
 hard_smp_processor_id:
diff --git a/arch/sparc64/kernel/entry.h b/arch/sparc64/kernel/entry.h
new file mode 100644
index 00000000000..4a91e9c6d31
--- /dev/null
+++ b/arch/sparc64/kernel/entry.h
@@ -0,0 +1,196 @@
+#ifndef _ENTRY_H
+#define _ENTRY_H
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+
+extern char *sparc_cpu_type;
+extern char *sparc_fpu_type;
+
+extern void __init per_cpu_patch(void);
+extern void __init sun4v_patch(void);
+extern void __init boot_cpu_id_too_large(int cpu);
+extern unsigned int dcache_parity_tl1_occurred;
+extern unsigned int icache_parity_tl1_occurred;
+
+extern asmlinkage void update_perfctrs(void);
+extern asmlinkage void sparc_breakpoint(struct pt_regs *regs);
+extern void timer_interrupt(int irq, struct pt_regs *regs);
+
+extern void do_notify_resume(struct pt_regs *regs,
+			     unsigned long orig_i0,
+			     int restart_syscall,
+			     unsigned long thread_info_flags);
+
+extern asmlinkage void syscall_trace(struct pt_regs *regs,
+				     int syscall_exit_p);
+
+extern void bad_trap_tl1(struct pt_regs *regs, long lvl);
+
+extern void do_fpe_common(struct pt_regs *regs);
+extern void do_fpieee(struct pt_regs *regs);
+extern void do_fpother(struct pt_regs *regs);
+extern void do_tof(struct pt_regs *regs);
+extern void do_div0(struct pt_regs *regs);
+extern void do_illegal_instruction(struct pt_regs *regs);
+extern void mem_address_unaligned(struct pt_regs *regs,
+				  unsigned long sfar,
+				  unsigned long sfsr);
+extern void sun4v_do_mna(struct pt_regs *regs,
+			 unsigned long addr,
+			 unsigned long type_ctx);
+extern void do_privop(struct pt_regs *regs);
+extern void do_privact(struct pt_regs *regs);
+extern void do_cee(struct pt_regs *regs);
+extern void do_cee_tl1(struct pt_regs *regs);
+extern void do_dae_tl1(struct pt_regs *regs);
+extern void do_iae_tl1(struct pt_regs *regs);
+extern void do_div0_tl1(struct pt_regs *regs);
+extern void do_fpdis_tl1(struct pt_regs *regs);
+extern void do_fpieee_tl1(struct pt_regs *regs);
+extern void do_fpother_tl1(struct pt_regs *regs);
+extern void do_ill_tl1(struct pt_regs *regs);
+extern void do_irq_tl1(struct pt_regs *regs);
+extern void do_lddfmna_tl1(struct pt_regs *regs);
+extern void do_stdfmna_tl1(struct pt_regs *regs);
+extern void do_paw(struct pt_regs *regs);
+extern void do_paw_tl1(struct pt_regs *regs);
+extern void do_vaw(struct pt_regs *regs);
+extern void do_vaw_tl1(struct pt_regs *regs);
+extern void do_tof_tl1(struct pt_regs *regs);
+extern void do_getpsr(struct pt_regs *regs);
+
+extern void spitfire_insn_access_exception(struct pt_regs *regs,
+					   unsigned long sfsr,
+					   unsigned long sfar);
+extern void spitfire_insn_access_exception_tl1(struct pt_regs *regs,
+					       unsigned long sfsr,
+					       unsigned long sfar);
+extern void spitfire_data_access_exception(struct pt_regs *regs,
+					   unsigned long sfsr,
+					   unsigned long sfar);
+extern void spitfire_data_access_exception_tl1(struct pt_regs *regs,
+					       unsigned long sfsr,
+					       unsigned long sfar);
+extern void spitfire_access_error(struct pt_regs *regs,
+				  unsigned long status_encoded,
+				  unsigned long afar);
+
+extern void cheetah_fecc_handler(struct pt_regs *regs,
+				 unsigned long afsr,
+				 unsigned long afar);
+extern void cheetah_cee_handler(struct pt_regs *regs,
+				unsigned long afsr,
+				unsigned long afar);
+extern void cheetah_deferred_handler(struct pt_regs *regs,
+				     unsigned long afsr,
+				     unsigned long afar);
+extern void cheetah_plus_parity_error(int type, struct pt_regs *regs);
+
+extern void sun4v_insn_access_exception(struct pt_regs *regs,
+					unsigned long addr,
+					unsigned long type_ctx);
+extern void sun4v_insn_access_exception_tl1(struct pt_regs *regs,
+					    unsigned long addr,
+					    unsigned long type_ctx);
+extern void sun4v_data_access_exception(struct pt_regs *regs,
+					unsigned long addr,
+					unsigned long type_ctx);
+extern void sun4v_data_access_exception_tl1(struct pt_regs *regs,
+					    unsigned long addr,
+					    unsigned long type_ctx);
+extern void sun4v_resum_error(struct pt_regs *regs,
+			      unsigned long offset);
+extern void sun4v_resum_overflow(struct pt_regs *regs);
+extern void sun4v_nonresum_error(struct pt_regs *regs,
+				 unsigned long offset);
+extern void sun4v_nonresum_overflow(struct pt_regs *regs);
+
+extern unsigned long sun4v_err_itlb_vaddr;
+extern unsigned long sun4v_err_itlb_ctx;
+extern unsigned long sun4v_err_itlb_pte;
+extern unsigned long sun4v_err_itlb_error;
+
+extern void sun4v_itlb_error_report(struct pt_regs *regs, int tl);
+
+extern unsigned long sun4v_err_dtlb_vaddr;
+extern unsigned long sun4v_err_dtlb_ctx;
+extern unsigned long sun4v_err_dtlb_pte;
+extern unsigned long sun4v_err_dtlb_error;
+
+extern void sun4v_dtlb_error_report(struct pt_regs *regs, int tl);
+extern void hypervisor_tlbop_error(unsigned long err,
+				   unsigned long op);
+extern void hypervisor_tlbop_error_xcall(unsigned long err,
+					 unsigned long op);
+
+/* WARNING: The error trap handlers in assembly know the precise
+ *	    layout of the following structure.
+ *
+ * C-level handlers in traps.c use this information to log the
+ * error and then determine how to recover (if possible).
+ */
+struct cheetah_err_info {
+/*0x00*/u64 afsr;
+/*0x08*/u64 afar;
+
+	/* D-cache state */
+/*0x10*/u64 dcache_data[4];	/* The actual data	*/
+/*0x30*/u64 dcache_index;	/* D-cache index	*/
+/*0x38*/u64 dcache_tag;		/* D-cache tag/valid	*/
+/*0x40*/u64 dcache_utag;	/* D-cache microtag	*/
+/*0x48*/u64 dcache_stag;	/* D-cache snooptag	*/
+
+	/* I-cache state */
+/*0x50*/u64 icache_data[8];	/* The actual insns + predecode	*/
+/*0x90*/u64 icache_index;	/* I-cache index	*/
+/*0x98*/u64 icache_tag;		/* I-cache phys tag	*/
+/*0xa0*/u64 icache_utag;	/* I-cache microtag	*/
+/*0xa8*/u64 icache_stag;	/* I-cache snooptag	*/
+/*0xb0*/u64 icache_upper;	/* I-cache upper-tag	*/
+/*0xb8*/u64 icache_lower;	/* I-cache lower-tag	*/
+
+	/* E-cache state */
+/*0xc0*/u64 ecache_data[4];	/* 32 bytes from staging registers */
+/*0xe0*/u64 ecache_index;	/* E-cache index	*/
+/*0xe8*/u64 ecache_tag;		/* E-cache tag/state	*/
+
+/*0xf0*/u64 __pad[32 - 30];
+};
+#define CHAFSR_INVALID		((u64)-1L)
+
+/* This is allocated at boot time based upon the largest hardware
+ * cpu ID in the system.  We allocate two entries per cpu, one for
+ * TL==0 logging and one for TL >= 1 logging.
+ */
+extern struct cheetah_err_info *cheetah_error_log;
+
+/* UPA nodes send interrupt packet to UltraSparc with first data reg
+ * value low 5 (7 on Starfire) bits holding the IRQ identifier being
+ * delivered.  We must translate this into a non-vector IRQ so we can
+ * set the softint on this cpu.
+ *
+ * To make processing these packets efficient and race free we use
+ * an array of irq buckets below.  The interrupt vector handler in
+ * entry.S feeds incoming packets into per-cpu pil-indexed lists.
+ *
+ * If you make changes to ino_bucket, please update hand coded assembler
+ * of the vectored interrupt trap handler(s) in entry.S and sun4v_ivec.S
+ */
+struct ino_bucket {
+/*0x00*/unsigned long __irq_chain_pa;
+
+	/* Virtual interrupt number assigned to this INO.  */
+/*0x08*/unsigned int __virt_irq;
+/*0x0c*/unsigned int __pad;
+};
+
+extern struct ino_bucket *ivector_table;
+extern unsigned long ivector_table_pa;
+
+extern void handler_irq(int irq, struct pt_regs *regs);
+extern void init_irqwork_curcpu(void);
+extern void __cpuinit sun4v_register_mondo_queues(int this_cpu);
+
+#endif /* _ENTRY_H */
diff --git a/arch/sparc64/kernel/iommu.c b/arch/sparc64/kernel/iommu.c
index fbaab3497bf..756fa24eeef 100644
--- a/arch/sparc64/kernel/iommu.c
+++ b/arch/sparc64/kernel/iommu.c
@@ -516,9 +516,11 @@ static int dma_4u_map_sg(struct device *dev, struct scatterlist *sglist,
 	unsigned long flags, handle, prot, ctx;
 	dma_addr_t dma_next = 0, dma_addr;
 	unsigned int max_seg_size;
+	unsigned long seg_boundary_size;
 	int outcount, incount, i;
 	struct strbuf *strbuf;
 	struct iommu *iommu;
+	unsigned long base_shift;
 
 	BUG_ON(direction == DMA_NONE);
 
@@ -549,8 +551,11 @@ static int dma_4u_map_sg(struct device *dev, struct scatterlist *sglist,
 	outs->dma_length = 0;
 
 	max_seg_size = dma_get_max_seg_size(dev);
+	seg_boundary_size = ALIGN(dma_get_seg_boundary(dev) + 1,
+				  IO_PAGE_SIZE) >> IO_PAGE_SHIFT;
+	base_shift = iommu->page_table_map_base >> IO_PAGE_SHIFT;
 	for_each_sg(sglist, s, nelems, i) {
-		unsigned long paddr, npages, entry, slen;
+		unsigned long paddr, npages, entry, out_entry = 0, slen;
 		iopte_t *base;
 
 		slen = s->length;
@@ -593,7 +598,9 @@ static int dma_4u_map_sg(struct device *dev, struct scatterlist *sglist,
 			 * - allocated dma_addr isn't contiguous to previous allocation
 			 */
 			if ((dma_addr != dma_next) ||
-			    (outs->dma_length + s->length > max_seg_size)) {
+			    (outs->dma_length + s->length > max_seg_size) ||
+			    (is_span_boundary(out_entry, base_shift,
+					      seg_boundary_size, outs, s))) {
 				/* Can't merge: create a new segment */
 				segstart = s;
 				outcount++;
@@ -607,6 +614,7 @@ static int dma_4u_map_sg(struct device *dev, struct scatterlist *sglist,
 			/* This is a new segment, fill entries */
 			outs->dma_address = dma_addr;
 			outs->dma_length = slen;
+			out_entry = entry;
 		}
 
 		/* Calculate next page pointer for contiguous check */
@@ -626,7 +634,7 @@ static int dma_4u_map_sg(struct device *dev, struct scatterlist *sglist,
 iommu_map_failed:
 	for_each_sg(sglist, s, nelems, i) {
 		if (s->dma_length != 0) {
-			unsigned long vaddr, npages, entry, i;
+			unsigned long vaddr, npages, entry, j;
 			iopte_t *base;
 
 			vaddr = s->dma_address & IO_PAGE_MASK;
@@ -637,8 +645,8 @@ iommu_map_failed:
 				>> IO_PAGE_SHIFT;
 			base = iommu->page_table + entry;
 
-			for (i = 0; i < npages; i++)
-				iopte_make_dummy(iommu, base + i);
+			for (j = 0; j < npages; j++)
+				iopte_make_dummy(iommu, base + j);
 
 			s->dma_address = DMA_ERROR_CODE;
 			s->dma_length = 0;
@@ -803,7 +811,7 @@ static void dma_4u_sync_sg_for_cpu(struct device *dev,
 	spin_unlock_irqrestore(&iommu->lock, flags);
 }
 
-const struct dma_ops sun4u_dma_ops = {
+static const struct dma_ops sun4u_dma_ops = {
 	.alloc_coherent		= dma_4u_alloc_coherent,
 	.free_coherent		= dma_4u_free_coherent,
 	.map_single		= dma_4u_map_single,
diff --git a/arch/sparc64/kernel/iommu_common.h b/arch/sparc64/kernel/iommu_common.h
index 0713bd58499..f3575a614fa 100644
--- a/arch/sparc64/kernel/iommu_common.h
+++ b/arch/sparc64/kernel/iommu_common.h
@@ -12,6 +12,7 @@
 #include <linux/mm.h>
 #include <linux/scatterlist.h>
 #include <linux/device.h>
+#include <linux/iommu-helper.h>
 
 #include <asm/iommu.h>
 #include <asm/scatterlist.h>
@@ -45,17 +46,16 @@ static inline unsigned long iommu_num_pages(unsigned long vaddr,
 	return npages;
 }
 
-static inline unsigned long calc_npages(struct scatterlist *sglist, int nelems)
+static inline int is_span_boundary(unsigned long entry,
+				   unsigned long shift,
+				   unsigned long boundary_size,
+				   struct scatterlist *outs,
+				   struct scatterlist *sg)
 {
-	unsigned long i, npages = 0;
-	struct scatterlist *sg;
+	unsigned long paddr = SG_ENT_PHYS_ADDRESS(outs);
+	int nr = iommu_num_pages(paddr, outs->dma_length + sg->length);
 
-	for_each_sg(sglist, sg, nelems, i) {
-		unsigned long paddr = SG_ENT_PHYS_ADDRESS(sg);
-		npages += iommu_num_pages(paddr, sg->length);
-	}
-
-	return npages;
+	return iommu_is_span_boundary(entry, nr, shift, boundary_size);
 }
 
 extern unsigned long iommu_range_alloc(struct device *dev,
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index 5ec06c8c7fe..eb88bd6e674 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -44,27 +44,10 @@
 #include <asm/hypervisor.h>
 #include <asm/cacheflush.h>
 
-/* UPA nodes send interrupt packet to UltraSparc with first data reg
- * value low 5 (7 on Starfire) bits holding the IRQ identifier being
- * delivered.  We must translate this into a non-vector IRQ so we can
- * set the softint on this cpu.
- *
- * To make processing these packets efficient and race free we use
- * an array of irq buckets below.  The interrupt vector handler in
- * entry.S feeds incoming packets into per-cpu pil-indexed lists.
- *
- * If you make changes to ino_bucket, please update hand coded assembler
- * of the vectored interrupt trap handler(s) in entry.S and sun4v_ivec.S
- */
-struct ino_bucket {
-/*0x00*/unsigned long __irq_chain_pa;
-
-	/* Virtual interrupt number assigned to this INO.  */
-/*0x08*/unsigned int __virt_irq;
-/*0x0c*/unsigned int __pad;
-};
+#include "entry.h"
 
 #define NUM_IVECS	(IMAP_INR + 1)
+
 struct ino_bucket *ivector_table;
 unsigned long ivector_table_pa;
 
diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c
index ddca6c6c0b4..01839706bd5 100644
--- a/arch/sparc64/kernel/pci_sun4v.c
+++ b/arch/sparc64/kernel/pci_sun4v.c
@@ -335,8 +335,10 @@ static int dma_4v_map_sg(struct device *dev, struct scatterlist *sglist,
 	unsigned long flags, handle, prot;
 	dma_addr_t dma_next = 0, dma_addr;
 	unsigned int max_seg_size;
+	unsigned long seg_boundary_size;
 	int outcount, incount, i;
 	struct iommu *iommu;
+	unsigned long base_shift;
 	long err;
 
 	BUG_ON(direction == DMA_NONE);
@@ -362,8 +364,11 @@ static int dma_4v_map_sg(struct device *dev, struct scatterlist *sglist,
 	iommu_batch_start(dev, prot, ~0UL);
 
 	max_seg_size = dma_get_max_seg_size(dev);
+	seg_boundary_size = ALIGN(dma_get_seg_boundary(dev) + 1,
+				  IO_PAGE_SIZE) >> IO_PAGE_SHIFT;
+	base_shift = iommu->page_table_map_base >> IO_PAGE_SHIFT;
 	for_each_sg(sglist, s, nelems, i) {
-		unsigned long paddr, npages, entry, slen;
+		unsigned long paddr, npages, entry, out_entry = 0, slen;
 
 		slen = s->length;
 		/* Sanity check */
@@ -406,7 +411,9 @@ static int dma_4v_map_sg(struct device *dev, struct scatterlist *sglist,
 			 * - allocated dma_addr isn't contiguous to previous allocation
 			 */
 			if ((dma_addr != dma_next) ||
-			    (outs->dma_length + s->length > max_seg_size)) {
+			    (outs->dma_length + s->length > max_seg_size) ||
+			    (is_span_boundary(out_entry, base_shift,
+					      seg_boundary_size, outs, s))) {
 				/* Can't merge: create a new segment */
 				segstart = s;
 				outcount++;
@@ -420,6 +427,7 @@ static int dma_4v_map_sg(struct device *dev, struct scatterlist *sglist,
 			/* This is a new segment, fill entries */
 			outs->dma_address = dma_addr;
 			outs->dma_length = slen;
+			out_entry = entry;
 		}
 
 		/* Calculate next page pointer for contiguous check */
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index 9a1ba1fe859..e9fc0aa2da3 100644
--- a/arch/sparc64/kernel/ptrace.c
+++ b/arch/sparc64/kernel/ptrace.c
@@ -35,6 +35,9 @@
 #include <asm/spitfire.h>
 #include <asm/page.h>
 #include <asm/cpudata.h>
+#include <asm/cacheflush.h>
+
+#include "entry.h"
 
 /* #define ALLOW_INIT_TRACING */
 
@@ -67,6 +70,8 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
 	if (tlb_type == hypervisor)
 		return;
 
+	preempt_disable();
+
 #ifdef DCACHE_ALIASING_POSSIBLE
 	/* If bit 13 of the kernel address we used to access the
 	 * user page is the same as the virtual address that page
@@ -105,6 +110,87 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
 		for (; start < end; start += icache_line_size)
 			flushi(start);
 	}
+
+	preempt_enable();
+}
+
+static int get_from_target(struct task_struct *target, unsigned long uaddr,
+			   void *kbuf, int len)
+{
+	if (target == current) {
+		if (copy_from_user(kbuf, (void __user *) uaddr, len))
+			return -EFAULT;
+	} else {
+		int len2 = access_process_vm(target, uaddr, kbuf, len, 0);
+		if (len2 != len)
+			return -EFAULT;
+	}
+	return 0;
+}
+
+static int set_to_target(struct task_struct *target, unsigned long uaddr,
+			 void *kbuf, int len)
+{
+	if (target == current) {
+		if (copy_to_user((void __user *) uaddr, kbuf, len))
+			return -EFAULT;
+	} else {
+		int len2 = access_process_vm(target, uaddr, kbuf, len, 1);
+		if (len2 != len)
+			return -EFAULT;
+	}
+	return 0;
+}
+
+static int regwindow64_get(struct task_struct *target,
+			   const struct pt_regs *regs,
+			   struct reg_window *wbuf)
+{
+	unsigned long rw_addr = regs->u_regs[UREG_I6];
+
+	if (test_tsk_thread_flag(current, TIF_32BIT)) {
+		struct reg_window32 win32;
+		int i;
+
+		if (get_from_target(target, rw_addr, &win32, sizeof(win32)))
+			return -EFAULT;
+		for (i = 0; i < 8; i++)
+			wbuf->locals[i] = win32.locals[i];
+		for (i = 0; i < 8; i++)
+			wbuf->ins[i] = win32.ins[i];
+	} else {
+		rw_addr += STACK_BIAS;
+		if (get_from_target(target, rw_addr, wbuf, sizeof(*wbuf)))
+			return -EFAULT;
+	}
+
+	return 0;
+}
+
+static int regwindow64_set(struct task_struct *target,
+			   const struct pt_regs *regs,
+			   struct reg_window *wbuf)
+{
+	unsigned long rw_addr = regs->u_regs[UREG_I6];
+
+	if (test_tsk_thread_flag(current, TIF_32BIT)) {
+		struct reg_window32 win32;
+		int i;
+
+		for (i = 0; i < 8; i++)
+			win32.locals[i] = wbuf->locals[i];
+		for (i = 0; i < 8; i++)
+			win32.ins[i] = wbuf->ins[i];
+
+		if (set_to_target(target, rw_addr, &win32, sizeof(win32)))
+			return -EFAULT;
+	} else {
+		rw_addr += STACK_BIAS;
+		if (set_to_target(target, rw_addr, wbuf, sizeof(*wbuf)))
+			return -EFAULT;
+	}
+
+	return 0;
 }
 
 enum sparc_regset {
@@ -126,16 +212,13 @@ static int genregs64_get(struct task_struct *target,
 	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
 				  regs->u_regs,
 				  0, 16 * sizeof(u64));
-	if (!ret) {
-		unsigned long __user *reg_window = (unsigned long __user *)
-			(regs->u_regs[UREG_I6] + STACK_BIAS);
-		unsigned long window[16];
+	if (!ret && count && pos < (32 * sizeof(u64))) {
+		struct reg_window window;
 
-		if (copy_from_user(window, reg_window, sizeof(window)))
+		if (regwindow64_get(target, regs, &window))
 			return -EFAULT;
-
 		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
-					  window,
+					  &window,
 					  16 * sizeof(u64),
 					  32 * sizeof(u64));
 	}
@@ -157,10 +240,11 @@ static int genregs64_get(struct task_struct *target,
 					  36 * sizeof(u64));
 	}
 
-	if (!ret)
+	if (!ret) {
 		ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
 					       36 * sizeof(u64), -1);
 
+	}
 	return ret;
 }
 
@@ -178,20 +262,19 @@ static int genregs64_set(struct task_struct *target,
 	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
 				 regs->u_regs,
 				 0, 16 * sizeof(u64));
-	if (!ret && count > 0) {
-		unsigned long __user *reg_window = (unsigned long __user *)
-			(regs->u_regs[UREG_I6] + STACK_BIAS);
-		unsigned long window[16];
+	if (!ret && count && pos < (32 * sizeof(u64))) {
+		struct reg_window window;
 
-		if (copy_from_user(window, reg_window, sizeof(window)))
+		if (regwindow64_get(target, regs, &window))
 			return -EFAULT;
 
 		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
-					 window,
+					 &window,
 					 16 * sizeof(u64),
 					 32 * sizeof(u64));
+
 		if (!ret &&
-		    copy_to_user(reg_window, window, sizeof(window)))
+		    regwindow64_set(target, regs, &window))
 			return -EFAULT;
 	}
 
@@ -382,6 +465,7 @@ static const struct user_regset_view user_sparc64_view = {
 	.regsets = sparc64_regsets, .n = ARRAY_SIZE(sparc64_regsets)
 };
 
+#ifdef CONFIG_COMPAT
 static int genregs32_get(struct task_struct *target,
 			 const struct user_regset *regset,
 			 unsigned int pos, unsigned int count,
@@ -404,9 +488,22 @@ static int genregs32_get(struct task_struct *target,
 			*k++ = regs->u_regs[pos++];
 
 		reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
-		for (; count > 0 && pos < 32; count--) {
-			if (get_user(*k++, &reg_window[pos++]))
-				return -EFAULT;
+		if (target == current) {
+			for (; count > 0 && pos < 32; count--) {
+				if (get_user(*k++, &reg_window[pos++]))
+					return -EFAULT;
+			}
+		} else {
+			for (; count > 0 && pos < 32; count--) {
+				if (access_process_vm(target,
+						      (unsigned long)
+						      &reg_window[pos],
+						      k, sizeof(*k), 0)
+				    != sizeof(*k))
+					return -EFAULT;
+				k++;
+				pos++;
+			}
 		}
 	} else {
 		for (; count > 0 && pos < 16; count--) {
@@ -415,10 +512,28 @@ static int genregs32_get(struct task_struct *target,
 		}
 
 		reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
-		for (; count > 0 && pos < 32; count--) {
-			if (get_user(reg, &reg_window[pos++]) ||
-			    put_user(reg, u++))
-				return -EFAULT;
+		if (target == current) {
+			for (; count > 0 && pos < 32; count--) {
+				if (get_user(reg, &reg_window[pos++]) ||
+				    put_user(reg, u++))
+					return -EFAULT;
+			}
+		} else {
+			for (; count > 0 && pos < 32; count--) {
+				if (access_process_vm(target,
+						      (unsigned long)
+						      &reg_window[pos],
+						      &reg, sizeof(reg), 0)
+				    != sizeof(reg))
+					return -EFAULT;
+				if (access_process_vm(target,
+						      (unsigned long) u,
+						      &reg, sizeof(reg), 1)
+				    != sizeof(reg))
+					return -EFAULT;
+				pos++;
+				u++;
+			}
 		}
 	}
 	while (count > 0) {
@@ -480,9 +595,23 @@ static int genregs32_set(struct task_struct *target,
 			regs->u_regs[pos++] = *k++;
 
 		reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
-		for (; count > 0 && pos < 32; count--) {
-			if (put_user(*k++, &reg_window[pos++]))
-				return -EFAULT;
+		if (target == current) {
+			for (; count > 0 && pos < 32; count--) {
+				if (put_user(*k++, &reg_window[pos++]))
+					return -EFAULT;
+			}
+		} else {
+			for (; count > 0 && pos < 32; count--) {
+				if (access_process_vm(target,
+						      (unsigned long)
+						      &reg_window[pos],
+						      (void *) k,
+						      sizeof(*k), 1)
+				    != sizeof(*k))
+					return -EFAULT;
+				k++;
+				pos++;
+			}
 		}
 	} else {
 		for (; count > 0 && pos < 16; count--) {
@@ -492,10 +621,29 @@ static int genregs32_set(struct task_struct *target,
 		}
 
 		reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
-		for (; count > 0 && pos < 32; count--) {
-			if (get_user(reg, u++) ||
-			    put_user(reg, &reg_window[pos++]))
-				return -EFAULT;
+		if (target == current) {
+			for (; count > 0 && pos < 32; count--) {
+				if (get_user(reg, u++) ||
+				    put_user(reg, &reg_window[pos++]))
+					return -EFAULT;
+			}
+		} else {
+			for (; count > 0 && pos < 32; count--) {
+				if (access_process_vm(target,
+						      (unsigned long)
+						      u,
+						      &reg, sizeof(reg), 0)
+				    != sizeof(reg))
+					return -EFAULT;
+				if (access_process_vm(target,
+						      (unsigned long)
+						      &reg_window[pos],
+						      &reg, sizeof(reg), 1)
+				    != sizeof(reg))
+					return -EFAULT;
+				pos++;
+				u++;
+			}
 		}
 	}
 	while (count > 0) {
@@ -676,14 +824,18 @@ static const struct user_regset_view user_sparc32_view = {
 	.name = "sparc", .e_machine = EM_SPARC,
 	.regsets = sparc32_regsets, .n = ARRAY_SIZE(sparc32_regsets)
 };
+#endif /* CONFIG_COMPAT */
 
 const struct user_regset_view *task_user_regset_view(struct task_struct *task)
 {
+#ifdef CONFIG_COMPAT
 	if (test_tsk_thread_flag(task, TIF_32BIT))
 		return &user_sparc32_view;
+#endif
 	return &user_sparc64_view;
 }
 
+#ifdef CONFIG_COMPAT
 struct compat_fps {
 	unsigned int regs[32];
 	unsigned int fsr;
@@ -699,7 +851,7 @@ struct compat_fps {
 long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
 			compat_ulong_t caddr, compat_ulong_t cdata)
 {
-	const struct user_regset_view *view = task_user_regset_view(child);
+	const struct user_regset_view *view = task_user_regset_view(current);
 	compat_ulong_t caddr2 = task_pt_regs(current)->u_regs[UREG_I4];
 	struct pt_regs32 __user *pregs;
 	struct compat_fps __user *fps;
@@ -798,6 +950,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
 
 	return ret;
 }
+#endif /* CONFIG_COMPAT */
 
 struct fps {
 	unsigned int regs[64];
@@ -806,12 +959,15 @@ struct fps {
 
 long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 {
-	const struct user_regset_view *view = task_user_regset_view(child);
-	struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
+	const struct user_regset_view *view = task_user_regset_view(current);
 	unsigned long addr2 = task_pt_regs(current)->u_regs[UREG_I4];
-	struct fps __user *fps = (struct fps __user *) addr;
+	struct pt_regs __user *pregs;
+	struct fps __user *fps;
 	int ret;
 
+	pregs = (struct pt_regs __user *) (unsigned long) addr;
+	fps = (struct fps __user *) (unsigned long) addr;
+
 	switch (request) {
 	case PTRACE_PEEKUSR:
 		ret = (addr != 0) ? -EIO : 0;
diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c
index d036dbe7286..6acb4c51cfe 100644
--- a/arch/sparc64/kernel/setup.c
+++ b/arch/sparc64/kernel/setup.c
@@ -51,6 +51,8 @@
 #include <net/ipconfig.h>
 #endif
 
+#include "entry.h"
+
 /* Used to synchronize accesses to NatSemi SUPER I/O chip configure
  * operations in asm/ns87303.h
  */
@@ -335,9 +337,6 @@ void __init setup_arch(char **cmdline_p)
 
 /* BUFFER is PAGE_SIZE bytes long. */
 
-extern char *sparc_cpu_type;
-extern char *sparc_fpu_type;
-
 extern void smp_info(struct seq_file *);
 extern void smp_bogo(struct seq_file *);
 extern void mmu_info(struct seq_file *);
diff --git a/arch/sparc64/kernel/signal.c b/arch/sparc64/kernel/signal.c
index fb13775b368..9d51956e8e2 100644
--- a/arch/sparc64/kernel/signal.c
+++ b/arch