Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 (4786b4ee) · Commits · e / devices / android_kernel_fairphone_FP4

Documentation/kernel-parameters.txt

+4 −0

Original line number	Diff line number	Diff line
		@@ -1362,6 +1362,10 @@ and is between 256 and 4096 characters. It is defined in the file

		nowb [ARM]

		nptcg= [IA64] Override max number of concurrent global TLB
		purges which is reported from either PAL_VM_SUMMARY or
		SAL PALO.

		numa_zonelist_order= [KNL, BOOT] Select zonelist order for NUMA.
		one of ['zone', 'node', 'default'] can be specified
		This can be set from sysctl after boot.

arch/ia64/Kconfig

+14 −0

Original line number	Diff line number	Diff line
		@@ -283,6 +283,17 @@ config FORCE_MAX_ZONEORDER
		default "17" if HUGETLB_PAGE
		default "11"

		config VIRT_CPU_ACCOUNTING
		bool "Deterministic task and CPU time accounting"
		default n
		help
		Select this option to enable more accurate task and CPU time
		accounting. This is done by reading a CPU counter on each
		kernel entry and exit and on transitions within the kernel
		between system, softirq and hardirq state, so there is a
		small performance impact.
		If in doubt, say N here.

		config SMP
		bool "Symmetric multi-processing support"
		help
		@@ -611,6 +622,9 @@ config IRQ_PER_CPU
		bool
		default y

		config IOMMU_HELPER
		def_bool (IA64_HP_ZX1 \|\| IA64_HP_ZX1_SWIOTLB \|\| IA64_GENERIC)

		source "arch/ia64/hp/sim/Kconfig"

		source "arch/ia64/Kconfig.debug"

arch/ia64/hp/common/sba_iommu.c

+39 −17

Original line number	Diff line number	Diff line
		@@ -35,6 +35,7 @@
		#include <linux/nodemask.h>
		#include <linux/bitops.h> /* hweight64() */
		#include <linux/crash_dump.h>
		#include <linux/iommu-helper.h>

		#include <asm/delay.h> /* ia64_get_itc() */
		#include <asm/io.h>
		@@ -460,6 +461,13 @@ get_iovp_order (unsigned long size)
		return order;
		}

		static unsigned long ptr_to_pide(struct ioc ioc, unsigned long res_ptr,
		unsigned int bitshiftcnt)
		{
		return (((unsigned long)res_ptr - (unsigned long)ioc->res_map) << 3)
		+ bitshiftcnt;
		}

		/**
		* sba_search_bitmap - find free space in IO PDIR resource bitmap
		* @ioc: IO MMU structure which owns the pdir we are interested in.
		@@ -471,15 +479,25 @@ get_iovp_order (unsigned long size)
		* Cool perf optimization: search for log2(size) bits at a time.
		*/
		static SBA_INLINE unsigned long
		sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted, int use_hint)
		sba_search_bitmap(struct ioc ioc, struct device dev,
		unsigned long bits_wanted, int use_hint)
		{
		unsigned long *res_ptr;
		unsigned long res_end = (unsigned long ) &(ioc->res_map[ioc->res_size]);
		unsigned long flags, pide = ~0UL;
		unsigned long flags, pide = ~0UL, tpide;
		unsigned long boundary_size;
		unsigned long shift;
		int ret;

		ASSERT(((unsigned long) ioc->res_hint & (sizeof(unsigned long) - 1UL)) == 0);
		ASSERT(res_ptr < res_end);

		boundary_size = (unsigned long long)dma_get_seg_boundary(dev) + 1;
		boundary_size = ALIGN(boundary_size, 1ULL << iovp_shift) >> iovp_shift;

		BUG_ON(ioc->ibase & ~iovp_mask);
		shift = ioc->ibase >> iovp_shift;

		spin_lock_irqsave(&ioc->res_lock, flags);

		/* Allow caller to force a search through the entire resource space */
		@@ -504,9 +522,7 @@ sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted, int use_hint)
		if (likely(*res_ptr != ~0UL)) {
		bitshiftcnt = ffz(*res_ptr);
		*res_ptr \|= (1UL << bitshiftcnt);
		pide = ((unsigned long)res_ptr - (unsigned long)ioc->res_map);
		pide <<= 3; /* convert to bit address */
		pide += bitshiftcnt;
		pide = ptr_to_pide(ioc, res_ptr, bitshiftcnt);
		ioc->res_bitshift = bitshiftcnt + bits_wanted;
		goto found_it;
		}
		@@ -535,11 +551,13 @@ sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted, int use_hint)
		DBG_RES(" %p %lx %lx\n", res_ptr, mask, *res_ptr);
		ASSERT(0 != mask);
		for (; mask ; mask <<= o, bitshiftcnt += o) {
		if(0 == ((*res_ptr) & mask)) {
		tpide = ptr_to_pide(ioc, res_ptr, bitshiftcnt);
		ret = iommu_is_span_boundary(tpide, bits_wanted,
		shift,
		boundary_size);
		if ((0 == ((*res_ptr) & mask)) && !ret) {
		res_ptr \|= mask; / mark resources busy! */
		pide = ((unsigned long)res_ptr - (unsigned long)ioc->res_map);
		pide <<= 3; /* convert to bit address */
		pide += bitshiftcnt;
		pide = tpide;
		ioc->res_bitshift = bitshiftcnt + bits_wanted;
		goto found_it;
		}
		@@ -560,6 +578,11 @@ sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted, int use_hint)
		end = res_end - qwords;

		for (; res_ptr < end; res_ptr++) {
		tpide = ptr_to_pide(ioc, res_ptr, 0);
		ret = iommu_is_span_boundary(tpide, bits_wanted,
		shift, boundary_size);
		if (ret)
		goto next_ptr;
		for (i = 0 ; i < qwords ; i++) {
		if (res_ptr[i] != 0)
		goto next_ptr;
		@@ -572,8 +595,7 @@ sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted, int use_hint)
		res_ptr[i] = ~0UL;
		res_ptr[i] \|= RESMAP_MASK(bits);

		pide = ((unsigned long)res_ptr - (unsigned long)ioc->res_map);
		pide <<= 3; /* convert to bit address */
		pide = tpide;
		res_ptr += qwords;
		ioc->res_bitshift = bits;
		goto found_it;
		@@ -605,7 +627,7 @@ sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted, int use_hint)
		* resource bit map.
		*/
		static int
		sba_alloc_range(struct ioc *ioc, size_t size)
		sba_alloc_range(struct ioc ioc, struct device dev, size_t size)
		{
		unsigned int pages_needed = size >> iovp_shift;
		#ifdef PDIR_SEARCH_TIMING
		@@ -622,9 +644,9 @@ sba_alloc_range(struct ioc *ioc, size_t size)
		/*
		** "seek and ye shall find"...praying never hurts either...
		*/
		pide = sba_search_bitmap(ioc, pages_needed, 1);
		pide = sba_search_bitmap(ioc, dev, pages_needed, 1);
		if (unlikely(pide >= (ioc->res_size << 3))) {
		pide = sba_search_bitmap(ioc, pages_needed, 0);
		pide = sba_search_bitmap(ioc, dev, pages_needed, 0);
		if (unlikely(pide >= (ioc->res_size << 3))) {
		#if DELAYED_RESOURCE_CNT > 0
		unsigned long flags;
		@@ -653,7 +675,7 @@ sba_alloc_range(struct ioc *ioc, size_t size)
		}
		spin_unlock_irqrestore(&ioc->saved_lock, flags);

		pide = sba_search_bitmap(ioc, pages_needed, 0);
		pide = sba_search_bitmap(ioc, dev, pages_needed, 0);
		if (unlikely(pide >= (ioc->res_size << 3)))
		panic(__FILE__ ": I/O MMU @ %p is out of mapping resources\n",
		ioc->ioc_hpa);
		@@ -936,7 +958,7 @@ sba_map_single(struct device dev, void addr, size_t size, int dir)
		spin_unlock_irqrestore(&ioc->res_lock, flags);
		#endif

		pide = sba_alloc_range(ioc, size);
		pide = sba_alloc_range(ioc, dev, size);

		iovp = (dma_addr_t) pide << iovp_shift;

		@@ -1373,7 +1395,7 @@ sba_coalesce_chunks(struct ioc ioc, struct device dev,
		dma_len = (dma_len + dma_offset + ~iovp_mask) & iovp_mask;
		ASSERT(dma_len <= DMA_CHUNK_SIZE);
		dma_sg->dma_address = (dma_addr_t) (PIDE_FLAG
		\| (sba_alloc_range(ioc, dma_len) << iovp_shift)
		\| (sba_alloc_range(ioc, dev, dma_len) << iovp_shift)
		\| dma_offset);
		n_mappings++;
		}

arch/ia64/ia32/elfcore32.h

+13 −1

Original line number	Diff line number	Diff line
		@@ -30,7 +30,19 @@ struct elf_siginfo
		int si_errno; /* errno */
		};

		#define jiffies_to_timeval(a,b) do { (b)->tv_usec = 0; (b)->tv_sec = (a)/HZ; }while(0)
		#ifdef CONFIG_VIRT_CPU_ACCOUNTING
		/*
		* Hacks are here since types between compat_timeval (= pair of s32) and
		* ia64-native timeval (= pair of s64) are not compatible, at least a file
		* arch/ia64/ia32/../../../fs/binfmt_elf.c will get warnings from compiler on
		* use of cputime_to_timeval(), which usually an alias of jiffies_to_timeval().
		*/
		#define cputime_to_timeval(a,b) \
		do { (b)->tv_usec = 0; (b)->tv_sec = (a)/NSEC_PER_SEC; } while(0)
		#else
		#define jiffies_to_timeval(a,b) \
		do { (b)->tv_usec = 0; (b)->tv_sec = (a)/HZ; } while(0)
		#endif

		struct elf_prstatus
		{

arch/ia64/ia32/sys_ia32.c

+624 −25

Original line number	Diff line number	Diff line
		@@ -38,6 +38,7 @@
		#include <linux/eventpoll.h>
		#include <linux/personality.h>
		#include <linux/ptrace.h>
		#include <linux/regset.h>
		#include <linux/stat.h>
		#include <linux/ipc.h>
		#include <linux/capability.h>
		@@ -2387,16 +2388,45 @@ get_free_idx (void)
		return -ESRCH;
		}

		static void set_tls_desc(struct task_struct *p, int idx,
		const struct ia32_user_desc *info, int n)
		{
		struct thread_struct *t = &p->thread;
		struct desc_struct *desc = &t->tls_array[idx - GDT_ENTRY_TLS_MIN];
		int cpu;

		/*
		* We must not get preempted while modifying the TLS.
		*/
		cpu = get_cpu();

		while (n-- > 0) {
		if (LDT_empty(info)) {
		desc->a = 0;
		desc->b = 0;
		} else {
		desc->a = LDT_entry_a(info);
		desc->b = LDT_entry_b(info);
		}

		++info;
		++desc;
		}

		if (t == &current->thread)
		load_TLS(t, cpu);

		put_cpu();
		}

		/*
		* Set a given TLS descriptor:
		*/
		asmlinkage int
		sys32_set_thread_area (struct ia32_user_desc __user *u_info)
		{
		struct thread_struct *t = &current->thread;
		struct ia32_user_desc info;
		struct desc_struct *desc;
		int cpu, idx;
		int idx;

		if (copy_from_user(&info, u_info, sizeof(info)))
		return -EFAULT;
		@@ -2416,18 +2446,7 @@ sys32_set_thread_area (struct ia32_user_desc __user *u_info)
		if (idx < GDT_ENTRY_TLS_MIN \|\| idx > GDT_ENTRY_TLS_MAX)
		return -EINVAL;

		desc = t->tls_array + idx - GDT_ENTRY_TLS_MIN;

		cpu = smp_processor_id();

		if (LDT_empty(&info)) {
		desc->a = 0;
		desc->b = 0;
		} else {
		desc->a = LDT_entry_a(&info);
		desc->b = LDT_entry_b(&info);
		}
		load_TLS(t, cpu);
		set_tls_desc(current, idx, &info, 1);
		return 0;
		}

		@@ -2451,6 +2470,20 @@ sys32_set_thread_area (struct ia32_user_desc __user *u_info)
		#define GET_PRESENT(desc) (((desc)->b >> 15) & 1)
		#define GET_USEABLE(desc) (((desc)->b >> 20) & 1)

		static void fill_user_desc(struct ia32_user_desc *info, int idx,
		const struct desc_struct *desc)
		{
		info->entry_number = idx;
		info->base_addr = GET_BASE(desc);
		info->limit = GET_LIMIT(desc);
		info->seg_32bit = GET_32BIT(desc);
		info->contents = GET_CONTENTS(desc);
		info->read_exec_only = !GET_WRITABLE(desc);
		info->limit_in_pages = GET_LIMIT_PAGES(desc);
		info->seg_not_present = !GET_PRESENT(desc);
		info->useable = GET_USEABLE(desc);
		}

		asmlinkage int
		sys32_get_thread_area (struct ia32_user_desc __user *u_info)
		{
		@@ -2464,22 +2497,588 @@ sys32_get_thread_area (struct ia32_user_desc __user *u_info)
		return -EINVAL;

		desc = current->thread.tls_array + idx - GDT_ENTRY_TLS_MIN;

		info.entry_number = idx;
		info.base_addr = GET_BASE(desc);
		info.limit = GET_LIMIT(desc);
		info.seg_32bit = GET_32BIT(desc);
		info.contents = GET_CONTENTS(desc);
		info.read_exec_only = !GET_WRITABLE(desc);
		info.limit_in_pages = GET_LIMIT_PAGES(desc);
		info.seg_not_present = !GET_PRESENT(desc);
		info.useable = GET_USEABLE(desc);
		fill_user_desc(&info, idx, desc);

		if (copy_to_user(u_info, &info, sizeof(info)))
		return -EFAULT;
		return 0;
		}

		struct regset_get {
		void *kbuf;
		void __user *ubuf;
		};

		struct regset_set {
		const void *kbuf;
		const void __user *ubuf;
		};

		struct regset_getset {
		struct task_struct *target;
		const struct user_regset *regset;
		union {
		struct regset_get get;
		struct regset_set set;
		} u;
		unsigned int pos;
		unsigned int count;
		int ret;
		};

		static void getfpreg(struct task_struct task, int regno, int val)
		{
		switch (regno / sizeof(int)) {
		case 0:
		*val = task->thread.fcr & 0xffff;
		break;
		case 1:
		*val = task->thread.fsr & 0xffff;
		break;
		case 2:
		*val = (task->thread.fsr>>16) & 0xffff;
		break;
		case 3:
		*val = task->thread.fir;
		break;
		case 4:
		*val = (task->thread.fir>>32) & 0xffff;
		break;
		case 5:
		*val = task->thread.fdr;
		break;
		case 6:
		*val = (task->thread.fdr >> 32) & 0xffff;
		break;
		}
		}

		static void setfpreg(struct task_struct *task, int regno, int val)
		{
		switch (regno / sizeof(int)) {
		case 0:
		task->thread.fcr = (task->thread.fcr & (~0x1f3f))
		\| (val & 0x1f3f);
		break;
		case 1:
		task->thread.fsr = (task->thread.fsr & (~0xffff)) \| val;
		break;
		case 2:
		task->thread.fsr = (task->thread.fsr & (~0xffff0000))
		\| (val << 16);
		break;
		case 3:
		task->thread.fir = (task->thread.fir & (~0xffffffff)) \| val;
		break;
		case 5:
		task->thread.fdr = (task->thread.fdr & (~0xffffffff)) \| val;
		break;
		}
		}

		static void access_fpreg_ia32(int regno, void *reg,
		struct pt_regs pt, struct switch_stack sw,
		int tos, int write)
		{
		void *f;

		if ((regno += tos) >= 8)
		regno -= 8;
		if (regno < 4)
		f = &pt->f8 + regno;
		else if (regno <= 7)
		f = &sw->f12 + (regno - 4);
		else {
		printk(KERN_ERR "regno must be less than 7 \n");
		return;
		}

		if (write)
		memcpy(f, reg, sizeof(struct _fpreg_ia32));
		else
		memcpy(reg, f, sizeof(struct _fpreg_ia32));
		}

		static void do_fpregs_get(struct unw_frame_info info, void arg)
		{
		struct regset_getset *dst = arg;
		struct task_struct *task = dst->target;
		struct pt_regs *pt;
		int start, end, tos;
		char buf[80];

		if (dst->count == 0 \|\| unw_unwind_to_user(info) < 0)
		return;
		if (dst->pos < 7 * sizeof(int)) {
		end = min((dst->pos + dst->count),
		(unsigned int)(7 * sizeof(int)));
		for (start = dst->pos; start < end; start += sizeof(int))
		getfpreg(task, start, (int *)(buf + start));
		dst->ret = user_regset_copyout(&dst->pos, &dst->count,
		&dst->u.get.kbuf, &dst->u.get.ubuf, buf,
		0, 7 * sizeof(int));
		if (dst->ret \|\| dst->count == 0)
		return;
		}
		if (dst->pos < sizeof(struct ia32_user_i387_struct)) {
		pt = task_pt_regs(task);
		tos = (task->thread.fsr >> 11) & 7;
		end = min(dst->pos + dst->count,
		(unsigned int)(sizeof(struct ia32_user_i387_struct)));
		start = (dst->pos - 7 * sizeof(int)) /
		sizeof(struct _fpreg_ia32);
		end = (end - 7 * sizeof(int)) / sizeof(struct _fpreg_ia32);
		for (; start < end; start++)
		access_fpreg_ia32(start,
		(struct _fpreg_ia32 *)buf + start,
		pt, info->sw, tos, 0);
		dst->ret = user_regset_copyout(&dst->pos, &dst->count,
		&dst->u.get.kbuf, &dst->u.get.ubuf,
		buf, 7 * sizeof(int),
		sizeof(struct ia32_user_i387_struct));
		if (dst->ret \|\| dst->count == 0)
		return;
		}
		}

		static void do_fpregs_set(struct unw_frame_info info, void arg)
		{
		struct regset_getset *dst = arg;
		struct task_struct *task = dst->target;
		struct pt_regs *pt;
		char buf[80];
		int end, start, tos;

		if (dst->count == 0 \|\| unw_unwind_to_user(info) < 0)
		return;

		if (dst->pos < 7 * sizeof(int)) {
		start = dst->pos;
		dst->ret = user_regset_copyin(&dst->pos, &dst->count,
		&dst->u.set.kbuf, &dst->u.set.ubuf, buf,
		0, 7 * sizeof(int));
		if (dst->ret)
		return;
		for (; start < dst->pos; start += sizeof(int))
		setfpreg(task, start, ((int )(buf + start)));
		if (dst->count == 0)
		return;
		}
		if (dst->pos < sizeof(struct ia32_user_i387_struct)) {
		start = (dst->pos - 7 * sizeof(int)) /
		sizeof(struct _fpreg_ia32);
		dst->ret = user_regset_copyin(&dst->pos, &dst->count,
		&dst->u.set.kbuf, &dst->u.set.ubuf,
		buf, 7 * sizeof(int),
		sizeof(struct ia32_user_i387_struct));
		if (dst->ret)
		return;
		pt = task_pt_regs(task);
		tos = (task->thread.fsr >> 11) & 7;
		end = (dst->pos - 7 * sizeof(int)) / sizeof(struct _fpreg_ia32);
		for (; start < end; start++)
		access_fpreg_ia32(start,
		(struct _fpreg_ia32 *)buf + start,
		pt, info->sw, tos, 1);
		if (dst->count == 0)
		return;
		}
		}

		#define OFFSET(member) ((int)(offsetof(struct ia32_user_fxsr_struct, member)))
		static void getfpxreg(struct task_struct task, int start, int end, char buf)
		{
		int min_val;

		min_val = min(end, OFFSET(fop));
		while (start < min_val) {
		if (start == OFFSET(cwd))
		((short )buf) = task->thread.fcr & 0xffff;
		else if (start == OFFSET(swd))
		((short )buf) = task->thread.fsr & 0xffff;
		else if (start == OFFSET(twd))
		((short )buf) = (task->thread.fsr>>16) & 0xffff;
		buf += 2;
		start += 2;
		}
		/* skip fop element */
		if (start == OFFSET(fop)) {
		start += 2;
		buf += 2;
		}
		while (start < end) {
		if (start == OFFSET(fip))
		((int )buf) = task->thread.fir;
		else if (start == OFFSET(fcs))
		((int )buf) = (task->thread.fir>>32) & 0xffff;
		else if (start == OFFSET(foo))
		((int )buf) = task->thread.fdr;
		else if (start == OFFSET(fos))
		((int )buf) = (task->thread.fdr>>32) & 0xffff;
		else if (start == OFFSET(mxcsr))
		((int )buf) = ((task->thread.fcr>>32) & 0xff80)
		\| ((task->thread.fsr>>32) & 0x3f);
		buf += 4;
		start += 4;
		}
		}

		static void setfpxreg(struct task_struct task, int start, int end, char buf)
		{
		int min_val, num32;
		short num;
		unsigned long num64;

		min_val = min(end, OFFSET(fop));
		while (start < min_val) {
		num = ((short )buf);
		if (start == OFFSET(cwd)) {
		task->thread.fcr = (task->thread.fcr & (~0x1f3f))
		\| (num & 0x1f3f);
		} else if (start == OFFSET(swd)) {
		task->thread.fsr = (task->thread.fsr & (~0xffff)) \| num;
		} else if (start == OFFSET(twd)) {
		task->thread.fsr = (task->thread.fsr & (~0xffff0000))
		\| (((int)num) << 16);
		}
		buf += 2;
		start += 2;
		}
		/* skip fop element */
		if (start == OFFSET(fop)) {
		start += 2;
		buf += 2;
		}
		while (start < end) {
		num32 = ((int )buf);
		if (start == OFFSET(fip))
		task->thread.fir = (task->thread.fir & (~0xffffffff))
		\| num32;
		else if (start == OFFSET(foo))
		task->thread.fdr = (task->thread.fdr & (~0xffffffff))
		\| num32;
		else if (start == OFFSET(mxcsr)) {
		num64 = num32 & 0xff10;
		task->thread.fcr = (task->thread.fcr &
		(~0xff1000000000UL)) \| (num64<<32);
		num64 = num32 & 0x3f;
		task->thread.fsr = (task->thread.fsr &
		(~0x3f00000000UL)) \| (num64<<32);
		}
		buf += 4;
		start += 4;
		}
		}

		static void do_fpxregs_get(struct unw_frame_info info, void arg)
		{
		struct regset_getset *dst = arg;
		struct task_struct *task = dst->target;
		struct pt_regs *pt;
		char buf[128];
		int start, end, tos;

		if (dst->count == 0 \|\| unw_unwind_to_user(info) < 0)
		return;
		if (dst->pos < OFFSET(st_space[0])) {
		end = min(dst->pos + dst->count, (unsigned int)32);
		getfpxreg(task, dst->pos, end, buf);
		dst->ret = user_regset_copyout(&dst->pos, &dst->count,
		&dst->u.get.kbuf, &dst->u.get.ubuf, buf,
		0, OFFSET(st_space[0]));
		if (dst->ret \|\| dst->count == 0)
		return;
		}
		if (dst->pos < OFFSET(xmm_space[0])) {
		pt = task_pt_regs(task);
		tos = (task->thread.fsr >> 11) & 7;
		end = min(dst->pos + dst->count,
		(unsigned int)OFFSET(xmm_space[0]));
		start = (dst->pos - OFFSET(st_space[0])) / 16;
		end = (end - OFFSET(st_space[0])) / 16;
		for (; start < end; start++)
		access_fpreg_ia32(start, buf + 16 * start, pt,
		info->sw, tos, 0);
		dst->ret = user_regset_copyout(&dst->pos, &dst->count,
		&dst->u.get.kbuf, &dst->u.get.ubuf,
		buf, OFFSET(st_space[0]), OFFSET(xmm_space[0]));
		if (dst->ret \|\| dst->count == 0)
		return;
		}
		if (dst->pos < OFFSET(padding[0]))
		dst->ret = user_regset_copyout(&dst->pos, &dst->count,
		&dst->u.get.kbuf, &dst->u.get.ubuf,
		&info->sw->f16, OFFSET(xmm_space[0]),
		OFFSET(padding[0]));
		}

		static void do_fpxregs_set(struct unw_frame_info info, void arg)
		{
		struct regset_getset *dst = arg;
		struct task_struct *task = dst->target;
		char buf[128];
		int start, end;

		if (dst->count == 0 \|\| unw_unwind_to_user(info) < 0)
		return;

		if (dst->pos < OFFSET(st_space[0])) {
		start = dst->pos;
		dst->ret = user_regset_copyin(&dst->pos, &dst->count,
		&dst->u.set.kbuf, &dst->u.set.ubuf,
		buf, 0, OFFSET(st_space[0]));
		if (dst->ret)
		return;
		setfpxreg(task, start, dst->pos, buf);
		if (dst->count == 0)
		return;
		}
		if (dst->pos < OFFSET(xmm_space[0])) {
		struct pt_regs *pt;
		int tos;
		pt = task_pt_regs(task);
		tos = (task->thread.fsr >> 11) & 7;
		start = (dst->pos - OFFSET(st_space[0])) / 16;
		dst->ret = user_regset_copyin(&dst->pos, &dst->count,
		&dst->u.set.kbuf, &dst->u.set.ubuf,
		buf, OFFSET(st_space[0]), OFFSET(xmm_space[0]));
		if (dst->ret)
		return;
		end = (dst->pos - OFFSET(st_space[0])) / 16;
		for (; start < end; start++)
		access_fpreg_ia32(start, buf + 16 * start, pt, info->sw,
		tos, 1);
		if (dst->count == 0)
		return;
		}
		if (dst->pos < OFFSET(padding[0]))
		dst->ret = user_regset_copyin(&dst->pos, &dst->count,
		&dst->u.set.kbuf, &dst->u.set.ubuf,
		&info->sw->f16, OFFSET(xmm_space[0]),
		OFFSET(padding[0]));
		}
		#undef OFFSET

		static int do_regset_call(void (call)(struct unw_frame_info , void *),
		struct task_struct *target,
		const struct user_regset *regset,
		unsigned int pos, unsigned int count,
		const void kbuf, const void __user ubuf)
		{
		struct regset_getset info = { .target = target, .regset = regset,
		.pos = pos, .count = count,
		.u.set = { .kbuf = kbuf, .ubuf = ubuf },
		.ret = 0 };

		if (target == current)
		unw_init_running(call, &info);
		else {
		struct unw_frame_info ufi;
		memset(&ufi, 0, sizeof(ufi));
		unw_init_from_blocked_task(&ufi, target);
		(*call)(&ufi, &info);
		}

		return info.ret;
		}

		static int ia32_fpregs_get(struct task_struct *target,
		const struct user_regset *regset,
		unsigned int pos, unsigned int count,
		void kbuf, void __user ubuf)
		{
		return do_regset_call(do_fpregs_get, target, regset, pos, count,
		kbuf, ubuf);
		}

		static int ia32_fpregs_set(struct task_struct *target,
		const struct user_regset *regset,
		unsigned int pos, unsigned int count,
		const void kbuf, const void __user ubuf)
		{
		return do_regset_call(do_fpregs_set, target, regset, pos, count,
		kbuf, ubuf);
		}

		static int ia32_fpxregs_get(struct task_struct *target,
		const struct user_regset *regset,
		unsigned int pos, unsigned int count,
		void kbuf, void __user ubuf)
		{
		return do_regset_call(do_fpxregs_get, target, regset, pos, count,
		kbuf, ubuf);
		}

		static int ia32_fpxregs_set(struct task_struct *target,
		const struct user_regset *regset,
		unsigned int pos, unsigned int count,
		const void kbuf, const void __user ubuf)
		{
		return do_regset_call(do_fpxregs_set, target, regset, pos, count,
		kbuf, ubuf);
		}

		static int ia32_genregs_get(struct task_struct *target,
		const struct user_regset *regset,
		unsigned int pos, unsigned int count,
		void kbuf, void __user ubuf)
		{
		if (kbuf) {
		u32 *kp = kbuf;
		while (count > 0) {
		*kp++ = getreg(target, pos);
		pos += 4;
		count -= 4;
		}
		} else {
		u32 __user *up = ubuf;
		while (count > 0) {
		if (__put_user(getreg(target, pos), up++))
		return -EFAULT;
		pos += 4;
		count -= 4;
		}
		}
		return 0;
		}

		static int ia32_genregs_set(struct task_struct *target,
		const struct user_regset *regset,
		unsigned int pos, unsigned int count,
		const void kbuf, const void __user ubuf)
		{
		int ret = 0;

		if (kbuf) {
		const u32 *kp = kbuf;
		while (!ret && count > 0) {
		putreg(target, pos, *kp++);
		pos += 4;
		count -= 4;
		}
		} else {
		const u32 __user *up = ubuf;
		u32 val;
		while (!ret && count > 0) {
		ret = __get_user(val, up++);
		if (!ret)
		putreg(target, pos, val);
		pos += 4;
		count -= 4;
		}
		}
		return ret;
		}

		static int ia32_tls_active(struct task_struct *target,
		const struct user_regset *regset)
		{
		struct thread_struct *t = &target->thread;
		int n = GDT_ENTRY_TLS_ENTRIES;
		while (n > 0 && desc_empty(&t->tls_array[n -1]))
		--n;
		return n;
		}

		static int ia32_tls_get(struct task_struct *target,
		const struct user_regset *regset, unsigned int pos,
		unsigned int count, void kbuf, void __user ubuf)
		{
		const struct desc_struct *tls;

		if (pos > GDT_ENTRY_TLS_ENTRIES * sizeof(struct ia32_user_desc) \|\|
		(pos % sizeof(struct ia32_user_desc)) != 0 \|\|
		(count % sizeof(struct ia32_user_desc)) != 0)
		return -EINVAL;

		pos /= sizeof(struct ia32_user_desc);
		count /= sizeof(struct ia32_user_desc);

		tls = &target->thread.tls_array[pos];

		if (kbuf) {
		struct ia32_user_desc *info = kbuf;
		while (count-- > 0)
		fill_user_desc(info++, GDT_ENTRY_TLS_MIN + pos++,
		tls++);
		} else {
		struct ia32_user_desc __user *u_info = ubuf;
		while (count-- > 0) {
		struct ia32_user_desc info;
		fill_user_desc(&info, GDT_ENTRY_TLS_MIN + pos++, tls++);
		if (__copy_to_user(u_info++, &info, sizeof(info)))
		return -EFAULT;
		}
		}

		return 0;
		}

		static int ia32_tls_set(struct task_struct *target,
		const struct user_regset *regset, unsigned int pos,
		unsigned int count, const void kbuf, const void __user ubuf)
		{
		struct ia32_user_desc infobuf[GDT_ENTRY_TLS_ENTRIES];
		const struct ia32_user_desc *info;

		if (pos > GDT_ENTRY_TLS_ENTRIES * sizeof(struct ia32_user_desc) \|\|
		(pos % sizeof(struct ia32_user_desc)) != 0 \|\|
		(count % sizeof(struct ia32_user_desc)) != 0)
		return -EINVAL;

		if (kbuf)
		info = kbuf;
		else if (__copy_from_user(infobuf, ubuf, count))
		return -EFAULT;
		else
		info = infobuf;

		set_tls_desc(target,
		GDT_ENTRY_TLS_MIN + (pos / sizeof(struct ia32_user_desc)),
		info, count / sizeof(struct ia32_user_desc));

		return 0;
		}

		/*
		* This should match arch/i386/kernel/ptrace.c:native_regsets.
		* XXX ioperm? vm86?
		*/
		static const struct user_regset ia32_regsets[] = {
		{
		.core_note_type = NT_PRSTATUS,
		.n = sizeof(struct user_regs_struct32)/4,
		.size = 4, .align = 4,
		.get = ia32_genregs_get, .set = ia32_genregs_set
		},
		{
		.core_note_type = NT_PRFPREG,
		.n = sizeof(struct ia32_user_i387_struct) / 4,
		.size = 4, .align = 4,
		.get = ia32_fpregs_get, .set = ia32_fpregs_set
		},
		{
		.core_note_type = NT_PRXFPREG,
		.n = sizeof(struct ia32_user_fxsr_struct) / 4,
		.size = 4, .align = 4,
		.get = ia32_fpxregs_get, .set = ia32_fpxregs_set
		},
		{
		.core_note_type = NT_386_TLS,
		.n = GDT_ENTRY_TLS_ENTRIES,
		.bias = GDT_ENTRY_TLS_MIN,
		.size = sizeof(struct ia32_user_desc),
		.align = sizeof(struct ia32_user_desc),
		.active = ia32_tls_active,
		.get = ia32_tls_get, .set = ia32_tls_set,
		},
		};

		const struct user_regset_view user_ia32_view = {
		.name = "i386", .e_machine = EM_386,
		.regsets = ia32_regsets, .n = ARRAY_SIZE(ia32_regsets)
		};

		long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high,
		__u32 len_low, __u32 len_high, int advice)
		{