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-rw-r--r--arch/x86/include/asm/Kbuild2
-rw-r--r--arch/x86/include/asm/alternative-asm.h9
-rw-r--r--arch/x86/include/asm/alternative.h36
-rw-r--r--arch/x86/include/asm/apic.h2
-rw-r--r--arch/x86/include/asm/atomic.h28
-rw-r--r--arch/x86/include/asm/bitops.h14
-rw-r--r--arch/x86/include/asm/calling.h50
-rw-r--r--arch/x86/include/asm/checksum.h4
-rw-r--r--arch/x86/include/asm/cmpxchg.h4
-rw-r--r--arch/x86/include/asm/compat.h74
-rw-r--r--arch/x86/include/asm/cpufeature.h6
-rw-r--r--arch/x86/include/asm/fpu-internal.h422
-rw-r--r--arch/x86/include/asm/ftrace.h56
-rw-r--r--arch/x86/include/asm/futex.h19
-rw-r--r--arch/x86/include/asm/hardirq.h4
-rw-r--r--arch/x86/include/asm/hpet.h2
-rw-r--r--arch/x86/include/asm/hugetlb.h4
-rw-r--r--arch/x86/include/asm/i387.h29
-rw-r--r--arch/x86/include/asm/ia32.h67
-rw-r--r--arch/x86/include/asm/iommu_table.h6
-rw-r--r--arch/x86/include/asm/kprobes.h1
-rw-r--r--arch/x86/include/asm/kvm.h17
-rw-r--r--arch/x86/include/asm/kvm_emulate.h48
-rw-r--r--arch/x86/include/asm/kvm_host.h52
-rw-r--r--arch/x86/include/asm/kvm_para.h6
-rw-r--r--arch/x86/include/asm/mce.h13
-rw-r--r--arch/x86/include/asm/microcode.h10
-rw-r--r--arch/x86/include/asm/mmzone.h4
-rw-r--r--arch/x86/include/asm/msr-index.h3
-rw-r--r--arch/x86/include/asm/mutex.h4
-rw-r--r--arch/x86/include/asm/numa.h4
-rw-r--r--arch/x86/include/asm/pci.h2
-rw-r--r--arch/x86/include/asm/perf_event.h2
-rw-r--r--arch/x86/include/asm/perf_regs.h33
-rw-r--r--arch/x86/include/asm/pgtable.h15
-rw-r--r--arch/x86/include/asm/pgtable_32.h1
-rw-r--r--arch/x86/include/asm/pgtable_64.h1
-rw-r--r--arch/x86/include/asm/pgtable_types.h10
-rw-r--r--arch/x86/include/asm/posix_types.h10
-rw-r--r--arch/x86/include/asm/processor-flags.h1
-rw-r--r--arch/x86/include/asm/processor.h3
-rw-r--r--arch/x86/include/asm/rcu.h32
-rw-r--r--arch/x86/include/asm/seccomp.h4
-rw-r--r--arch/x86/include/asm/signal.h4
-rw-r--r--arch/x86/include/asm/smap.h91
-rw-r--r--arch/x86/include/asm/string.h4
-rw-r--r--arch/x86/include/asm/suspend.h4
-rw-r--r--arch/x86/include/asm/svm.h205
-rw-r--r--arch/x86/include/asm/sys_ia32.h2
-rw-r--r--arch/x86/include/asm/thread_info.h10
-rw-r--r--arch/x86/include/asm/uaccess.h32
-rw-r--r--arch/x86/include/asm/uaccess_32.h3
-rw-r--r--arch/x86/include/asm/uaccess_64.h3
-rw-r--r--arch/x86/include/asm/uprobes.h3
-rw-r--r--arch/x86/include/asm/user.h4
-rw-r--r--arch/x86/include/asm/vdso.h3
-rw-r--r--arch/x86/include/asm/vmx.h127
-rw-r--r--arch/x86/include/asm/x86_init.h9
-rw-r--r--arch/x86/include/asm/xen/interface.h12
-rw-r--r--arch/x86/include/asm/xen/swiotlb-xen.h2
-rw-r--r--arch/x86/include/asm/xor.h4
-rw-r--r--arch/x86/include/asm/xor_32.h58
-rw-r--r--arch/x86/include/asm/xor_64.h63
-rw-r--r--arch/x86/include/asm/xor_avx.h54
-rw-r--r--arch/x86/include/asm/xsave.h23
-rw-r--r--arch/x86/include/uapi/asm/Kbuild6
66 files changed, 1095 insertions, 745 deletions
diff --git a/arch/x86/include/asm/Kbuild b/arch/x86/include/asm/Kbuild
index f9c0d3ba9e8..66e5f0ef052 100644
--- a/arch/x86/include/asm/Kbuild
+++ b/arch/x86/include/asm/Kbuild
@@ -26,3 +26,5 @@ header-y += vsyscall.h
genhdr-y += unistd_32.h
genhdr-y += unistd_64.h
genhdr-y += unistd_x32.h
+
+generic-y += clkdev.h
diff --git a/arch/x86/include/asm/alternative-asm.h b/arch/x86/include/asm/alternative-asm.h
index 952bd0100c5..372231c22a4 100644
--- a/arch/x86/include/asm/alternative-asm.h
+++ b/arch/x86/include/asm/alternative-asm.h
@@ -1,3 +1,6 @@
+#ifndef _ASM_X86_ALTERNATIVE_ASM_H
+#define _ASM_X86_ALTERNATIVE_ASM_H
+
#ifdef __ASSEMBLY__
#include <asm/asm.h>
@@ -5,10 +8,10 @@
#ifdef CONFIG_SMP
.macro LOCK_PREFIX
672: lock
- .section .smp_locks,"a"
+ .pushsection .smp_locks,"a"
.balign 4
.long 672b - .
- .previous
+ .popsection
.endm
#else
.macro LOCK_PREFIX
@@ -24,3 +27,5 @@
.endm
#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_X86_ALTERNATIVE_ASM_H */
diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h
index 70780689599..58ed6d96a6a 100644
--- a/arch/x86/include/asm/alternative.h
+++ b/arch/x86/include/asm/alternative.h
@@ -29,10 +29,10 @@
#ifdef CONFIG_SMP
#define LOCK_PREFIX_HERE \
- ".section .smp_locks,\"a\"\n" \
- ".balign 4\n" \
- ".long 671f - .\n" /* offset */ \
- ".previous\n" \
+ ".pushsection .smp_locks,\"a\"\n" \
+ ".balign 4\n" \
+ ".long 671f - .\n" /* offset */ \
+ ".popsection\n" \
"671:"
#define LOCK_PREFIX LOCK_PREFIX_HERE "\n\tlock; "
@@ -60,7 +60,7 @@ extern void alternatives_smp_module_add(struct module *mod, char *name,
void *locks, void *locks_end,
void *text, void *text_end);
extern void alternatives_smp_module_del(struct module *mod);
-extern void alternatives_smp_switch(int smp);
+extern void alternatives_enable_smp(void);
extern int alternatives_text_reserved(void *start, void *end);
extern bool skip_smp_alternatives;
#else
@@ -68,7 +68,7 @@ static inline void alternatives_smp_module_add(struct module *mod, char *name,
void *locks, void *locks_end,
void *text, void *text_end) {}
static inline void alternatives_smp_module_del(struct module *mod) {}
-static inline void alternatives_smp_switch(int smp) {}
+static inline void alternatives_enable_smp(void) {}
static inline int alternatives_text_reserved(void *start, void *end)
{
return 0;
@@ -99,30 +99,30 @@ static inline int alternatives_text_reserved(void *start, void *end)
/* alternative assembly primitive: */
#define ALTERNATIVE(oldinstr, newinstr, feature) \
OLDINSTR(oldinstr) \
- ".section .altinstructions,\"a\"\n" \
+ ".pushsection .altinstructions,\"a\"\n" \
ALTINSTR_ENTRY(feature, 1) \
- ".previous\n" \
- ".section .discard,\"aw\",@progbits\n" \
+ ".popsection\n" \
+ ".pushsection .discard,\"aw\",@progbits\n" \
DISCARD_ENTRY(1) \
- ".previous\n" \
- ".section .altinstr_replacement, \"ax\"\n" \
+ ".popsection\n" \
+ ".pushsection .altinstr_replacement, \"ax\"\n" \
ALTINSTR_REPLACEMENT(newinstr, feature, 1) \
- ".previous"
+ ".popsection"
#define ALTERNATIVE_2(oldinstr, newinstr1, feature1, newinstr2, feature2)\
OLDINSTR(oldinstr) \
- ".section .altinstructions,\"a\"\n" \
+ ".pushsection .altinstructions,\"a\"\n" \
ALTINSTR_ENTRY(feature1, 1) \
ALTINSTR_ENTRY(feature2, 2) \
- ".previous\n" \
- ".section .discard,\"aw\",@progbits\n" \
+ ".popsection\n" \
+ ".pushsection .discard,\"aw\",@progbits\n" \
DISCARD_ENTRY(1) \
DISCARD_ENTRY(2) \
- ".previous\n" \
- ".section .altinstr_replacement, \"ax\"\n" \
+ ".popsection\n" \
+ ".pushsection .altinstr_replacement, \"ax\"\n" \
ALTINSTR_REPLACEMENT(newinstr1, feature1, 1) \
ALTINSTR_REPLACEMENT(newinstr2, feature2, 2) \
- ".previous"
+ ".popsection"
/*
* This must be included *after* the definition of ALTERNATIVE due to
diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
index f34261296ff..33880342223 100644
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -409,7 +409,7 @@ extern struct apic *apic;
* to enforce the order with in them.
*/
#define apic_driver(sym) \
- static struct apic *__apicdrivers_##sym __used \
+ static const struct apic *__apicdrivers_##sym __used \
__aligned(sizeof(struct apic *)) \
__section(.apicdrivers) = { &sym }
diff --git a/arch/x86/include/asm/atomic.h b/arch/x86/include/asm/atomic.h
index 58cb6d4085f..b6c3b821acf 100644
--- a/arch/x86/include/asm/atomic.h
+++ b/arch/x86/include/asm/atomic.h
@@ -240,30 +240,6 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
return c;
}
-
-/*
- * atomic_dec_if_positive - decrement by 1 if old value positive
- * @v: pointer of type atomic_t
- *
- * The function returns the old value of *v minus 1, even if
- * the atomic variable, v, was not decremented.
- */
-static inline int atomic_dec_if_positive(atomic_t *v)
-{
- int c, old, dec;
- c = atomic_read(v);
- for (;;) {
- dec = c - 1;
- if (unlikely(dec < 0))
- break;
- old = atomic_cmpxchg((v), c, dec);
- if (likely(old == c))
- break;
- c = old;
- }
- return dec;
-}
-
/**
* atomic_inc_short - increment of a short integer
* @v: pointer to type int
@@ -309,9 +285,9 @@ static inline void atomic_or_long(unsigned long *v1, unsigned long v2)
#define smp_mb__after_atomic_inc() barrier()
#ifdef CONFIG_X86_32
-# include "atomic64_32.h"
+# include <asm/atomic64_32.h>
#else
-# include "atomic64_64.h"
+# include <asm/atomic64_64.h>
#endif
#endif /* _ASM_X86_ATOMIC_H */
diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h
index 72f5009deb5..6dfd0195bb5 100644
--- a/arch/x86/include/asm/bitops.h
+++ b/arch/x86/include/asm/bitops.h
@@ -355,7 +355,7 @@ static int test_bit(int nr, const volatile unsigned long *addr);
*/
static inline unsigned long __ffs(unsigned long word)
{
- asm("bsf %1,%0"
+ asm("rep; bsf %1,%0"
: "=r" (word)
: "rm" (word));
return word;
@@ -369,7 +369,7 @@ static inline unsigned long __ffs(unsigned long word)
*/
static inline unsigned long ffz(unsigned long word)
{
- asm("bsf %1,%0"
+ asm("rep; bsf %1,%0"
: "=r" (word)
: "r" (~word));
return word;
@@ -417,10 +417,9 @@ static inline int ffs(int x)
* We cannot do this on 32 bits because at the very least some
* 486 CPUs did not behave this way.
*/
- long tmp = -1;
asm("bsfl %1,%0"
: "=r" (r)
- : "rm" (x), "0" (tmp));
+ : "rm" (x), "0" (-1));
#elif defined(CONFIG_X86_CMOV)
asm("bsfl %1,%0\n\t"
"cmovzl %2,%0"
@@ -459,10 +458,9 @@ static inline int fls(int x)
* We cannot do this on 32 bits because at the very least some
* 486 CPUs did not behave this way.
*/
- long tmp = -1;
asm("bsrl %1,%0"
: "=r" (r)
- : "rm" (x), "0" (tmp));
+ : "rm" (x), "0" (-1));
#elif defined(CONFIG_X86_CMOV)
asm("bsrl %1,%0\n\t"
"cmovzl %2,%0"
@@ -490,13 +488,13 @@ static inline int fls(int x)
#ifdef CONFIG_X86_64
static __always_inline int fls64(__u64 x)
{
- long bitpos = -1;
+ int bitpos = -1;
/*
* AMD64 says BSRQ won't clobber the dest reg if x==0; Intel64 says the
* dest reg is undefined if x==0, but their CPU architect says its
* value is written to set it to the same as before.
*/
- asm("bsrq %1,%0"
+ asm("bsrq %1,%q0"
: "+r" (bitpos)
: "rm" (x));
return bitpos + 1;
diff --git a/arch/x86/include/asm/calling.h b/arch/x86/include/asm/calling.h
index a9e3a740f69..0fa67503391 100644
--- a/arch/x86/include/asm/calling.h
+++ b/arch/x86/include/asm/calling.h
@@ -46,41 +46,39 @@ For 32-bit we have the following conventions - kernel is built with
*/
-#include "dwarf2.h"
+#include <asm/dwarf2.h>
/*
- * 64-bit system call stack frame layout defines and helpers, for
- * assembly code (note that the seemingly unnecessary parentheses
- * are to prevent cpp from inserting spaces in expressions that get
- * passed to macros):
+ * 64-bit system call stack frame layout defines and helpers,
+ * for assembly code:
*/
-#define R15 (0)
-#define R14 (8)
-#define R13 (16)
-#define R12 (24)
-#define RBP (32)
-#define RBX (40)
+#define R15 0
+#define R14 8
+#define R13 16
+#define R12 24
+#define RBP 32
+#define RBX 40
/* arguments: interrupts/non tracing syscalls only save up to here: */
-#define R11 (48)
-#define R10 (56)
-#define R9 (64)
-#define R8 (72)
-#define RAX (80)
-#define RCX (88)
-#define RDX (96)
-#define RSI (104)
-#define RDI (112)
-#define ORIG_RAX (120) /* + error_code */
+#define R11 48
+#define R10 56
+#define R9 64
+#define R8 72
+#define RAX 80
+#define RCX 88
+#define RDX 96
+#define RSI 104
+#define RDI 112
+#define ORIG_RAX 120 /* + error_code */
/* end of arguments */
/* cpu exception frame or undefined in case of fast syscall: */
-#define RIP (128)
-#define CS (136)
-#define EFLAGS (144)
-#define RSP (152)
-#define SS (160)
+#define RIP 128
+#define CS 136
+#define EFLAGS 144
+#define RSP 152
+#define SS 160
#define ARGOFFSET R11
#define SWFRAME ORIG_RAX
diff --git a/arch/x86/include/asm/checksum.h b/arch/x86/include/asm/checksum.h
index 848850fd7d6..5f5bb0f9736 100644
--- a/arch/x86/include/asm/checksum.h
+++ b/arch/x86/include/asm/checksum.h
@@ -1,5 +1,5 @@
#ifdef CONFIG_X86_32
-# include "checksum_32.h"
+# include <asm/checksum_32.h>
#else
-# include "checksum_64.h"
+# include <asm/checksum_64.h>
#endif
diff --git a/arch/x86/include/asm/cmpxchg.h b/arch/x86/include/asm/cmpxchg.h
index 99480e55973..8d871eaddb6 100644
--- a/arch/x86/include/asm/cmpxchg.h
+++ b/arch/x86/include/asm/cmpxchg.h
@@ -138,9 +138,9 @@ extern void __add_wrong_size(void)
__raw_cmpxchg((ptr), (old), (new), (size), "")
#ifdef CONFIG_X86_32
-# include "cmpxchg_32.h"
+# include <asm/cmpxchg_32.h>
#else
-# include "cmpxchg_64.h"
+# include <asm/cmpxchg_64.h>
#endif
#ifdef __HAVE_ARCH_CMPXCHG
diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h
index fedf32b73e6..59c6c401f79 100644
--- a/arch/x86/include/asm/compat.h
+++ b/arch/x86/include/asm/compat.h
@@ -41,6 +41,7 @@ typedef s64 __attribute__((aligned(4))) compat_s64;
typedef u32 compat_uint_t;
typedef u32 compat_ulong_t;
typedef u64 __attribute__((aligned(4))) compat_u64;
+typedef u32 compat_uptr_t;
struct compat_timespec {
compat_time_t tv_sec;
@@ -124,6 +125,78 @@ typedef u32 compat_old_sigset_t; /* at least 32 bits */
typedef u32 compat_sigset_word;
+typedef union compat_sigval {
+ compat_int_t sival_int;
+ compat_uptr_t sival_ptr;
+} compat_sigval_t;
+
+typedef struct compat_siginfo {
+ int si_signo;
+ int si_errno;
+ int si_code;
+
+ union {
+ int _pad[128/sizeof(int) - 3];
+
+ /* kill() */
+ struct {
+ unsigned int _pid; /* sender's pid */
+ unsigned int _uid; /* sender's uid */
+ } _kill;
+
+ /* POSIX.1b timers */
+ struct {
+ compat_timer_t _tid; /* timer id */
+ int _overrun; /* overrun count */
+ compat_sigval_t _sigval; /* same as below */
+ int _sys_private; /* not to be passed to user */
+ int _overrun_incr; /* amount to add to overrun */
+ } _timer;
+
+ /* POSIX.1b signals */
+ struct {
+ unsigned int _pid; /* sender's pid */
+ unsigned int _uid; /* sender's uid */
+ compat_sigval_t _sigval;
+ } _rt;
+
+ /* SIGCHLD */
+ struct {
+ unsigned int _pid; /* which child */
+ unsigned int _uid; /* sender's uid */
+ int _status; /* exit code */
+ compat_clock_t _utime;
+ compat_clock_t _stime;
+ } _sigchld;
+
+ /* SIGCHLD (x32 version) */
+ struct {
+ unsigned int _pid; /* which child */
+ unsigned int _uid; /* sender's uid */
+ int _status; /* exit code */
+ compat_s64 _utime;
+ compat_s64 _stime;
+ } _sigchld_x32;
+
+ /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
+ struct {
+ unsigned int _addr; /* faulting insn/memory ref. */
+ } _sigfault;
+
+ /* SIGPOLL */
+ struct {
+ int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
+ int _fd;
+ } _sigpoll;
+
+ struct {
+ unsigned int _call_addr; /* calling insn */
+ int _syscall; /* triggering system call number */
+ unsigned int _arch; /* AUDIT_ARCH_* of syscall */
+ } _sigsys;
+ } _sifields;
+} compat_siginfo_t;
+
#define COMPAT_OFF_T_MAX 0x7fffffff
#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL
@@ -209,7 +282,6 @@ typedef struct user_regs_struct32 compat_elf_gregset_t;
* as pointers because the syscall entry code will have
* appropriately converted them already.
*/
-typedef u32 compat_uptr_t;
static inline void __user *compat_ptr(compat_uptr_t uptr)
{
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 6b7ee5ff682..8c297aa53ee 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -4,7 +4,9 @@
#ifndef _ASM_X86_CPUFEATURE_H
#define _ASM_X86_CPUFEATURE_H
+#ifndef _ASM_X86_REQUIRED_FEATURES_H
#include <asm/required-features.h>
+#endif
#define NCAPINTS 10 /* N 32-bit words worth of info */
@@ -97,6 +99,7 @@
#define X86_FEATURE_EXTD_APICID (3*32+26) /* has extended APICID (8 bits) */
#define X86_FEATURE_AMD_DCM (3*32+27) /* multi-node processor */
#define X86_FEATURE_APERFMPERF (3*32+28) /* APERFMPERF */
+#define X86_FEATURE_EAGER_FPU (3*32+29) /* "eagerfpu" Non lazy FPU restore */
/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
#define X86_FEATURE_XMM3 (4*32+ 0) /* "pni" SSE-3 */
@@ -209,6 +212,7 @@
#define X86_FEATURE_RTM (9*32+11) /* Restricted Transactional Memory */
#define X86_FEATURE_RDSEED (9*32+18) /* The RDSEED instruction */
#define X86_FEATURE_ADX (9*32+19) /* The ADCX and ADOX instructions */
+#define X86_FEATURE_SMAP (9*32+20) /* Supervisor Mode Access Prevention */
#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
@@ -299,12 +303,14 @@ extern const char * const x86_power_flags[32];
#define cpu_has_xmm4_2 boot_cpu_has(X86_FEATURE_XMM4_2)
#define cpu_has_x2apic boot_cpu_has(X86_FEATURE_X2APIC)
#define cpu_has_xsave boot_cpu_has(X86_FEATURE_XSAVE)
+#define cpu_has_xsaveopt boot_cpu_has(X86_FEATURE_XSAVEOPT)
#define cpu_has_osxsave boot_cpu_has(X86_FEATURE_OSXSAVE)
#define cpu_has_hypervisor boot_cpu_has(X86_FEATURE_HYPERVISOR)
#define cpu_has_pclmulqdq boot_cpu_has(X86_FEATURE_PCLMULQDQ)
#define cpu_has_perfctr_core boot_cpu_has(X86_FEATURE_PERFCTR_CORE)
#define cpu_has_cx8 boot_cpu_has(X86_FEATURE_CX8)
#define cpu_has_cx16 boot_cpu_has(X86_FEATURE_CX16)
+#define cpu_has_eager_fpu boot_cpu_has(X86_FEATURE_EAGER_FPU)
#if defined(CONFIG_X86_INVLPG) || defined(CONFIG_X86_64)
# define cpu_has_invlpg 1
diff --git a/arch/x86/include/asm/fpu-internal.h b/arch/x86/include/asm/fpu-internal.h
index 75f4c6d6a33..831dbb9c6c0 100644
--- a/arch/x86/include/asm/fpu-internal.h
+++ b/arch/x86/include/asm/fpu-internal.h
@@ -12,6 +12,7 @@
#include <linux/kernel_stat.h>
#include <linux/regset.h>
+#include <linux/compat.h>
#include <linux/slab.h>
#include <asm/asm.h>
#include <asm/cpufeature.h>
@@ -20,43 +21,76 @@
#include <asm/user.h>
#include <asm/uaccess.h>
#include <asm/xsave.h>
+#include <asm/smap.h>
-extern unsigned int sig_xstate_size;
+#ifdef CONFIG_X86_64
+# include <asm/sigcontext32.h>
+# include <asm/user32.h>
+int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
+ compat_sigset_t *set, struct pt_regs *regs);
+int ia32_setup_frame(int sig, struct k_sigaction *ka,
+ compat_sigset_t *set, struct pt_regs *regs);
+#else
+# define user_i387_ia32_struct user_i387_struct
+# define user32_fxsr_struct user_fxsr_struct
+# define ia32_setup_frame __setup_frame
+# define ia32_setup_rt_frame __setup_rt_frame
+#endif
+
+extern unsigned int mxcsr_feature_mask;
extern void fpu_init(void);
+extern void eager_fpu_init(void);
DECLARE_PER_CPU(struct task_struct *, fpu_owner_task);
+extern void convert_from_fxsr(struct user_i387_ia32_struct *env,
+ struct task