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Daniel Glöckner ab9e18587f x86, math-emu: fix init_fpu for task != current ... Impact: fix math-emu related crash while using GDB/ptrace init_fpu() calls finit to initialize a task's xstate, while finit always works on the current task. If we use PTRACE_GETFPREGS on another process and both processes did not already use floating point, we get a null pointer exception in finit. This patch creates a new function finit_task that takes a task_struct parameter. finit becomes a wrapper that simply calls finit_task with current. On the plus side this avoids many calls to get_current which would each resolve to an inline assembler mov instruction. An empty finit_task has been added to i387.h to avoid linker errors in case the compiler still emits the call in init_fpu when CONFIG_MATH_EMULATION is not defined. The declaration of finit in i387.h has been removed as the remaining code using this function gets its prototype from fpu_proto.h. Signed-off-by: Daniel Glöckner <dg@emlix.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: "Pallipadi Venkatesh" <venkatesh.pallipadi@intel.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Bill Metzenthen <billm@melbpc.org.au> LKML-Reference: <E1Lew31-0004il-Fg@mailer.emlix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2009-03-04 20:33:16 +01:00
..
bigsmp
es7000	Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-10 06:13:09 -08:00
mach-default	x86: fix apic.c build error on latest git	2009-01-12 19:24:23 +01:00
mach-generic	x86: rename mp_config_table to mpc_table	2009-01-04 13:22:58 +01:00
mach-rdc321x
mach-voyager
numaq	Merge branches 'x86/cleanups', 'x86/mpparse', 'x86/numa' and 'x86/uv' into x86/urgent	2009-01-06 17:39:52 +01:00
summit	Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-10 06:13:09 -08:00
uv	x86: uv_bau.h: fix dubious bitfield	2008-12-30 13:31:37 -08:00
visws
xen	x86: don't apply __supported_pte_mask to non-present ptes	2009-02-04 21:33:09 -08:00
a.out-core.h	x86: include correct %gs in a.out core dump	2009-02-09 14:56:37 +01:00
a.out.h
acpi.h
agp.h
alternative-asm.h
alternative.h
amd_iommu.h
amd_iommu_types.h	AMD IOMMU: add init code for statistic collection	2009-01-03 14:11:58 +01:00
apic.h	x86: apic.c: xapic_icr_read and x2apic_icr_read should be static	2008-12-30 13:31:28 -08:00
apicdef.h
arch_hooks.h
asm.h
atomic.h
atomic_32.h	atomic_t: unify all arch definitions	2009-01-06 15:59:10 -08:00
atomic_64.h	atomic_t: unify all arch definitions	2009-01-06 15:59:10 -08:00
auxvec.h
bios_ebda.h
bitops.h	x86, generic: mark complex bitops.h inlines as __always_inline	2009-01-13 18:56:30 +01:00
boot.h
bootparam.h
bug.h
bugs.h
byteorder.h	byteorder: make swab.h include asm/swab.h like a regular header	2009-01-14 19:56:50 -08:00
cache.h
cacheflush.h
calgary.h
calling.h
checksum.h
checksum_32.h
checksum_64.h
cmpxchg.h
cmpxchg_32.h
cmpxchg_64.h
compat.h
cpu.h
cpufeature.h	x86: add clflush before monitor for Intel 7400 series	2009-02-09 11:15:15 +01:00
cputime.h
current.h
debugreg.h
delay.h
desc.h	x86: fix lguest used_vectors breakage, -v2	2008-12-23 22:37:28 +01:00
desc_defs.h
device.h
div64.h
dma-mapping.h	Documentation: move DMA-mapping.txt to Doc/PCI/	2009-01-29 18:19:29 -08:00
dma.h
dmi.h
ds.h
dwarf2.h
e820.h	headers_check fix: x86, e820.h	2009-01-31 00:16:22 +05:30
edac.h
efi.h	x86: EFI: Back efi_ioremap with init_memory_mapping instead of FIX_MAP	2009-03-04 19:20:16 +01:00
elf.h	[S390] arch_setup_additional_pages arguments	2008-12-25 13:38:54 +01:00
emergency-restart.h
errno.h
fb.h
fcntl.h
fixmap.h
fixmap_32.h
fixmap_64.h	x86: EFI: Back efi_ioremap with init_memory_mapping instead of FIX_MAP	2009-03-04 19:20:16 +01:00
floppy.h
frame.h
ftrace.h
futex.h
gart.h
genapic.h
genapic_32.h	x86: rename mpc_config_processor to mpc_cpu	2009-01-04 13:23:00 +01:00
genapic_64.h
geode.h
gpio.h
hardirq.h
hardirq_32.h
hardirq_64.h
highmem.h
hpet.h
hugetlb.h
hw_irq.h
hypertransport.h
hypervisor.h
i387.h	x86, math-emu: fix init_fpu for task != current	2009-03-04 20:33:16 +01:00
i8253.h
i8259.h
ia32.h
ia32_unistd.h
idle.h
intel_arch_perfmon.h
io.h	x86: fix assumed to be contiguous leaf page tables for kmap_atomic region (take 2)	2009-01-16 13:47:04 +01:00
io_32.h
io_64.h
io_apic.h	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-12-30 16:20:19 -08:00
ioctl.h
ioctls.h
iomap.h	gpu/drm, x86, PAT: io_mapping_create_wc and resource_size_t	2009-02-25 13:09:51 +01:00
iommu.h	Merge branch 'core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-12-30 16:10:19 -08:00
ipcbuf.h
ipi.h
irq.h	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask	2009-01-03 18:53:31 +01:00
irq_regs.h
irq_regs_32.h
irq_regs_64.h
irq_remapping.h
irq_vectors.h
irqflags.h
ist.h
k8.h
Kbuild	byteorder: make swab.h include asm/swab.h like a regular header	2009-01-14 19:56:50 -08:00
kdebug.h
kexec.h
kgdb.h
kmap_types.h
kprobes.h
kvm.h	KVM: Avoid using CONFIG_ in userspace visible headers	2009-02-15 02:47:35 +02:00
kvm_host.h	KVM: change KVM to use IOMMU API	2009-01-03 14:11:07 +01:00
kvm_para.h
kvm_x86_emulate.h	KVM: x86 emulator: add Src2 decode set	2008-12-31 16:55:42 +02:00
ldt.h
lguest.h	x86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_ids	2009-01-03 19:00:55 +01:00
lguest_hcall.h
linkage.h
local.h
math_emu.h	x86: fix math_emu register frame access	2009-02-10 00:39:14 +01:00
mc146818rtc.h
mca.h
mca_dma.h
mce.h	headers_check fix: x86, mce.h	2009-01-31 00:17:13 +05:30
microcode.h
mman.h
mmconfig.h
mmu.h
mmu_context.h
mmu_context_32.h
mmu_context_64.h
mmx.h
mmzone.h
mmzone_32.h	mm: clean up for early_pfn_to_nid()	2009-02-18 15:37:55 -08:00
mmzone_64.h	mm: clean up for early_pfn_to_nid()	2009-02-18 15:37:55 -08:00
module.h
mpspec.h	x86: find nr_irqs_gsi with mp_ioapic_routing	2009-02-09 12:42:59 +01:00
mpspec_def.h	x86: rename all fields of mpc_table mpc_X to X	2009-01-05 14:08:34 +01:00
msgbuf.h
msidef.h
msr-index.h	x86: add MSR_IA32_MISC_ENABLE bits to <asm/msr-index.h>	2009-01-21 15:13:53 -08:00
msr.h	Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-12-28 12:21:10 -08:00
mtrr.h	headers_check fix: x86, mtrr.h	2009-01-31 00:17:39 +05:30
mutex.h
mutex_32.h
mutex_64.h
nmi.h
nops.h
numa.h
numa_32.h
numa_64.h
numaq.h
olpc.h
page.h	x86, pat: fix warn_on_once() while mapping 0-1MB range with /dev/mem	2009-02-12 08:27:27 +01:00
page_32.h
page_64.h
param.h
paravirt.h	Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-02-17 14:27:39 -08:00
parport.h
pat.h
pci-direct.h
pci.h	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6	2008-12-31 23:05:57 +10:30
pci_32.h
pci_64.h
pci_x86.h	x86, pci: move arch/x86/pci/pci.h to arch/x86/include/asm/pci_x86.h	2008-12-29 18:17:36 +01:00
pda.h
percpu.h
pgalloc.h	x86, mm: fix pte_free()	2009-01-23 18:42:06 +01:00
pgtable-2level-defs.h
pgtable-2level.h
pgtable-3level-defs.h
pgtable-3level.h
pgtable.h	x86: don't apply __supported_pte_mask to non-present ptes	2009-02-04 21:33:09 -08:00
pgtable_32.h
pgtable_64.h
poll.h
posix_types.h
posix_types_32.h
posix_types_64.h
prctl.h
processor-cyrix.h
processor-flags.h
processor.h	x86: math_emu info cleanup	2009-02-09 14:56:39 +01:00
proto.h
ptrace-abi.h	headers_check fix: x86, ptrace-abi.h	2009-01-31 00:18:03 +05:30
ptrace.h
pvclock-abi.h
pvclock.h
reboot.h
reboot_fixups.h
required-features.h
resource.h
resume-trace.h
rio.h
rtc.h
rwlock.h
rwsem.h
scatterlist.h
seccomp.h
seccomp_32.h	x86-64: seccomp: fix 32/64 syscall hole	2009-03-02 15:41:30 -08:00
seccomp_64.h	x86-64: seccomp: fix 32/64 syscall hole	2009-03-02 15:41:30 -08:00
sections.h
segment.h
sembuf.h
serial.h
setup.h	x86: rename mpc_config_oemtable to mpc_oemtable	2009-01-04 13:23:02 +01:00
shmbuf.h
shmparam.h
sigcontext.h	headers_check fix: x86, sigcontext.h	2009-01-31 00:18:30 +05:30
sigcontext32.h	headers_check fix: x86, sigcontext32.h	2009-01-31 00:18:58 +05:30
sigframe.h
siginfo.h
signal.h
smp.h	x86: cleanup remaining cpumask_t ops in smpboot code	2009-01-04 15:39:26 +01:00
socket.h
sockios.h
sparsemem.h
spinlock.h	x86: spinlocks: define dummy __raw_spin_is_contended	2009-02-09 08:15:39 -08:00
spinlock_types.h
srat.h
stacktrace.h
stat.h
statfs.h
string.h
string_32.h
string_64.h
suspend.h
suspend_32.h
suspend_64.h
svm.h	KVM: SVM: move svm.h to include/asm	2008-12-31 16:52:28 +02:00
swab.h	headers_check fix: x86, swab.h	2009-01-31 00:19:32 +05:30
swiotlb.h	swiotlb: replace architecture-specific swiotlb.h with linux/swiotlb.h	2008-12-28 10:04:00 +01:00
sync_bitops.h
sys_ia32.h	x86: introducing asm/sys_ia32.h	2008-12-29 13:18:40 +01:00
syscall.h
syscalls.h	Revert "x86: signal: change type of paramter for sys_rt_sigreturn()"	2009-01-21 09:43:18 +01:00
system.h
system_64.h
tce.h
termbits.h
termios.h
therm_throt.h
thread_info.h	Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-12-28 12:21:10 -08:00
time.h
timer.h
timex.h	x86: use standard PIT frequency	2009-01-25 16:57:47 +01:00
tlb.h
tlbflush.h
topology.h	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask	2009-01-03 18:53:31 +01:00
trampoline.h
traps.h	x86: fix math_emu register frame access	2009-02-10 00:39:14 +01:00
tsc.h
types.h
uaccess.h	Merge branch 'core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2008-12-30 16:10:19 -08:00
uaccess_32.h
uaccess_64.h
ucontext.h
unaligned.h
unistd.h
unistd_32.h
unistd_64.h
user.h
user32.h
user_32.h
user_64.h
vdso.h
vga.h
vgtod.h
vic.h
virtext.h	x86: cpu_emergency_svm_disable() function	2008-12-31 16:52:30 +02:00
vm86.h
vmi.h
vmi_time.h
vmware.h
vmx.h	KVM: VMX: move ASM_VMX_* definitions from asm/kvm_host.h to asm/vmx.h	2008-12-31 16:52:28 +02:00
voyager.h
vsyscall.h
xcr.h
xor.h
xor_32.h
xor_64.h
xsave.h