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linux/arch/ia64/kernel
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Tony Luck f574c84319 [IA64] fix siglock 
When ia64 converted to using ticket locks, an inline implementation
of trylock/unlock in fsys.S was missed.  This was not noticed because
in most circumstances it simply resulted in using the slow path because
the siglock was apparently not available (under old spinlock rules).

Problems occur when the ticket spinlock has value 0x0 (when first
initialised, or when it wraps around). At this point the fsys.S
code acquires the lock (changing the 0x0 to 0x1. If another process
attempts to get the lock at this point, it will change the value from
0x1 to 0x2 (using new ticket lock rules). Then the fsys.S code will
free the lock using old spinlock rules by writing 0x0 to it. From
here a variety of bad things can happen.

Signed-off-by: Tony Luck <tony.luck@intel.com>
 		2010-09-09 15:16:56 -07:00
..
cpufreq [IA64] Use set_cpus_allowed_ptr 2010-05-18 14:45:53 -07:00
.gitignore [IA64] Cleanup generated file not ignored by .gitignore 2008-08-04 11:06:16 -07:00
Makefile elf coredump: replace ELF_CORE_EXTRA_* macros by functions 2010-03-06 11:26:45 -08:00
Makefile.gate Rename .data.gate to .data..gate. 2010-03-03 11:25:59 +01:00
acpi-ext.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
acpi.c x86, acpi/irq: Introduce apci_isa_irq_to_gsi 2010-05-04 13:34:23 -07:00
asm-offsets.c ia64/pv_ops/xen: paravirtualize read/write ar.itc and ar.itm 2009-03-26 10:50:32 -07:00
audit.c [IA64] Remove COMPAT_IA32 support 2010-02-08 10:42:17 -08:00
brl_emu.c
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crash.c sysctl: Drop & in front of every proc_handler. 2009-11-18 08:37:40 -08:00
crash_dump.c kdump: make elfcorehdr_addr independent of CONFIG_PROC_VMCORE 2008-10-20 08:52:39 -07:00
cyclone.c clocksource: pass clocksource to read() callback 2009-04-21 13:41:47 -07:00
dma-mapping.c [IA64] Fix warning in dma-mapping.c 2009-09-02 09:12:21 -07:00
efi.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
efi_stub.S
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elfcore.c elf coredump: add extended numbering support 2010-03-06 11:26:46 -08:00
entry.S [IA64] Add latest crop of syscalls 2010-08-13 20:55:51 -07:00
entry.h
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err_inject.c sysdev: Pass the attribute to the low level sysdev show/store function 2008-07-21 21:55:02 -07:00
esi.c tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
esi_stub.S
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fsys.S [IA64] fix siglock 2010-09-09 15:16:56 -07:00
fsyscall_gtod_data.h [IA64] generalize attribute of fsyscall_gtod_data 2008-02-04 15:36:36 -08:00
ftrace.c ftrace, ia64: IA64 dynamic ftrace support 2009-01-14 12:11:31 +01:00
gate-data.S Rename .data.gate to .data..gate. 2010-03-03 11:25:59 +01:00
gate.S Rename .data..patch.XXX to .data..patch.XXX. 2010-03-03 11:25:59 +01:00
gate.lds.S Rename .data..patch.XXX to .data..patch.XXX. 2010-03-03 11:25:59 +01:00
head.S percpu: make percpu symbols in ia64 unique 2009-10-29 22:34:14 +09:00
ia64_ksyms.c percpu: remove per_cpu__ prefix. 2009-10-29 22:34:15 +09:00
init_task.c Rename .data.init_task to .data..init_task. 2010-03-03 11:25:58 +01:00
iosapic.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
irq.c genirq: Convert irq_desc.lock to raw_spinlock 2009-12-14 23:55:33 +01:00
irq_ia64.c [IA64] use __ratelimit 2010-05-18 14:45:54 -07:00
irq_lsapic.c [IA64] remove obsolete hw_interrupt_type 2009-06-15 14:35:10 -07:00
ivt.S Merge branch 'for-35' of git://repo.or.cz/linux-kbuild 2010-06-01 08:55:52 -07:00
jprobes.S [IA64] Move include/asm-ia64 to arch/ia64/include/asm 2008-08-01 10:21:21 -07:00
kprobes.c kprobes: Disable booster when CONFIG_PREEMPT=y 2010-02-04 09:36:18 +01:00
machine_kexec.c [IA64] kexec: Unregister MCA handler before kexec 2009-09-14 16:18:17 -07:00
machvec.c x86, ia64: convert to use generic dma_map_ops struct 2009-01-06 14:06:57 +01:00
mca.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mca_asm.S percpu: make percpu symbols in ia64 unique 2009-10-29 22:34:14 +09:00
mca_drv.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mca_drv.h [IA64] mca style cleanup 2008-02-04 15:42:06 -08:00
mca_drv_asm.S [IA64] mca style cleanup 2008-02-04 15:42:06 -08:00
minstate.h Rename .data..patch.XXX to .data..patch.XXX. 2010-03-03 11:25:59 +01:00
module.c [IA64] Convert ia64 to use int-ll64.h 2009-06-17 09:33:49 -07:00
msi_ia64.c PCI: MSI: Restore read_msi_msg_desc(); add get_cached_msi_msg_desc() 2010-07-30 09:41:39 -07:00
nr-irqs.c ia64/pv_ops/xen: define the nubmer of irqs which xen needs. 2008-10-17 10:06:59 -07:00
numa.c [IA64] Minimize per_cpu reservations. 2008-04-08 13:51:35 -07:00
pal.S
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palinfo.c [IA64] Convert ia64 to use int-ll64.h 2009-06-17 09:33:49 -07:00
paravirt.c ia64: remove some warnings. 2009-03-27 11:11:04 -07:00
paravirt_inst.h ia64/pv_ops: paravirtualized instruction checker. 2008-10-17 10:12:54 -07:00
paravirt_patch.c ia64/pv_op/binarypatch: add helper functions to support binary patching for paravirt_ops. 2009-03-26 11:02:31 -07:00
paravirt_patchlist.c [IA64] Fix build error in paravirt_patchlist.c 2009-06-17 09:04:40 -07:00
paravirt_patchlist.h ia64/pv_ops: gate page paravirtualization. 2009-03-26 10:51:02 -07:00
paravirtentry.S Rename .data.read_mostly to .data..read_mostly. 2010-03-03 11:26:00 +01:00
patch.c ia64: remove some warnings. 2009-03-27 11:11:04 -07:00
pci-dma.c Bug Fix arch/ia64/kernel/pci-dma.c: fix recursive dma_supported() call in iommu_dma_supported() 2009-08-11 14:52:10 -07:00
pci-swiotlb.c ia64: remove unnecessary sync_single_range_* in swiotlb_dma_ops 2010-05-27 09:12:52 -07:00
perfmon.c ia64: perfmon: add d_dname method 2010-08-11 00:28:21 -04:00
perfmon_default_smpl.c [IA64] remove remaining __FUNCTION__ occurrences 2008-03-06 09:19:27 -08:00
perfmon_generic.h
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perfmon_itanium.h
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perfmon_mckinley.h [IA64] spelling fixes: arch/ia64/ 2007-05-11 14:55:43 -07:00
perfmon_montecito.h
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process.c Make do_execve() take a const filename pointer 2010-08-17 18:07:43 -07:00
ptrace.c ia64: ptrace_attach_sync_user_rbs: avoid "task->signal != NULL" checks 2010-05-27 09:12:46 -07:00
relocate_kernel.S percpu: make percpu symbols in ia64 unique 2009-10-29 22:34:14 +09:00
sal.c [IA64] Update check_sal_cache_flush to use platform_send_ipi() 2008-06-11 16:40:33 -07:00
salinfo.c [IA64] Use set_cpus_allowed_ptr 2010-05-18 14:45:53 -07:00
setup.c dma-mapping: unify dma_get_cache_alignment implementations 2010-08-11 08:59:21 -07:00
sigframe.h [IA64] Add TIF_RESTORE_SIGMASK 2007-05-08 14:51:59 -07:00
signal.c [IA64] Remove COMPAT_IA32 support 2010-02-08 10:42:17 -08:00
smp.c ia64: convert last user of smp_call_function_mask 2009-09-24 09:34:40 +09:30
smpboot.c x86, ia64, smp: use workqueues unconditionally during do_boot_cpu() 2010-08-09 20:45:06 -07:00
sys_ia64.c Get rid of open-coding in ia64_brk() 2009-12-11 06:44:58 -05:00
time.c timkeeping: Fix update_vsyscall to provide wall_to_monotonic offset 2010-07-27 12:40:54 +02:00
topology.c [IA64] Use set_cpus_allowed_ptr 2010-05-18 14:45:53 -07:00
traps.c [IA64] Remove COMPAT_IA32 support 2010-02-08 10:42:17 -08:00
unaligned.c [IA64] use __ratelimit 2010-05-18 14:45:54 -07:00
uncached.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
unwind.c [IA64] Do not go beyond ARRAY_SIZE of unw.hash 2009-02-25 11:48:04 -08:00
unwind_decoder.c
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unwind_i.h
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vmlinux.lds.S [IA64] beautify vmlinux.lds.h 2010-06-21 15:08:44 -07:00