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linux/arch/ia64/kernel
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Eric W. Biederman 80dce5e374 signal/ia64: Document a conflict with SI_USER with SIGFPE 
Setting si_code to __SI_FAULT results in a userspace seeing
an si_code of 0.  This is the same si_code as SI_USER.  Posix
and common sense requires that SI_USER not be a signal specific
si_code.  As such this use of 0 for the si_code is a pretty
horribly broken ABI.

Given that ia64 is on it's last legs I don't know that it is worth
fixing this, but it is worth documenting what is going on so that
no one decides to copy this bad decision.

This was introduced in 2.3.51 so this mess has had a long time for
people to be able to start depending on it.

Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: linux-ia64@vger.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2017-07-19 19:13:14 -05:00
..
.gitignore
acpi-ext.c ACPICA: Resources: Provide common part for struct acpi_resource_address structures. 2015-01-26 16:09:56 +01:00
acpi.c x86/ACPI: keep x86_cpu_to_acpiid mapping valid on CPU hotplug 2017-02-07 13:34:56 +01:00
asm-offsets.c ia64: Remove unused IA64_TASK_SIGHAND_OFFSET and IA64_SIGHAND_SIGLOCK_OFFSET 2017-04-17 21:53:08 -05:00
audit.c
brl_emu.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
crash.c ia64: reuse append_elf_note() and final_note() functions 2017-05-08 17:15:11 -07:00
crash_dump.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
cyclone.c clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
dma-mapping.c treewide: Constify most dma_map_ops structures 2017-01-24 12:23:35 -05:00
efi.c ia64: efi: use timespec64 for persistent clock 2016-06-17 13:45:05 -07:00
efi_stub.S
elfcore.c switch elf_core_write_extra_data() to dump_emit() 2013-11-09 00:16:23 -05:00
entry.h
entry.S sched/core: Remove unused prefetch_stack() 2017-03-03 01:45:38 +01:00
err_inject.c ia64/err-inject: Convert to hotplug state machine 2016-11-09 23:45:29 +01:00
esi.c
esi_stub.S ia64: move exports to definitions 2016-08-07 23:55:50 -04:00
fsys.S ia64: remove paravirt code 2015-06-10 14:26:32 -07:00
fsyscall_gtod_data.h clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
ftrace.c ia64: ftrace: Fix the comments for ftrace_modify_code() 2015-12-23 14:27:23 -05:00
gate-data.S
gate.lds.S ia64: remove paravirt code 2015-06-10 14:26:32 -07:00
gate.S ia64: remove paravirt code 2015-06-10 14:26:32 -07:00
head.S ia64: Convert vtime to use nsec units directly 2017-02-01 09:14:02 +01:00
ia64_ksyms.c ia64: move exports to definitions 2016-08-07 23:55:50 -04:00
init_task.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
iosapic.c ia64: rename nop->iosapic_nop 2016-01-12 20:46:47 +02:00
irq.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
irq_ia64.c ia64: remove deprecated cpus_ usage. 2015-03-10 13:54:38 +10:30
irq_lsapic.c
ivt.S ia64: move exports to definitions 2016-08-07 23:55:50 -04:00
jprobes.S
kprobes.c ia64: ensure exception table search users include extable.h 2017-01-24 12:41:45 -05:00
machine_kexec.c kexec: move vmcoreinfo out of the kernel's .bss section 2017-07-12 16:25:59 -07:00
machvec.c
Makefile kbuild: Consolidate header generation from ASM offset information 2017-04-13 05:43:37 +09:00
Makefile.gate ia64: thin archives fix linking 2017-06-30 09:03:04 +09:00
mca.c ia64: move inline before return type 2017-07-12 16:26:04 -07:00
mca_asm.S
mca_drv.c Remove cast for kmalloc return value 2013-03-19 16:14:53 -07:00
mca_drv.h
mca_drv_asm.S
minstate.h ia64: remove paravirt code 2015-06-10 14:26:32 -07:00
module.c ia64: fix module loading for gcc-5.4 2017-05-01 14:59:04 -07:00
msi_ia64.c ia64/irq: Use access helper irq_data_get_affinity_mask() 2015-07-27 13:36:37 +02:00
nr-irqs.c ia64/xen: Remove Xen support for ia64 2013-12-10 16:11:07 -08:00
numa.c ia64: fix up obsolete cpu function usage. 2015-03-05 15:25:04 +10:30
pal.S ia64: move exports to definitions 2016-08-07 23:55:50 -04:00
palinfo.c ia64/palinfo: Convert to hotplug state machine 2016-11-09 23:45:30 +01:00
patch.c ia64: remove paravirt code 2015-06-10 14:26:32 -07:00
pci-dma.c treewide: Constify most dma_map_ops structures 2017-01-24 12:23:35 -05:00
pci-swiotlb.c treewide: Constify most dma_map_ops structures 2017-01-24 12:23:35 -05:00
perfmon.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
perfmon_default_smpl.c
perfmon_generic.h
perfmon_itanium.h
perfmon_mckinley.h
perfmon_montecito.h
process.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
ptrace.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
relocate_kernel.S
sal.c
salinfo.c ia64/salinfo: Replace racy task affinity logic 2017-04-15 12:20:53 +02:00
setup.c sched/headers: Move task->mm handling methods to <linux/sched/mm.h> 2017-03-03 01:43:28 +01:00
sigframe.h
signal.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
smp.c ia64: fix up obsolete cpu function usage. 2015-03-05 15:25:04 +10:30
smpboot.c arch/hotplug: Call into idle with a proper state 2016-03-01 20:36:57 +01:00
stacktrace.c
sys_ia64.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
time.c sched/headers: Prepare to move cputime functionality from <linux/sched.h> into <linux/sched/cputime.h> 2017-03-02 08:42:39 +01:00
topology.c ia64/topology: Remove cpus_allowed manipulation 2017-04-15 12:20:52 +02:00
traps.c signal/ia64: Document a conflict with SI_USER with SIGFPE 2017-07-19 19:13:14 -05:00
unaligned.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
uncached.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/nmi.h> 2017-03-02 08:42:30 +01:00
unwind.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
unwind_decoder.c
unwind_i.h
vmlinux.lds.S debug: Fix __bug_table[] in arch linker scripts 2017-04-03 10:22:40 +02:00