Will Deacon 7e20269647 ARM: hw_breakpoint: disable preemption during debug exception handling ... On ARM, debug exceptions occur in the form of data or prefetch aborts. One difference is that debug exceptions require access to per-cpu banked registers and data structures which are not saved in the low-level exception code. For kernels built with CONFIG_PREEMPT, there is an unlikely scenario that the debug handler ends up running on a different CPU from the one that originally signalled the event, resulting in random data being read from the wrong registers. This patch adds a debug_entry macro to the low-level exception handling code which checks whether the taken exception is a debug exception. If it is, the preempt count for the faulting process is incremented. After the debug handler has finished, the count is decremented. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>		2010-12-06 11:55:56 +00:00
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.gitignore
armksyms.c	ARM: 6314/1: ftrace: allow build without frame pointers on ARM	2010-09-02 15:24:53 +01:00
arthur.c
asm-offsets.c	arm: remove machine_desc.io_pg_offst and .phys_io	2010-10-20 00:27:46 -04:00
atags.c
atags.h
bios32.c	ARM: 6058/1: Add support for PCI domains	2010-04-22 21:38:11 +01:00
calls.S	ARM: 6343/1: wire up fanotify and prlimit64 syscalls on ARM	2010-09-01 10:06:08 +01:00
compat.c	ARM: deprecate support for old way to pass kernel parameters	2010-07-07 16:38:36 +02:00
compat.h	ARM: deprecate support for old way to pass kernel parameters	2010-07-07 16:38:36 +02:00
crash_dump.c	ARM: 6120/1: kdump: implement copy_oldmem_page()	2010-07-09 15:00:53 +01:00
crunch-bits.S
crunch.c	ARM: Convert VFP/Crunch/XscaleCP thread_release() to exit_thread()	2009-12-18 14:53:41 +00:00
debug.S	arm: return both physical and virtual addresses from addruart	2010-10-20 00:27:33 -04:00
dma-isa.c	ARM: dma-isa: request cascade channel after registering it	2009-12-24 18:34:08 +00:00
dma.c	ARM: dma: add /proc/dma support to arch/arm/kernel/dma.c	2010-04-14 13:13:30 +01:00
early_printk.c	ARM: Add an earlyprintk debug console	2009-12-09 10:02:18 +00:00
ecard.c	arm: struct device - replace bus_id with dev_name(), dev_set_name()	2009-01-06 10:44:43 -08:00
ecard.h
elf.c	ARM: 5883/1: Revert "disable NX support for OABI-supporting kernels"	2010-01-18 14:12:11 +00:00
entry-armv.S	ARM: hw_breakpoint: disable preemption during debug exception handling	2010-12-06 11:55:56 +00:00
entry-common.S	Merge branch 'devel-stable' into devel	2010-10-19 22:06:36 +01:00
entry-header.S	ARM: hw_breakpoint: disable preemption during debug exception handling	2010-12-06 11:55:56 +00:00
etm.c	Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl	2010-10-22 10:52:56 -07:00
fiq.c	[ARM] 5421/1: ftrace: fix crash due to tracing of __naked functions	2009-03-12 21:33:03 +00:00
ftrace.c	ARM: 6319/1: ftrace: add Thumb-2 support to dynamic ftrace	2010-09-02 15:28:43 +01:00
head-common.S	Merge branch 'hotplug' into devel	2010-10-18 22:34:47 +01:00
head-nommu.S	ARM: no need for nommu to jump through the hoops that mmu does	2010-10-08 10:07:27 +01:00
head.S	arm: use addruart macro to establish debug mappings	2010-10-20 00:27:34 -04:00
hw_breakpoint.c	ARM: hw_breakpoint: disable preemption during debug exception handling	2010-12-06 11:55:56 +00:00
init_task.c	Use new __init_task_data macro in arch init_task.c files.	2009-09-21 06:27:08 +02:00
io.c
irq.c	arm: Use ARCH_IRQ_INIT_FLAGS	2010-10-16 22:57:38 +02:00
isa.c	sysctl: Drop & in front of every proc_handler.	2009-11-18 08:37:40 -08:00
iwmmxt.S
kgdb.c	kgdb,arm: fix register dump	2010-10-29 13:14:40 -05:00
kprobes-decode.c	ARM: 6412/1: kprobes-decode: add support for MOVW instruction	2010-10-04 19:21:37 +01:00
kprobes.c	Merge branch 'master' into export-slabh	2010-04-05 11:37:28 +09:00
leds.c	ARM: move LED support code out of arch/arm/kernel/time.c	2010-02-15 21:39:12 +00:00
machine_kexec.c	arm: Disable outer (L2) cache in kexec	2010-10-26 11:39:56 +05:30
Makefile	ARM: 6358/1: hw-breakpoint: add HAVE_HW_BREAKPOINT to Kconfig	2010-09-08 10:05:01 +01:00
module.c	ARM: 6340/1: module - additional unwind tables for exit/devexit sections	2010-09-02 15:31:35 +01:00
perf_event.c	ARM: 6469/1: perf-events: squash compiler warning	2010-11-07 16:12:38 +00:00
pmu.c	ARM: 6064/1: pmu: register IRQs at runtime	2010-05-17 11:53:57 +01:00
process.c	Merge branch 'devel-stable' into devel	2010-10-19 22:06:36 +01:00
ptrace.c	ptrace: cleanup arch_ptrace() on ARM	2010-10-27 18:03:10 -07:00
ptrace.h	arm: use generic ptrace_resume code	2010-03-12 15:52:38 -08:00
relocate_kernel.S	ARM: 6119/1: kdump: skip indirection page when crashing	2010-07-09 15:00:52 +01:00
return_address.c	[ARM] 5613/1: implement CALLER_ADDRESSx	2009-07-21 17:21:28 +01:00
setup.c	Merge branches 'at91', 'dcache', 'ftrace', 'hwbpt', 'misc', 'mmci', 's3c', 'st-ux' and 'unwind' into devel	2010-10-18 22:34:25 +01:00
signal.c	ARM: 6051/1: VFP: preserve the HW context when calling signal handlers	2010-04-14 11:11:30 +01:00
signal.h	ARM: Fix signal restart issues with NX and OABI compat	2009-10-25 15:39:37 +00:00
smp_scu.c	Check whether the SCU was already initialised	2009-11-05 10:10:36 +00:00
smp_twd.c	ARM: SMP: Always enable clock event broadcast support	2010-07-27 10:48:42 +01:00
smp.c	Merge branch 'hotplug' into devel	2010-10-18 22:34:47 +01:00
stacktrace.c	ARM: 6468/1: backtrace: fix calculation of thread stack base	2010-11-07 16:12:37 +00:00
sys_arm.c	Make do_execve() take a const filename pointer	2010-08-17 18:07:43 -07:00
sys_oabi-compat.c	Mark arguments to certain syscalls as being const	2010-08-13 16:53:13 -07:00
tcm.c	ARM: 6225/1: make TCM allocation static and common for all archs	2010-07-27 10:42:38 +01:00
tcm.h	ARM: 5580/2: ARM TCM (Tightly-Coupled Memory) support v3	2009-09-15 22:11:05 +01:00
thumbee.c	Fix the teehbr_read function prototype	2008-11-10 14:14:11 +00:00
time.c	ARM: convert arm to arch_gettimeoffset()	2010-03-24 08:08:58 +00:00
traps.c	ARM: arch/arm/kernel/traps.c: Convert sprintf_symbol to %pS	2010-11-07 17:58:40 +00:00
unwind.c	ARM: 6468/1: backtrace: fix calculation of thread stack base	2010-11-07 16:12:37 +00:00
vmlinux.lds.S	ARM: 6465/1: Fix data abort accessing proc_info from __lookup_processor_type	2010-10-27 21:40:29 +01:00
xscale-cp0.c	ARM: Convert VFP/Crunch/XscaleCP thread_release() to exit_thread()	2009-12-18 14:53:41 +00:00