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Jason Wessel d7161a6534 kgdb, x86, arm, mips, powerpc: ignore user space single stepping 
On the x86 arch, user space single step exceptions should be ignored
if they occur in the kernel space, such as ptrace stepping through a
system call.

First check if it is kgdb that is executing a single step, then ensure
it is not an accidental traversal into the user space, while in kgdb,
any other time the TIF_SINGLESTEP is set, kgdb should ignore the
exception.

On x86, arm, mips and powerpc, the kgdb_contthread usage was
inconsistent with the way single stepping is implemented in the kgdb
core.  The arch specific stub should always set the
kgdb_cpu_doing_single_step correctly if it is single stepping.  This
allows kgdb to correctly process an instruction steps if ptrace
happens to be requesting an instruction step over a system call.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
 		2008-09-26 10:36:41 -05:00
..
.gitignore [ARM] 5194/1: update .gitignore 2008-08-12 19:54:09 +01:00
Makefile kgdb: support for ARCH=arm 2008-07-23 11:30:15 -05:00
armksyms.c ftrace: store mcount address in rec->ip 2008-06-23 22:10:56 +02:00
arthur.c [ARM] arm/kernel/arthur.c: add MODULE_LICENSE 2008-05-17 22:55:16 +01:00
asm-offsets.c arm: use kbuild.h instead of macros in asm-offsets.c 2008-04-29 08:06:29 -07:00
atags.c clean up atags exporting code 2008-05-30 10:33:49 +02:00
atags.h [ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags 2008-02-04 13:21:03 +00:00
bios32.c [ARM] 4577/1: ITE 8152 PCI bridge support 2007-10-15 18:53:59 +01:00
calls.S [ARM] 5193/1: Wire up missing syscalls 2008-08-12 19:54:07 +01:00
compat.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
compat.h [ARM] 3365/1: [cleanup] header for compat.c exported functions 2006-03-15 23:17:30 +00:00
crunch-bits.S [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
crunch.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
debug.S [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
dma-isa.c [ARM] ARRAY_SIZE() cleanup 2008-01-26 14:49:57 +00:00
dma.c [ARM] Export dma_channel_active() 2007-03-31 21:36:53 +01:00
ecard.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
ecard.h [ARM] rpc: ecard: remove deprecated ecard_address() and relatives 2008-07-03 14:25:58 +01:00
entry-armv.S [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
entry-common.S [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
entry-header.S Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
fiq.c [ARM] 3692/1: ARM: coswitch irq handling to the generic implementation 2006-07-01 22:30:09 +01:00
ftrace.c ftrace: store mcount address in rec->ip 2008-06-23 22:10:56 +02:00
head-common.S [ARM] move include/asm-arm to arch/arm/include/asm 2008-08-02 21:32:35 +01:00
head-nommu.S [ARM] Eliminate useless includes of asm/mach-types.h 2008-08-07 09:40:04 +01:00
head.S [ARM] 4849/1: move ATAGS asm definitions 2008-03-06 12:18:18 +00:00
init_task.c [PATCH] take init_files to fs/file.c 2008-05-16 17:22:20 -04:00
io.c [ARM] Fix compiler warnings for memcpy_toio/memcpy_fromio/memset_io 2005-09-24 10:42:06 +01:00
irq.c [ARM] Fix circular include dependency with IRQ headers 2008-08-07 09:39:37 +01:00
isa.c [PATCH] sysctl: remove insert_at_head from register_sysctl 2007-02-14 08:09:59 -08:00
iwmmxt.S [ARM] 3707/1: iwmmxt: use the generic thread notifier infrastructure 2006-07-01 19:56:48 +01:00
kgdb.c kgdb, x86, arm, mips, powerpc: ignore user space single stepping 2008-09-26 10:36:41 -05:00
kprobes-decode.c kprobes/arm: fix decoding of arithmetic immediate instructions 2008-04-28 15:54:55 -04:00
kprobes.c kprobes: improve kretprobe scalability with hashed locking 2008-07-25 10:53:30 -07:00
machine_kexec.c kexec jump: rename KEXEC_CONTROL_CODE_SIZE to KEXEC_CONTROL_PAGE_SIZE 2008-08-15 08:35:42 -07:00
module.c PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures 2008-07-24 10:47:21 -07:00
process.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
ptrace.c Use helpers to obtain task pid in printks (arch code) 2007-10-19 11:53:43 -07:00
ptrace.h [ARM] ptrace: clean up single stepping support 2007-04-21 20:34:58 +01:00
relocate_kernel.S [ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags 2008-02-04 13:21:03 +00:00
setup.c [ARM] prevent crashing when too much RAM installed 2008-08-09 15:38:15 +02:00
signal.c [ARM] 4870/1: fix signal return code when enable CONFIG_OABI_COMPAT 2008-03-20 15:59:31 +00:00
signal.h [ARM] nommu: fixups for the exception vectors 2006-03-27 15:18:50 +01:00
smp.c [ARM] Fix SMP booting with non-zero PHYS_OFFSET 2008-08-07 22:36:59 +01:00
stacktrace.c Merge branch 'core/stacktrace' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2008-07-15 10:31:35 -07:00
stacktrace.h [ARM] Add stacktrace support and make oprofile use it 2007-04-28 09:59:37 +01:00
sys_arm.c unified (weak) sys_pipe implementation 2008-05-03 13:50:33 -07:00
sys_oabi-compat.c [ARM] 4878/1: Add oabi shim for fstatat64 2008-03-28 15:00:46 +00:00
thumbee.c ARMv7: Add support for the ThumbEE state saving/restoring 2008-04-18 22:43:06 +01:00
time.c sysdev: Pass the attribute to the low level sysdev show/store function 2008-07-21 21:55:02 -07:00
traps.c [ARM] traps: don't call undef hook functions with spinlock held 2008-08-12 19:54:07 +01:00
vmlinux.lds.S all archs: consolidate init and exit sections in vmlinux.lds.h 2008-01-28 23:21:17 +01:00
xscale-cp0.c [ARM] 3881/4: xscale: clean up cp0/cp1 handling 2006-12-03 17:52:22 +00:00