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linux-next/arch/x86
Roland McGrath e1f287735c x86 single_step: TIF_FORCED_TF
This changes the single-step support to use a new thread_info flag
TIF_FORCED_TF instead of the PT_DTRACE flag in task_struct.ptrace.
This keeps arch implementation uses out of this non-arch field.

This changes the ptrace access to eflags to mask TF and maintain
the TIF_FORCED_TF flag directly if userland sets TF, instead of
relying on ptrace_signal_deliver.  The 64-bit and 32-bit kernels
are harmonized on this same behavior.  The ptrace_signal_deliver
approach works now, but this change makes the low-level register
access code reliable when called from different contexts than a
ptrace stop, which will be possible in the future.

The 64-bit do_debug exception handler is also changed not to clear TF
from user-mode registers.  This matches the 32-bit kernel's behavior.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30 13:30:50 +01:00
..
boot x86 vDSO: absolute relocs 2008-01-30 13:30:42 +01:00
configs x86: 64-bit, make sparsemem vmemmap the only memory model 2008-01-30 13:30:47 +01:00
crypto [CRYPTO] twofish: Merge common glue code 2008-01-14 17:07:57 +11:00
ia32 x86 single_step: TIF_FORCED_TF 2008-01-30 13:30:50 +01:00
kernel x86 single_step: TIF_FORCED_TF 2008-01-30 13:30:50 +01:00
lguest x86: use u32 for some lapic functions 2008-01-30 13:30:15 +01:00
lib x86: disable preemption in delay_tsc() 2007-11-14 18:45:44 -08:00
mach-default spelling fixes: arch/i386/ 2007-10-20 01:13:56 +02:00
mach-es7000 i386: es7000 minor cleanups 2007-10-17 20:16:15 +02:00
mach-generic spelling fixes: arch/i386/ 2007-10-20 01:13:56 +02:00
mach-visws x86: cleanup mpspec variants 2008-01-30 13:30:35 +01:00
mach-voyager x86: cleanup tlbflush.h variants 2008-01-30 13:30:35 +01:00
math-emu x86: lindent arch/i386/math-emu, cleanup 2008-01-30 13:30:12 +01:00
mm x86: kmap_atomic() debugging 2008-01-30 13:30:47 +01:00
oprofile Driver core: change sysdev classes to use dynamic kobject names 2008-01-24 20:40:40 -08:00
pci Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86 2007-11-26 19:41:28 -08:00
power i386: move power 2007-10-11 11:16:34 +02:00
vdso x86 vDSO: canonicalize sysenter .eh_frame 2008-01-30 13:30:44 +01:00
video i386: move video 2007-10-11 11:16:56 +02:00
xen x86 vDSO: consolidate vdso32 2008-01-30 13:30:43 +01:00
Kconfig x86: 64-bit, make sparsemem vmemmap the only memory model 2008-01-30 13:30:47 +01:00
Kconfig.cpu x86: arch/x86/Kconfig.cpu unification 2007-11-12 21:02:19 +01:00
Kconfig.debug x86: make io_delay=0xed the default 2008-01-30 13:30:05 +01:00
Makefile x86: correctly set UTS_MACHINE for "make ARCH=x86" 2007-11-26 17:38:53 -08:00
Makefile_32 x86 vDSO: i386 vdso32 install 2008-01-30 13:30:42 +01:00
Makefile_32.cpu x86: move i386 and x86_64 Makefiles to arch/x86 2007-10-25 22:27:34 +02:00
Makefile_64 x86 vDSO: ia32 vsyscall removal 2008-01-30 13:30:44 +01:00