BMC/Intel-BMC/linux.git/arch/um/include/asm/thread_info.h, branch dev

um: Rework uaccess code

2015-05-31T15:32:36+00:00

Rework UML's uaccess code to reuse as much as possible from asm-generic/uaccess.c. Signed-off-by: Richard Weinberger

um: Remove signal translation and exec_domain

2015-04-12T19:03:28+00:00

As execution domain support is gone we can remove signal translation from the signal code and remove exec_domain from thread_info. Signed-off-by: Richard Weinberger

all arches, signal: move restart_block to struct task_struct

2015-02-13T02:54:12+00:00

If an attacker can cause a controlled kernel stack overflow, overwriting the restart block is a very juicy exploit target. This is because the restart_block is held in the same memory allocation as the kernel stack. Moving the restart block to struct task_struct prevents this exploit by making the restart_block harder to locate. Note that there are other fields in thread_info that are also easy targets, at least on some architectures. It's also a decent simplification, since the restart code is more or less identical on all architectures. [james.hogan@imgtec.com: metag: align thread_info::supervisor_stack] Signed-off-by: Andy Lutomirski Cc: Thomas Gleixner Cc: Al Viro Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Kees Cook Cc: David Miller Acked-by: Richard Weinberger Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Matt Turner Cc: Vineet Gupta Cc: Russell King Cc: Catalin Marinas Cc: Will Deacon Cc: Haavard Skinnemoen Cc: Hans-Christian Egtvedt Cc: Steven Miao Cc: Mark Salter Cc: Aurelien Jacquiot Cc: Mikael Starvik Cc: Jesper Nilsson Cc: David Howells Cc: Richard Kuo Cc: "Luck, Tony" Cc: Geert Uytterhoeven Cc: Michal Simek Cc: Ralf Baechle Cc: Jonas Bonn Cc: "James E.J. Bottomley" Cc: Helge Deller Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Acked-by: Michael Ellerman (powerpc) Tested-by: Michael Ellerman (powerpc) Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: Chen Liqin Cc: Lennox Wu Cc: Chris Metcalf Cc: Guan Xuetao Cc: Chris Zankel Cc: Max Filippov Cc: Oleg Nesterov Cc: Guenter Roeck Signed-off-by: James Hogan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

preempt: Make PREEMPT_ACTIVE generic

2013-11-13T19:21:47+00:00

No point in having this bit defined by architecture. Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20130917183629.090698799@linutronix.de

sanitize tsk_is_polling()

2012-10-01T13:58:13+00:00

Make default just return 0. The current default (checking TIF_POLLING_NRFLAG) is taken to architectures that need it; ones that don't do polling in their idle threads don't need to defined TIF_POLLING_NRFLAG at all. ia64 defined both TS_POLLING (used by its tsk_is_polling()) and TIF_POLLING_NRFLAG (not used at all). Killed the latter... Signed-off-by: Al Viro

um: bury unused _TIF_RESTORE_SIGMASK

2012-05-21T18:22:25+00:00

Signed-off-by: Al Viro

um: add TIF_NOTIFY_RESUME

2012-05-21T18:19:53+00:00

Signed-off-by: Al Viro

freezer: remove now unused TIF_FREEZE

2011-11-21T20:32:25+00:00

Signed-off-by: Tejun Heo Cc: Arnd Bergmann Cc: linux-arch@vger.kernel.org

um: adjust current_thread_info() for newer gcc versions

2011-04-28T18:28:21+00:00

In some cases gcc >= 4.5.2 will optimize away current_thread_info(). To prevent gcc from doing so the stack address has to be obtained via inline asm. Signed-off-by: Richard Weinberger Acked-by: Kirill A. Shutemov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

add descriptive comment for TIF_MEMDIE task flag declaration.

2010-05-14T09:13:27+00:00

Signed-off-by: Andreas Dilger Acked-by: KOSAKI Motohiro Signed-off-by: Jiri Kosina