linux-toradex.git/arch/mips/kernel/signal32.c, branch v3.1.2

MIPS: Fix GCC-4.6 'set but not used' warning in signal*.c

2011-03-14T20:07:25+00:00

GCC-4.6 can find more unused code than previous versions could.

In the case of protected_restore_fp_context{,32}, the variable tmp is
really used.  Its use is tricky in that we really care about the side
effects of the __put_user() calls.  So we must mark tmp with
__maybe_unused to quiet the warning.

Signed-off-by: David Daney 
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2035/
Signed-off-by: Ralf Baechle

MIPS: Move signal trampolines off of the stack.

2010-04-12T16:26:15+00:00

This is a follow on to the vdso patch.

Since all processes now have signal trampolines permanently mapped, we
can use those instead of putting the trampoline on the stack and
invalidating the corresponding icache across all CPUs.  We also get rid
of a bunch of ICACHE_REFILLS_WORKAROUND_WAR code.

[Ralf: GDB 7.1 which has the necessary modifications to allow backtracing
over signal frames will supposedly be released tomorrow.  The old signal
frame format obsoleted by this patch exists in two variations, for sane
processors and for those requiring ICACHE_REFILLS_WORKAROUND_WAR.  So
there was never a GDB which did support backtracing over signal frames
on all MIPS systems.  This convinved me this series should be applied and
pushed upstream as soon as possible.]

Signed-off-by: David Daney 
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/974/
Signed-off-by: Ralf Baechle

MIPS: Cleanup signal code initialization

2009-12-17T01:57:32+00:00

Signed-off-by: Ralf Baechle 
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/709/

MIPS: CVE-2009-0029: Enable syscall wrappers.

2009-02-27T17:56:35+00:00

Thanks to David Daney helping with debugging and testing.

Signed-off-by: Ralf Baechle 
Signed-off-by: David Daney

MIPS: Use compat_sys_ptrace

2008-10-11T15:18:41+00:00

This replaces mips's sys_ptrace32 with a compat_arch_ptrace and
enables the new generic definition of compat_sys_ptrace instead.

Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Ralf Baechle

[MIPS] Fix "no space between function name and open parenthesis" warnings.

2007-10-11T22:46:15+00:00

Signed-off-by: Ralf Baechle

[MIPS] remove some duplicate includes

2007-07-31T20:35:33+00:00

This patch removes some duplicate includes from arch/mips/

Signed-off-by: Jesper Juhl 
Signed-off-by: Ralf Baechle

[MIPS] use compat_siginfo in rt_sigframe_n32

2007-06-26T17:57:33+00:00

Signed-off-by: Pavel Kiryukhin 
Signed-off-by: Ralf Baechle

header cleaning: don't include smp_lock.h when not used

2007-05-08T18:15:07+00:00

Remove includes of  where it is not used/needed.
Suggested by Al Viro.

Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
sparc64, and arm (all 59 defconfigs).

Signed-off-by: Randy Dunlap 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[MIPS] Retry {save,restore}_fp_context if failed in atomic context.

2007-04-20T13:58:37+00:00

The save_fp_context()/restore_fp_context() might sleep on accessing
user stack and therefore might lose FPU ownership in middle of them.

If these function failed due to "in_atomic" test in do_page_fault,
touch the sigcontext area in non-atomic context and retry these
save/restore operation.

This is a replacement of a (broken) fix which was titled "Allow CpU
exception in kernel partially".

Signed-off-by: Atsushi Nemoto 
Signed-off-by: Ralf Baechle