linux.git/arch/arm/kernel/traps.c, branch v2.6.37 Linux kernel source tree ARM: arch/arm/kernel/traps.c: Convert sprintf_symbol to %pS 2010-11-07T17:58:40+00:00 Joe Perches joe@perches.com 2010-11-05T23:12:34+00:00 69448c2a4d23e5883cbca21a173e3eb89f095746 Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: 6207/1: Replace CONFIG_HAS_TLS_REG with HWCAP_TLS and check for it on V6 2010-07-09T13:41:35+00:00 Tony Lindgren tony@atomide.com 2010-07-05T13:53:10+00:00 f159f4ed55bb0fa5470800641e03a13a7e0eae6e The TLS register is only available on ARM1136 r1p0 and later. Set HWCAP_TLS flags if hardware TLS is available and test for it if CONFIG_CPU_32v6K is not set for V6. Note that we set the TLS instruction in __kuser_get_tls dynamically as suggested by Jamie Lokier <jamie@shareable.org>. Also the __switch_to code is optimized out in most cases as suggested by Nicolas Pitre <nico@fluxnic.net>. Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
The TLS register is only available on ARM1136 r1p0 and later.
Set HWCAP_TLS flags if hardware TLS is available and test for
it if CONFIG_CPU_32v6K is not set for V6.

Note that we set the TLS instruction in __kuser_get_tls
dynamically as suggested by Jamie Lokier <jamie@shareable.org>.

Also the __switch_to code is optimized out in most cases as
suggested by Nicolas Pitre <nico@fluxnic.net>.

Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: add notify_die() support 2010-02-15T21:39:14+00:00 Russell King rmk+kernel@arm.linux.org.uk 2010-01-20T17:02:54+00:00 a9221de66d2d94e6e34c3f56bbdd744935020737 Kernel debuggers want to be informed of die() events, so that they can take some action to allow the problem to be inspected. Provide the hook in a similar manner to x86. Note that we currently don't implement the individual trap hooks. Acked-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
Kernel debuggers want to be informed of die() events, so that they
can take some action to allow the problem to be inspected.  Provide
the hook in a similar manner to x86.

Note that we currently don't implement the individual trap hooks.

Acked-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: Use a definition for the userspace cmpxchg emulation syscall 2009-11-10T08:41:12+00:00 Russell King rmk+kernel@arm.linux.org.uk 2009-11-09T23:53:29+00:00 cc20d42986d5807cbe4f5c7c8e3dab2e59ea0db3 Use a definition for the cmpxchg SWI instead of hard-coding the number. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Nicolas Pitre <nico@fluxnic.net> 
Use a definition for the cmpxchg SWI instead of hard-coding the number.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
[ARM] Fix test for unimplemented ARM syscalls 2009-11-08T20:05:28+00:00 Russell King rmk+kernel@arm.linux.org.uk 2009-11-08T20:05:28+00:00 bfd2e29f04e5f048ea62677811d1244badd6661e The existing test always failed since 'no' was always greater than 0x7ff. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
The existing test always failed since 'no' was always greater than
0x7ff.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: Fix signal restart issues with NX and OABI compat 2009-10-25T15:39:37+00:00 Russell King rmk+kernel@arm.linux.org.uk 2009-10-25T15:39:37+00:00 ab72b00734ae4d0b5ff273a0f6c7abeaa3713c76 The signal restarting code was placed on the user stack when OABI compatibility is enabled. Unfortunately, with an EABI NX executable, this results in an attempt to run code from the non-executable stack, which segfaults the application. Fix this by placing the code in the vectors page, along side the signal return code, and directing the application to that code. Reported-by: saeed bishara <saeed.bishara@gmail.com> Tested-by: saeed bishara <saeed.bishara@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
The signal restarting code was placed on the user stack when OABI
compatibility is enabled.  Unfortunately, with an EABI NX executable,
this results in an attempt to run code from the non-executable stack,
which segfaults the application.

Fix this by placing the code in the vectors page, along side the
signal return code, and directing the application to that code.

Reported-by: saeed bishara <saeed.bishara@gmail.com>
Tested-by: saeed bishara <saeed.bishara@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: update die() output 2009-10-11T14:25:05+00:00 Russell King rmk+kernel@arm.linux.org.uk 2009-10-11T14:25:05+00:00 03a6e5bd5ba7d2a37b0bf4327b83d7c83311b0a1 Make die() better match x86: - add printing of the last accessed sysfs file - ensure console_verbose() is called under the lock - ensure we panic outside of oops_exit() Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
Make die() better match x86:
- add printing of the last accessed sysfs file
- ensure console_verbose() is called under the lock
- ensure we panic outside of oops_exit()

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: Dump code/mem oops lines with the appropriate log level 2009-10-11T14:17:53+00:00 Russell King rmk+kernel@arm.linux.org.uk 2009-10-11T14:17:53+00:00 e40c2ec6761d11043ad9f6352679049dbee836eb Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: Dump memory and backtrace as one printk per line 2009-10-11T14:03:11+00:00 Russell King rmk+kernel@arm.linux.org.uk 2009-10-11T14:03:11+00:00 d191fe093f4494e0220f11f4ef2068b9581357b5 dump_mem and dump_backtrace were both using multiple printk statements to print each line. With DEBUG_LL enabled, this causes OOPS to become very difficult to read. Solve this by only using one printk per line. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
dump_mem and dump_backtrace were both using multiple printk statements
to print each line.  With DEBUG_LL enabled, this causes OOPS to become
very difficult to read.  Solve this by only using one printk per line.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: Ensure do_cache_op takes mmap_sem 2009-09-28T17:06:21+00:00 Russell King rmk+kernel@arm.linux.org.uk 2009-09-28T10:41:51+00:00 aa45ee8fc0ee87c1711b5fe8eb3556d06530c39e do_cache_op() uses find_vma() to validate its arguments without holding any locking. This means that the VMA could vanish beneath us. Fix this by taking a read lock on mmap_sem. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
do_cache_op() uses find_vma() to validate its arguments without holding
any locking.  This means that the VMA could vanish beneath us.  Fix
this by taking a read lock on mmap_sem.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>