linux-toradex.git/arch/arm/kernel, branch v2.6.32 Linux kernel for Apalis and Colibri modules ARM: 5793/1: ARM: Check put_user fail in do_signal when enable OABI_COMPAT 2009-11-23T17:28:23+00:00 Jean PIHET jpihet@mvista.com 2009-11-23T16:03:32+00:00 3336f4f08e0dad7a2b6493c80b49b685141d53ad Using OABI, the call to put_user in do_signal can fail causing the calling app to hang. The solution is to check if put_user fails and force the app to seg fault in that case. Tested with multiple sleeping apps/threads (using the nanosleep syscall) and suspend/resume. Signed-off-by: janboe <janboe.ye at gmail.com> Signed-off-by: Jean Pihet <jpihet@mvista.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
Using OABI, the call to put_user in do_signal can fail causing the
calling app to hang.

The solution is to check if put_user fails and force the app to
seg fault in that case.

Tested with multiple sleeping apps/threads (using the nanosleep syscall)
and suspend/resume.

Signed-off-by: janboe <janboe.ye at gmail.com>
Signed-off-by: Jean Pihet <jpihet@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Merge branch 'for-rmk' of git://linux-arm.org/linux-2.6 2009-11-10T23:37:21+00:00 Russell King rmk+kernel@arm.linux.org.uk 2009-11-10T23:37:21+00:00 65f69e5c16f8eee17b7f71bfad9e8e58f44c7386 






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: 5784/1: fix early boot machine ID mismatch error display
2009-11-08T11:58:54+00:00

Nicolas Pitre
nico@fluxnic.net

2009-11-07T06:35:06+00:00

158bc5af3d49be49c33dc06ff90c4f754c7d4f1b

That code was refactored a long time ago, but one particular label
didn't get adjusted properly which broke the listing of supported
machines.

Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>





That code was refactored a long time ago, but one particular label
didn't get adjusted properly which broke the listing of supported
machines.

Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>







Check whether the SCU was already initialised
2009-11-05T10:10:36+00:00

Catalin Marinas
catalin.marinas@arm.com

2009-11-04T12:16:38+00:00

9b229fa0951fb47cbc178be4bd8e9ef185b38802

If Linux is running in non-secure mode, this register may have been
already initialised and writing to the control register not allowed.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>





If Linux is running in non-secure mode, this register may have been
already initialised and writing to the control register not allowed.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>







ARM: 5776/1: Check compiler version and EABI support when adding ARM unwind support.
2009-11-02T16:59:45+00:00

Claudio Scordino
claudio@evidence.eu.com

2009-10-30T11:06:05+00:00

6603a4fd5195a004dec5f9568e38ff76bae630c1

ARM unwind is known to compile only with EABI and not-buggy compilers.
The problem is not the unwinding information but the -fno-frame-pointer
option added as a result of !CONFIG_FRAME_POINTER.  Now we check the
compiler and raise a #warning in case of wrong compiler.

Signed-off-by: Claudio Scordino <claudio@evidence.eu.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>





ARM unwind is known to compile only with EABI and not-buggy compilers.
The problem is not the unwinding information but the -fno-frame-pointer
option added as a result of !CONFIG_FRAME_POINTER.  Now we check the
compiler and raise a #warning in case of wrong compiler.

Signed-off-by: Claudio Scordino <claudio@evidence.eu.com>
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: 5759/1: Add register information of threads to coredump
2009-10-14T09:33:05+00:00

Artem Bityutskiy
dedekind1@gmail.com

2009-10-13T07:54:30+00:00

cde3f8607350666c4dd120dbbdbd9c70ffb2ea61

Defines ELF_CORE_COPY_TASK_REGS so that CPU register information
of every thread is included in coredump. Without this, only the faulting
thread is coredumped.

Cc: Roger Quadros <ext-roger.quadros@nokia.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Mika Westerberg <mika.westerberg@iki.fi>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>





Defines ELF_CORE_COPY_TASK_REGS so that CPU register information
of every thread is included in coredump. Without this, only the faulting
thread is coredumped.

Cc: Roger Quadros <ext-roger.quadros@nokia.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Mika Westerberg <mika.westerberg@iki.fi>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>







ARM: 5757/1: Thumb-2: Correct "mov.w pc, lr" instruction which is unpredictable
2009-10-14T09:33:05+00:00

Catalin Marinas
catalin.marinas@arm.com

2009-10-12T16:31:20+00:00

a771fe6e4e3e58f2056823ef9c30a554ec48f453

The 32-bit wide variant of "mov pc, reg" in Thumb-2 is unpredictable
causing improper handling of the undefined instructions not caught by
the kernel. This patch adds a movw_pc macro for such situations
(currently only used in call_fpe).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>





The 32-bit wide variant of "mov pc, reg" in Thumb-2 is unpredictable
causing improper handling of the undefined instructions not caught by
the kernel. This patch adds a movw_pc macro for such situations
(currently only used in call_fpe).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>