user/sven/linux.git/scripts/sortextable.c, branch v4.4.29

x86/mm: Expand the exception table logic to allow new handling options

2016-10-31T10:14:00Z

commit 548acf19234dbda5a52d5a8e7e205af46e9da840 upstream. Huge amounts of help from Andy Lutomirski and Borislav Petkov to produce this. Andy provided the inspiration to add classes to the exception table with a clever bit-squeezing trick, Boris pointed out how much cleaner it would all be if we just had a new field. Linus Torvalds blessed the expansion with: ' I'd rather not be clever in order to save just a tiny amount of space in the exception table, which isn't really criticial for anybody. ' The third field is another relative function pointer, this one to a handler that executes the actions. We start out with three handlers: 1: Legacy - just jumps the to fixup IP 2: Fault - provide the trap number in %ax to the fixup code 3: Cleaned up legacy for the uaccess error hack Signed-off-by: Tony Luck Reviewed-by: Borislav Petkov Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/f6af78fcbd348cf4939875cfda9c19689b5e50b8.1455732970.git.tony.luck@intel.com Signed-off-by: Ingo Molnar Signed-off-by: Greg Kroah-Hartman

ARCv2: extable: Enable sorting at build time

2015-06-22T08:36:56Z

Signed-off-by: Vineet Gupta

xtensa: enable sorting extable at build time

2014-04-01T21:35:50Z

Signed-off-by: Max Filippov Acked-by: David Daney

microblaze: extable: sort the exception table at build time

2014-01-24T00:36:50Z

Sort the exception table at build-time rather than during boot. Microblaze is the same case as AARCH64 that's why EM_MICROBLAZE conditional check was added to allow cross-compilation on machines which are not running the latest libc-dev. Inspired by AARCH64 commit adace89562c7 ("arm64: extable: sort the exception table at build time"). Signed-off-by: Michal Simek Acked-by: David Daney Cc: Catalin Marinas Cc: Will Deacon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ARC: extable: Enable sorting at build time

2013-11-25T05:05:23Z

Avoids wasting cycles at boot specially on slower simulators Signed-off-by: Vineet Gupta Cc: Michal Marek Cc: Francois Bedard Cc: linux-kernel@vger.kernel.org Acked-by: David Daney

scripts/sortextable: support objects with more than 64K sections.

2013-11-13T03:09:00Z

Building with a large config and -ffunction-sections results in a large number of sections and sortextable needs to be able to handle that. Implement support for > 64K sections as modpost does. Signed-off-by: Jamie Iles Cc: Rusty Russell Cc: Michal Marek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

scripts: remove unused function in sortextable.c

2013-07-25T14:20:33Z

Signed-off-by: Ramkumar Ramachandra Acked-by: David Daney Signed-off-by: Michal Marek

arm64: extable: sort the exception table at build time

2013-06-12T10:23:01Z

As is done for other architectures, sort the exception table at build-time rather than during boot. Since sortextable appears to be a standalone C program relying on the host elf.h to provide EM_AARCH64, I've had to add a conditional check in order to allow cross-compilation on machines that aren't running a bleeding-edge libc-dev. Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas

ARM: 7568/1: Sort exception table at compile time

2012-11-04T10:31:16Z

Add the ARM machine identifier to sortextable and select the config option so that we can sort the exception table at compile time. sortextable relies on a section named __ex_table existing in the vmlinux, but ARM's linker script places the exception table in the data section. Give the exception table its own section so that sortextable can find it. This allows us to skip the sorting step during boot. Cc: David Daney Signed-off-by: Stephen Boyd Tested-by: Will Deacon Signed-off-by: Russell King

s390/exceptions: switch to relative exception table entries

2012-09-26T13:45:10Z

This is the s390 port of 70627654 "x86, extable: Switch to relative exception table entries". Reduces the size of our exception tables by 50% on 64 bit builds. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky