Tony Luck
548acf1923
x86/mm: Expand the exception table logic to allow new handling options ...
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 <tony.luck@intel.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/f6af78fcbd348cf4939875cfda9c19689b5e50b8.1455732970.git.tony.luck@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-18 09:21:46 +01:00
fixdep: constify strrcmp arguments
2015-12-07 12:42:55 +01:00
coccinelle: tests: unsigned value cannot be lesser than zero
2016-01-12 17:47:47 +01:00
scripts/dtc: Update to upstream version 9d3649bd3be245c9
2015-04-29 17:17:27 -05:00
scripts/gdb: remove useless global instruction
2015-06-30 19:44:58 -07:00
genksyms: Handle string literals with spaces in reference files
2015-12-09 15:19:23 +01:00
kconfig: fix qconf segfault by deleting heap objects
2016-01-11 09:45:08 +01:00
powerpc: Simplify module TOC handling
2016-01-21 14:10:56 +11:00
package Makefile: fix perf-tar targets when outdir is set
2015-11-24 17:49:42 +01:00
selinux: explicitly declare the role "base_r"
2015-07-13 13:32:00 -04:00
DocBook: Use a fixed encoding for output
2015-09-28 01:31:48 -06:00
ASN.1: Copy string names to tokens in ASN.1 compiler
2015-08-07 16:26:13 +01:00
scripts/bloat-o-meter: fix python3 syntax error
2016-01-14 16:00:49 -08:00
DocBook: Use a fixed encoding for output
2015-09-28 01:31:48 -06:00
scripts: add check_extable.sh script.
2015-04-13 21:03:02 +09:30
checkkconfigsymbols.py: find similar symbols
2015-12-14 10:54:23 -08:00
checkpatch: fix a number of COMPLEX_MACRO false positives
2016-01-20 17:09:18 -08:00
x86/asm/entry: Move the arch/x86/syscalls/ definitions to arch/x86/entry/syscalls/
2015-06-04 07:37:37 +02:00
Coccinelle: fix incorrect -include option transformation
2015-10-26 21:32:09 +01:00
scripts: decode_stacktrace: fix ARM architecture decoding
2015-09-04 16:54:41 -07:00
vfs,ext2: remove CONFIG_EXT2_FS_XIP and rename CONFIG_FS_XIP to CONFIG_FS_DAX
2015-02-16 17:56:04 -08:00
KEYS: Remove unnecessary header #inclusions from extract-cert.c
2015-09-25 16:31:45 +01:00
scripts/extract-ikconfig: Support LZ4-compressed images.
2015-04-15 14:01:12 +02:00
KEYS: Provide a script to extract a module signature
2015-10-21 15:18:36 +01:00
KEYS: Provide a script to extract the sys cert list from a vmlinux file
2015-10-21 15:18:36 +01:00
scripts/get_maintainer.pl: handle file names beginning with ./
2016-01-20 17:09:18 -08:00
CRIS: Fix headers_install
2014-12-20 00:01:12 +01:00
Kbuild: kallsyms: drop special handling of pre-3.0 GCC symbols
2015-04-07 13:04:51 +02:00
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2015-09-08 14:12:19 -07:00
A relatively boring cycle in the docs tree. There's a few kernel-doc
2016-01-17 11:55:07 -08:00
scripts/kernel-doc: Adding cross-reference links to html documentation.
2015-08-16 22:11:16 -06:00
ld-version: Fix it on Fedora
2016-01-08 16:34:27 +01:00
scripts/Lindent: handle missing indent gracefully
2015-09-04 16:54:41 -07:00
um: link with -lpthread
2016-01-10 21:49:48 +01:00
DocBook: Use a fixed encoding for output
2015-09-28 01:31:48 -06:00
kbuild: Allow to specify composite modules with modname-m
2015-11-25 11:23:25 +01:00
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2015-02-19 10:07:08 -08:00
kbuild: include $(src)/Makefile rather than $(obj)/Makefile
2015-04-02 16:42:08 +02:00
kbuild: Demote 'sign-compare' warning to W=2
2016-01-12 16:07:03 +01:00
kbuild: include $(src)/Makefile rather than $(obj)/Makefile
2015-04-02 16:42:08 +02:00
arm64: add KASAN support
2015-10-12 17:46:36 +01:00
UBSAN: run-time undefined behavior sanity checker
2016-01-20 17:09:18 -08:00
modsign: Abort modules_install when signing fails
2015-08-07 16:26:13 +01:00
modpost: Add flag -E for making section mismatches fatal
2015-10-06 10:46:21 +10:30
UBSAN: run-time undefined behavior sanity checker
2016-01-20 17:09:18 -08:00
mksysmap: Add h8300 local symbol pattern
2015-06-23 13:35:47 +09:00
kernel: add support for .init_array.* constructors
2015-02-13 21:21:42 -08:00
scripts: add "prune-kernel" script to clean up old kernel images
2016-02-09 10:09:52 -08:00
ftrace/scripts: Fix incorrect use of sprintf in recordmcount
2016-01-04 11:13:16 -05:00
recordmcount: Fix endianness handling bug for nop_mcount
2015-11-03 10:45:26 -05:00
scripts/recordmcount.pl: support data in text section on powerpc
2016-01-13 12:35:41 +11:00
MODSIGN: Change from CMS to PKCS#7 signing if the openssl is too old
2015-09-25 16:31:46 +01:00
x86/mm: Expand the exception table logic to allow new handling options
2016-02-18 09:21:46 +01:00
scripts/spelling.txt: add some typo-words
2015-09-04 16:54:41 -07:00
scripts: add stackdelta script
2015-08-28 17:04:40 +02:00
scripts: add stackusage script
2015-08-28 17:04:40 +02:00
Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2016-01-20 10:10:23 -08:00
ver_linux: proc/modules, limit text processing to 'sed'
2015-10-17 21:55:26 -07:00
xen: build infrastructure for generating hypercall depending symbols
2015-03-16 14:49:13 +00:00
548acf1923