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Ard Biesheuvel 56067812d5 kbuild: modversions: add infrastructure for emitting relative CRCs 
This add the kbuild infrastructure that will allow architectures to emit
vmlinux symbol CRCs as 32-bit offsets to another location in the kernel
where the actual value is stored. This works around problems with CRCs
being mistaken for relocatable symbols on kernels that self relocate at
runtime (i.e., powerpc with CONFIG_RELOCATABLE=y)

For the kbuild side of things, this comes down to the following:

 - introducing a Kconfig symbol MODULE_REL_CRCS

 - adding a -R switch to genksyms to instruct it to emit the CRC symbols
   as references into the .rodata section

 - making modpost distinguish such references from absolute CRC symbols
   by the section index (SHN_ABS)

 - making kallsyms disregard non-absolute symbols with a __crc_ prefix

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-03 08:28:25 -08:00
..
basic fixdep: faster CONFIG_ search 2016-08-24 22:34:19 +02:00
coccinelle Coccinelle: misc: Add support for devm variant in all modes 2016-12-11 12:08:26 +01:00
dtc scripts/dtc: dt_to_config - kernel config options for a devicetree 2016-07-22 14:48:16 -05:00
gcc-plugins gcc-plugins: update gcc-common.h for gcc-7 2017-01-03 12:08:59 -08:00
gdb Revert "scripts/gdb: add a Radix Tree Parser" 2016-07-15 14:54:27 +09:00
genksyms kbuild: modversions: add infrastructure for emitting relative CRCs 2017-02-03 08:28:25 -08:00
kconfig Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2016-12-17 16:30:24 -08:00
ksymoops
mod kbuild: modversions: add infrastructure for emitting relative CRCs 2017-02-03 08:28:25 -08:00
package Merge branch 'kbuild/rc-fixes' into kbuild/misc 2016-12-11 21:20:34 +01:00
selinux selinux: use the kernel headers when building scripts/selinux 2016-12-21 10:39:25 -05:00
tracing ftrace/scripts: Add helper script to bisect function tracing problem functions 2016-09-21 13:56:55 -04:00
.gitignore KEYS: Reserve an extra certificate symbol for inserting without recompiling 2016-02-26 15:30:20 +00:00
adjust_autoksyms.sh kbuild: fix scripts/adjust_autoksyms.sh* for the no modules case 2016-12-11 22:30:10 +01:00
analyze_suspend.py PM / tools: scripts: AnalyzeSuspend v4.2 2016-07-15 23:34:14 +02:00
asn1_compiler.c ASN.1: fix open failure check on headername 2016-04-06 14:06:48 +01:00
bloat-o-meter scripts/bloat-o-meter: compile .NUMBER regex 2016-12-12 18:55:06 -08:00
bootgraph.pl
check_00index.sh scripts: add a script to check if Documentation/00-INDEX is sane 2016-12-05 14:21:24 -07:00
check_extable.sh
check-lc_ctype.c
checkincludes.pl
checkkconfigsymbols.py checkkconfigsymbols.py: support git's "^" syntax 2016-10-28 08:12:14 -04:00
checkpatch.pl checkpatch: replace __bitwise__ with __bitwise 2016-12-16 00:13:40 +02:00
checkstack.pl
checksyscalls.sh
checkversion.pl
cleanfile
cleanpatch
coccicheck scripts/coccicheck: Update reference for the corresponding documentation 2016-10-11 09:50:43 +02:00
config
conmakehash.c
const_structs.checkpatch const_structs.checkpatch: add frequently used from Julia Lawall's list 2016-10-11 15:06:30 -07:00
decode_stacktrace.sh scripts/decode_stacktrace.sh: Fix address line detection on x86 2016-11-29 14:19:50 +01:00
decodecode
depmod.sh
diffconfig
docproc.c docproc: print a comment about autogeneration for rst output 2016-05-14 09:56:56 -06:00
export_report.pl
extract_xc3028.pl [media] extract_xc3028.pl: move it to scripts/dir 2016-07-17 14:08:12 -03:00
extract-cert.c
extract-ikconfig
extract-module-sig.pl
extract-sys-certs.pl KEYS: Use the symbol value for list size, updated by scripts/insert-sys-cert 2016-02-26 15:32:05 +00:00
extract-vmlinux
faddr2line scripts/faddr2line: Fix "size mismatch" error 2016-10-25 18:40:37 +02:00
gcc-goto.sh
gcc-ld
gcc-plugin.sh gcc-plugins: abort builds cleanly when not supported 2016-08-08 17:49:05 -07:00
gcc-version.sh
gcc-x86_32-has-stack-protector.sh
gcc-x86_64-has-stack-protector.sh scripts/has-stack-protector: add -fno-PIE 2016-11-09 22:28:05 +01:00
gen_initramfs_list.sh initramfs: Escape colons in depfile 2016-09-23 10:35:32 +02:00
get_dvb_firmware [media] doc-rst: move DVB avulse docs to Documentation/media 2016-07-17 14:02:45 -03:00
get_maintainer.pl get_maintainer: look for arbitrary letter prefixes in sections 2016-12-12 18:55:09 -08:00
gfp-translate
headerdep.pl
headers_check.pl headers_check: don't warn about c++ guards 2016-05-24 14:12:48 +10:00
headers_install.sh
headers.sh
insert-sys-cert.c KEYS: Reserve an extra certificate symbol for inserting without recompiling 2016-02-26 15:30:20 +00:00
kallsyms.c kbuild: modversions: add infrastructure for emitting relative CRCs 2017-02-03 08:28:25 -08:00
Kbuild.include kbuild: no gcc-plugins during cc-option tests 2016-08-08 17:49:05 -07:00
kernel-doc kernel-doc: add support for one line inline struct member doc comments 2016-11-16 16:30:27 -07:00
kernel-doc-xml-ref
ld-version.sh ld-version: Drop the 4th and 5th version components 2016-05-13 14:02:05 +02:00
Lindent
link-vmlinux.sh kbuild: minor improvement for thin archives build 2016-11-29 15:58:57 +01:00
Makefile GCC plugin infrastructure 2016-06-07 22:57:10 +02:00
Makefile.asm-generic kbuild: Remove stale asm-generic wrappers 2016-07-07 15:58:45 +02:00
Makefile.build kbuild: modversions: add infrastructure for emitting relative CRCs 2017-02-03 08:28:25 -08:00
Makefile.clean Shared library support 2016-06-07 22:57:10 +02:00
Makefile.dtbinst
Makefile.extrawarn Kbuild: enable -Wmaybe-uninitialized warnings by default 2016-11-11 08:45:08 -08:00
Makefile.fwinst
Makefile.gcc-plugins gcc-plugins: Add latent_entropy plugin 2016-10-10 14:51:44 -07:00
Makefile.headersinst
Makefile.help
Makefile.host Shared library support 2016-06-07 22:57:10 +02:00
Makefile.kasan kasan: turn on -fsanitize-address-use-after-scope 2016-12-12 18:55:09 -08:00
Makefile.lib Merge branch 'akpm' (patches from Andrew) 2016-08-02 21:08:07 -04:00
Makefile.modbuiltin
Makefile.modinst
Makefile.modpost kbuild: add arch specific post-link Makefile 2016-09-09 10:47:00 +02:00
Makefile.modsign
Makefile.ubsan Kbuild: enable -Wmaybe-uninitialized warning for "make W=1" 2016-11-11 08:45:08 -08:00
makelst
markup_oops.pl
mkcompile_h
mkmakefile
mksysmap
mkuboot.sh
mkversion
module-common.lds
namespace.pl kallsyms: add support for relative offsets in kallsyms address table 2016-03-15 16:55:16 -07:00
objdiff
patch-kernel
pnmtologo.c
profile2linkerlist.pl
prune-kernel
recordmcount.c recordmcount: arm: Implement make_nop 2016-11-14 16:43:00 -05:00
recordmcount.h
recordmcount.pl nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00
setlocalversion kbuild: setlocalversion: print error to STDERR 2016-06-20 17:37:45 +02:00
show_delta
sign-file.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2016-12-15 11:41:37 -08:00
sortextable.c powerpc: Build-time sort the exception table 2016-11-14 11:11:51 +11:00
sortextable.h
spelling.txt spelling.txt: "modeled" is spelt correctly 2016-10-07 18:46:30 -07:00
stackdelta
stackusage
tags.sh scripts/tags.sh: handle OMAP platforms properly 2016-12-12 18:55:06 -08:00
unifdef.c
ver_linux ver_linux: rename ver_linux.awk to ver_linux 2016-08-31 13:59:31 +02:00
xen-hypercalls.sh
xz_wrap.sh