Peter Collingbourne 5cf896fb6b arm64: Add support for relocating the kernel with RELR relocations ... RELR is a relocation packing format for relative relocations. The format is described in a generic-abi proposal: https://groups.google.com/d/topic/generic-abi/bX460iggiKg/discussion The LLD linker can be instructed to pack relocations in the RELR format by passing the flag --pack-dyn-relocs=relr. This patch adds a new config option, CONFIG_RELR. Enabling this option instructs the linker to pack vmlinux's relative relocations in the RELR format, and causes the kernel to apply the relocations at startup along with the RELA relocations. RELA relocations still need to be applied because the linker will emit RELA relative relocations if they are unrepresentable in the RELR format (i.e. address not a multiple of 2). Enabling CONFIG_RELR reduces the size of a defconfig kernel image with CONFIG_RANDOMIZE_BASE by 3.5MB/16% uncompressed, or 550KB/5% compressed (lz4). Signed-off-by: Peter Collingbourne <pcc@google.com> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Will Deacon <will@kernel.org>		2019-08-05 12:35:35 +01:00
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atomic	locking/atomics: Use sed(1) instead of non-standard head(1) option	2019-06-25 10:17:07 +02:00
basic	fixdep: check return value of printf() and putchar()	2019-07-01 10:30:39 +09:00
coccinelle	Kbuild updates for v5.3 (2nd)	2019-07-20 09:34:55 -07:00
dtc	Devicetree updates for v5.3:	2019-07-11 18:35:30 -07:00
gcc-plugins	docs: move gcc_plugins.txt to core-api and rename to .rst	2019-07-15 09:20:27 -03:00
gdb	scripts/gdb: add helpers to find and list devices	2019-07-16 19:23:24 -07:00
genksyms	genksyms: Teach parser about 128-bit built-in types	2019-06-24 03:43:03 +09:00
kconfig	kconfig: Clear "written" flag to avoid data loss	2019-08-04 12:44:15 +09:00
ksymoops
mod	kbuild: remove the first line of *.mod files	2019-07-18 02:19:31 +09:00
package	kbuild: create *.mod with full directory path and remove MODVERDIR	2019-07-18 02:19:31 +09:00
selinux	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156	2019-05-30 11:26:35 -07:00
tracing	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166	2019-05-30 11:26:39 -07:00
.gitignore	scripts: remove unnecessary ihex2fw and check-lc_ctypes from .gitignore	2018-12-22 00:37:52 +09:00
adjust_autoksyms.sh	kbuild: remove the first line of *.mod files	2019-07-18 02:19:31 +09:00
asn1_compiler.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36	2019-05-24 17:27:11 +02:00
bin2c.c
bloat-o-meter	bloat-o-meter: ignore __addressable_ symbols	2018-12-28 12:11:44 -08:00
bootgraph.pl	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 391	2019-06-05 17:37:11 +02:00
bpf_helpers_doc.py	bpf: fix script for generating man page on BPF helpers	2019-05-13 01:12:45 +02:00
cc-can-link.sh
check_extable.sh
checkincludes.pl
checkkconfigsymbols.py	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166	2019-05-30 11:26:39 -07:00
checkpatch.pl	checkpatch.pl: warn on duplicate sysctl local variable	2019-07-16 19:23:22 -07:00
checkstack.pl	scripts/checkstack.pl: Fix arm64 wrong or unknown architecture	2019-06-05 02:33:10 +09:00
checksyscalls.sh	checksyscalls: fix up mq_timedreceive and stat exceptions	2019-02-19 21:27:53 +01:00
checkversion.pl
clang-version.sh	kbuild: update comment block of scripts/clang-version.sh	2019-03-04 22:34:54 +09:00
cleanfile
cleanpatch
coccicheck	coccicheck: return proper error code on fail	2018-08-14 08:58:56 +09:00
config
conmakehash.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 54	2019-05-24 17:36:42 +02:00
const_structs.checkpatch
decode_stacktrace.sh	scripts/decode_stacktrace: Accept dash/underscore in modules	2019-07-12 11:05:41 -07:00
decodecode	scripts/decodecode: set ARCH when running natively on arm/arm64	2018-12-28 12:11:44 -08:00
depmod.sh	kbuild: modules_install: warn when missing System.map file	2018-09-09 09:14:07 +09:00
diffconfig
documentation-file-ref-check	scripts/documentation-file-ref-check: ignore output dir	2019-06-14 14:43:01 -06:00
export_report.pl	kbuild: export_report: read modules.order instead of .tmp_versions/*.mod	2019-07-18 02:19:31 +09:00
extract-cert.c
extract-ikconfig
extract-module-sig.pl
extract-sys-certs.pl
extract-vmlinux	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378	2019-06-05 17:37:10 +02:00
extract_xc3028.pl	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 339	2019-06-05 17:37:07 +02:00
faddr2line	scripts/faddr2line: fix location of start_kernel in comment	2018-11-18 10:15:09 -08:00
file-size.sh
find-unused-docs.sh
gcc-goto.sh	jump_label: move 'asm goto' support test to Kconfig	2019-01-06 09:46:51 +09:00
gcc-ld
gcc-plugin.sh
gcc-version.sh	kbuild: clean up scripts/gcc-version.sh	2019-03-04 22:35:04 +09:00
gcc-x86_32-has-stack-protector.sh
gcc-x86_64-has-stack-protector.sh
gen_compile_commands.py	gen_compile_commands: lower the entry count threshold	2019-07-27 12:18:19 +09:00
gen_ksymdeps.sh	kbuild: simplify dependency generation for CONFIG_TRIM_UNUSED_KSYMS	2018-12-01 23:13:14 +09:00
get_abi.pl	doc: ABI scripts: add a SPDX header file	2019-06-21 16:58:37 +02:00
get_dvb_firmware	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61	2019-05-24 17:36:45 +02:00
get_maintainer.pl	get_maintainer: add ability to skip moderated mailing lists	2019-07-16 19:23:22 -07:00
gfp-translate	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166	2019-05-30 11:26:39 -07:00
headerdep.pl
headers_check.pl
headers_install.sh	kbuild: detect missing "WITH Linux-syscall-note" for uapi headers	2019-07-29 10:05:41 +09:00
insert-sys-cert.c
kallsyms.c	kallsyms: exclude kasan local symbols on s390	2019-07-08 02:25:59 +09:00
Kbuild.include	kbuild: remove unused objectify macro	2019-07-27 12:18:19 +09:00
Kconfig.include	kbuild: Check for unknown options with cc-option usage in Kconfig and clang	2019-08-01 00:12:07 +09:00
kernel-doc	kernel-doc: Don't try to mark up function names	2019-06-26 11:14:15 -06:00
ld-version.sh
leaking_addresses.pl	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166	2019-05-30 11:26:39 -07:00
Lindent
link-vmlinux.sh	kbuild: modpost: do not parse unnecessary rules for vmlinux modpost	2019-08-01 00:09:49 +09:00
Makefile	kbuild: remove build_unifdef target in scripts/Makefile	2019-06-15 19:57:01 +09:00
Makefile.asm-generic	kbuild: force all architectures except um to include mandatory-y	2019-03-17 12:56:32 +09:00
Makefile.build	kbuild: split out *.mod out of {single,multi}-used-m rules	2019-07-18 02:19:31 +09:00
Makefile.clean	kbuild: remove deprecated host-progs variable	2018-08-09 21:51:17 +09:00
Makefile.dtbinst
Makefile.extrawarn	kbuild: Remove unnecessary -Wno-unused-value	2019-06-24 03:43:03 +09:00
Makefile.gcc-plugins	gcc-plugins: structleak: Generalize to all variable types	2019-03-04 09:29:41 -08:00
Makefile.headersinst	kbuild: fix 'No such file or directory' warning for headers_install	2019-06-24 03:43:03 +09:00
Makefile.host	Kbuild updates for v5.3	2019-07-12 16:03:16 -07:00
Makefile.kasan	kasan: remove use after scope bugs detection.	2019-03-05 21:07:13 -08:00
Makefile.kcov	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile.lib	kbuild: remove unused single-used-m	2019-07-27 12:18:19 +09:00
Makefile.modbuiltin	kbuild: get rid of kernel/ prefix from in-tree modules.{order,builtin}	2019-07-17 22:39:27 +09:00
Makefile.modinst	kbuild: modinst: read modules.order instead of $(MODVERDIR)/*.mod	2019-07-17 22:39:27 +09:00
Makefile.modpost	kbuild: modpost: do not parse unnecessary rules for vmlinux modpost	2019-08-01 00:09:49 +09:00
Makefile.modsign	kbuild: modsign: read modules.order instead of $(MODVERDIR)/*.mod	2019-07-17 22:39:27 +09:00
Makefile.ubsan	ubsan: Remove vla bound checks.	2019-05-06 11:12:09 -07:00
makelst
markup_oops.pl	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 373	2019-06-05 17:37:10 +02:00
mkcompile_h	kbuild: remove unnecessary in-subshell execution	2019-01-28 09:11:17 +09:00
mkmakefile	kbuild: mkmakefile: generate a simple wrapper of top Makefile	2019-04-02 23:27:38 +09:00
mksysmap
mkuboot.sh
module-common.lds
modules-check.sh	kbuild: get rid of kernel/ prefix from in-tree modules.{order,builtin}	2019-07-17 22:39:27 +09:00
namespace.pl
objdiff	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 199	2019-05-30 11:29:23 -07:00
parse-maintainers.pl
patch-kernel
pnmtologo.c
profile2linkerlist.pl
prune-kernel
recordmcount.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378	2019-06-05 17:37:10 +02:00
recordmcount.h	powerpc updates for 5.3	2019-07-13 16:08:36 -07:00
recordmcount.pl	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166	2019-05-30 11:26:39 -07:00
setlocalversion	scripts/setlocalversion: Improve -dirty check with git-status --no-optional-locks	2018-11-21 23:57:33 +09:00
show_delta	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 438	2019-06-05 17:37:17 +02:00
sign-file.c
sortextable.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378	2019-06-05 17:37:10 +02:00
sortextable.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378	2019-06-05 17:37:10 +02:00
spdxcheck-test.sh	scripts: add spdxcheck.py self test	2018-12-28 12:11:44 -08:00
spdxcheck.py	spdxcheck.py: fix directory structures	2019-06-01 15:51:31 -07:00
spelling.txt	scripts/spelling.txt: add more spellings to spelling.txt	2019-07-12 11:05:41 -07:00
sphinx-pre-install	scripts/sphinx-pre-install: seek for Noto CJK fonts for pdf output	2019-07-17 06:57:52 -03:00
split-man.pl
stackdelta
stackusage
subarch.include	selftests: add headers_install to lib.mk	2018-09-05 08:12:09 -06:00
tags.sh	kbuild: add a flag to force absolute path for srctree	2019-07-11 00:05:09 +09:00
tools-support-relr.sh	arm64: Add support for relocating the kernel with RELR relocations	2019-08-05 12:35:35 +01:00
unifdef.c	unifdef: use memcpy instead of strncpy	2018-11-30 14:45:01 -08:00
ver_linux	ver_linux: Assign constant RE to variable name for clarity	2019-01-22 13:34:35 +01:00
xen-hypercalls.sh
xz_wrap.sh