Peter Collingbourne
9e01e8fd27
UPSTREAM: 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>
(cherry picked from commit 5cf896fb6be3effd9aea455b22213e27be8bdb1d)
Bug: 137200966
Test: booted defconfig + CONFIG_RELR kernel on qemu
Change-Id: I4c55bf5b10bc6c934543c651eca9fc8e260ffc6d
Signed-off-by: Peter Collingbourne <pcc@google.com>
2019-09-17 04:14:27 +00:00
kbuild: move bin2c back to scripts/ from scripts/basic/
2018-07-18 01:18:05 +09:00
fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock
2019-05-08 07:21:51 +02:00
scripts/dtc: consolidate include path options in Makefile
2018-08-22 23:21:36 +09:00
BACKPORT: security: Create "kernel hardening" config area
2019-06-17 19:26:08 +00:00
scripts/gdb: fix lx-version string output
2019-02-12 19:47:20 +01:00
genksyms: Teach parser about 128-bit built-in types
2019-07-31 07:27:02 +02:00
kconfig: Clear "written" flag to avoid data loss
2019-08-06 19:06:53 +02:00
Fix dead URLs to ftp.kernel.org
2017-03-28 16:16:52 +02:00
ANDROID: modpost: add an exception for CFI stubs
2019-05-20 17:46:45 -07:00
kbuild: deb-pkg: fix bindeb-pkg breakage when O= is used
2019-04-17 08:38:45 +02:00
selinux: use kernel linux/socket.h for genheaders and mdp
2019-05-04 09:20:10 +02:00
scripts: Add Python 3 support to tracing/draw_functrace.py
2018-07-29 11:08:38 +09:00
kbuild: move bin2c back to scripts/ from scripts/basic/
2018-07-18 01:18:05 +09:00
kbuild: remove CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX
2018-05-17 22:44:57 +09:00
kbuild: rename *-asn1.[ch] to *.asn1.[ch]
2018-04-07 19:04:02 +09:00
kbuild: move bin2c back to scripts/ from scripts/basic/
2018-07-18 01:18:05 +09:00
syscalls/core, syscalls/x86: Clean up compat syscall stub naming convention
2018-04-09 16:47:28 +02:00
scripts: Switch to more portable Perl shebang
2017-05-14 11:20:44 +09:00
bpf: change eBPF helper doc parsing script to allow for smaller indent
2018-05-17 17:34:43 +02:00
bpfilter: check compiler capability in Kconfig
2018-06-28 13:36:39 +09:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
checkkconfigsymbols.py: support Kconfig's 'imply' statement
2017-02-03 11:49:06 +01:00
checkpatch: add __ro_after_init to known $Attribute
2018-09-04 16:45:02 -07:00
scripts/checkstack.pl: Fix arm64 wrong or unknown architecture
2019-06-25 11:35:58 +08:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple
2018-12-05 09:47:58 -08:00
kbuild: Add a space after ! to prevent parsing as file pattern
2018-08-22 23:21:40 +09:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
coccicheck: return proper error code on fail
2018-08-14 08:58:56 +09:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
const_structs.checkpatch: add frequently used from Julia Lawall's list
2016-10-11 15:06:30 -07:00
scripts/decode_stacktrace: match basepath using shell prefix operator, not regex
2019-09-16 08:21:44 +02:00
scripts/decodecode: make it take multiline Code line
2018-01-31 17:18:34 -08:00
kbuild: modules_install: warn when missing System.map file
2018-09-09 09:14:07 +09:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
scripts/documentation-file-ref-check: ignore sched-pelt false positive
2018-07-02 11:25:00 -06:00
scripts: Switch to more portable Perl shebang
2017-05-14 11:20:44 +09:00
KEYS: Remove unnecessary header #inclusions from extract-cert.c
2015-09-25 16:31:45 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
scripts: teach extract-vmlinux about LZ4 and ZSTD
2018-07-08 09:32:32 +09:00
MAINTAINERS & files: Canonize the e-mails I use at files
2018-05-04 06:21:06 -04:00
scripts/faddr2line: make the new code listing format optional
2018-06-05 09:04:37 -07:00
kbuild: Use ls(1) instead of stat(1) to obtain file size
2018-03-26 02:01:24 +09:00
scripts: Add a script to find unused documentation
2017-10-23 08:01:37 -06:00
jump_label: move 'asm goto' support test to Kconfig
2019-06-04 08:02:34 +02:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
stack-protector: test compiler capability in Kconfig and drop AUTO mode
2018-06-08 18:56:00 +09:00
stack-protector: Fix test with 32-bit userland and CONFIG_64BIT=y
2018-06-25 23:21:13 +09:00
scripts: Switch to more portable Perl shebang
2017-05-14 11:20:44 +09:00
get_maintainer: allow option --mpath <directory> to read all files in <directory>
2018-08-22 10:52:48 -07:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
kbuild: Improve portability of some sed invocations
2018-03-26 02:01:18 +09:00
KEYS: Reserve an extra certificate symbol for inserting without recompiling
2016-02-26 15:30:20 +00:00
kallsyms: exclude kasan local symbols on s390
2019-07-31 07:27:05 +02:00
x86/build: Remove jump label quirk for GCC older than 4.5.2
2018-08-30 11:37:08 +02:00
kbuild: Check for unknown options with cc-option usage in Kconfig and clang
2019-08-25 10:47:56 +02:00
scripts/kernel-doc: Escape all literal braces in regexes
2018-08-06 13:36:20 -06:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
leaking_addresses: check if file name contains address
2018-04-07 08:50:34 +10:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
FROMLIST: kbuild: fix dynamic ftrace with clang LTO
2019-05-20 17:43:20 -07:00
kbuild: Rename HOST_LOADLIBES to KBUILD_HOSTLDLIBS
2018-07-18 01:18:05 +09:00
Kbuild updates for v4.15
2017-11-17 17:45:29 -08:00
FROMLIST: kbuild: fix dynamic ftrace with clang LTO
2019-05-20 17:43:20 -07:00
kbuild: remove deprecated host-progs variable
2018-08-09 21:51:17 +09:00
DeviceTree for 4.15:
2017-11-14 18:25:40 -08:00
Kbuild: suppress packed-not-aligned warning for default setting only
2018-01-18 09:37:53 +09:00
gcc-plugins: Regularize Makefile.gcc-plugins
2018-07-24 16:11:07 -07:00
Kbuild updates for v4.15
2017-11-17 17:45:29 -08:00
kbuild: Rename HOST_LOADLIBES to KBUILD_HOSTLDLIBS
2018-07-18 01:18:05 +09:00
kasan: rework Kconfig settings
2018-02-06 18:32:47 -08:00
kcov: test compiler capability in Kconfig and correct dependency
2018-06-11 09:14:08 +09:00
kbuild: rename LDFLAGS to KBUILD_LDFLAGS
2018-08-24 08:22:08 +09:00
Kbuild: Makefile.modbuiltin: include auto.conf and tristate.conf mandatory
2018-08-03 00:47:00 +09:00
kbuild: remove duplicated comments about PHONY
2018-07-06 22:04:03 +09:00
This is the 4.19.68 stable release
2019-08-25 14:19:34 +02:00
kbuild: remove duplicated comments about PHONY
2018-07-06 22:04:03 +09:00
lib/ubsan: remove null-pointer checks
2018-08-10 20:19:58 -07:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
scripts: Switch to more portable Perl shebang
2017-05-14 11:20:44 +09:00
Kbuild updates for v4.15
2017-11-17 17:45:29 -08:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
module: set .init_array alignment to 8
2017-03-13 09:40:28 -07:00
kbuild: rename built-in.o to built-in.a
2018-03-26 02:01:19 +09:00
scripts: objdiff: Ignore debug info when comparing
2017-03-11 11:13:38 +09:00
parse-maintainers: add ability to specify filenames
2017-11-17 16:10:01 -08:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
FROMLIST: kbuild: fix dynamic ftrace with clang LTO
2019-05-20 17:43:20 -07:00
recordmcount: Fix spurious mcount entries on powerpc
2019-07-31 07:27:03 +02:00
nds32/ftrace: Add RECORD_MCOUNT support
2018-09-04 14:45:18 +08:00
Revert "scripts/setlocalversion: git: Make -dirty check more robust"
2018-11-27 16:13:08 +01:00
sign-file: fix build error in sign-file.c with libressl
2017-02-10 12:43:47 +11:00
powerpc: Build-time sort the exception table
2016-11-14 11:11:51 +11:00
scripts/spdxcheck.py: always open files in binary mode
2018-12-19 19:19:50 +01:00
treewide: correct "differenciate" and "instanciate" typos
2018-08-23 18:48:43 -07:00
scripts/sphinx-pre-install: fix script for RHEL/CentOS
2019-08-16 10:12:44 +02:00
MAINTAINERS & files: Canonize the e-mails I use at files
2018-05-04 06:21:06 -04:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
selftests: add headers_install to lib.mk
2018-09-05 08:12:09 -06:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-07-18 19:32:54 -07:00
UPSTREAM: arm64: Add support for relocating the kernel with RELR relocations
2019-09-17 04:14:27 +00:00
unifdef: use memcpy instead of strncpy
2018-12-08 12:59:06 +01:00
ver_linux: Do not check for ver_linux pattern in version function
2018-07-07 17:44:52 +02:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
9e01e8fd27