Mark Rutland d6e2cc5647 arm64: extable: add `type` and `data` fields ... Subsequent patches will add specialized handlers for fixups, in addition to the simple PC fixup and BPF handlers we have today. In preparation, this patch adds a new `type` field to struct exception_table_entry, and uses this to distinguish the fixup and BPF cases. A `data` field is also added so that subsequent patches can associate data specific to each exception site (e.g. register numbers). Handlers are named ex_handler_*() for consistency, following the exmaple of x86. At the same time, get_ex_fixup() is split out into a helper so that it can be used by other ex_handler_*() functions ins subsequent patches. This patch will increase the size of the exception tables, which will be remedied by subsequent patches removing redundant fixup code. There should be no functional change as a result of this patch. Since each entry is now 12 bytes in size, we must reduce the alignment of each entry from `.align 3` (i.e. 8 bytes) to `.align 2` (i.e. 4 bytes), which is the natrual alignment of the `insn` and `fixup` fields. The current 8-byte alignment is a holdover from when the `insn` and `fixup` fields was 8 bytes, and while not harmful has not been necessary since commit: 6c94f27ac8 ("arm64: switch to relative exception tables") Similarly, RO_EXCEPTION_TABLE_ALIGN is dropped to 4 bytes. Concurrently with this patch, x86's exception table entry format is being updated (similarly to a 12-byte format, with 32-bytes of absolute data). Once both have been merged it should be possible to unify the sorttable logic for the two. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: James Morse <james.morse@arm.com> Cc: Jean-Philippe Brucker <jean-philippe@linaro.org> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20211019160219.5202-11-mark.rutland@arm.com Signed-off-by: Will Deacon <will@kernel.org>		2021-10-21 10:45:22 +01:00
..
atomic	locking/atomic: add arch_atomic_long*()	2021-07-16 18:46:45 +02:00
basic	.gitignore: prefix local generated files with a slash	2021-05-02 00:43:35 +09:00
clang-tools	gen_compile_commands: fix missing 'sys' package	2021-09-19 10:13:03 +09:00
coccinelle	scripts: coccinelle: allow list_entry_is_head() to use pos	2021-08-08 22:00:49 +02:00
dtc	.gitignore: prefix local generated files with a slash	2021-05-02 00:43:35 +09:00
dummy-tools	kbuild: dummy-tools: adjust to stricter stackprotector check	2021-05-17 12:10:03 +09:00
gcc-plugins	scripts: make some scripts executable	2021-08-10 09:13:25 +09:00
gdb	scripts/gdb: add lx_current support for arm64	2021-05-07 00:26:33 -07:00
genksyms	.gitignore: prefix local generated files with a slash	2021-05-02 00:43:35 +09:00
kconfig	scripts: merge_config: add strict mode to fail upon any redefinition	2021-08-10 08:23:39 +09:00
ksymoops	…
mod	Kbuild updates for v5.15	2021-09-03 15:33:47 -07:00
package	kbuild: buildtar: add riscv support	2021-03-29 23:13:30 -07:00
selinux	…
tracing	scripts/tracing: fix the bug that can't parse raw_trace_func	2021-08-04 17:49:26 -04:00
.gitignore	.gitignore: prefix local generated files with a slash	2021-05-02 00:43:35 +09:00
Kbuild.include	kbuild: warn if FORCE is missing for if_changed(_dep,_rule) and filechk	2021-09-03 08:17:19 +09:00
Kconfig.include	kbuild: check the minimum assembler version in Kconfig	2021-04-25 05:14:41 +09:00
Lindent	…
Makefile	Fix CVE-2020-26541	2021-04-26 08:38:10 -07:00
Makefile.asm-generic	kbuild: prefix $(srctree)/ to some included Makefiles	2021-03-15 19:20:48 +09:00
Makefile.build	kbuild: remove stale *.symversions	2021-09-03 08:17:20 +09:00
Makefile.clang	kbuild: Add -Werror=ignored-optimization-argument to CLANG_FLAGS	2021-09-19 10:55:18 +09:00
Makefile.clean	kbuild: prefix $(srctree)/ to some included Makefiles	2021-03-15 19:20:48 +09:00
Makefile.compiler	kbuild: remove TMPO from try-run	2021-04-25 05:25:56 +09:00
Makefile.dtbinst	kbuild: prefix $(srctree)/ to some included Makefiles	2021-03-15 19:20:48 +09:00
Makefile.extrawarn	Makefile.extrawarn: remove -Wnested-externs warning	2020-12-08 23:30:05 +09:00
Makefile.gcc-plugins	…
Makefile.headersinst	kbuild: prefix $(srctree)/ to some included Makefiles	2021-03-15 19:20:48 +09:00
Makefile.host	…
Makefile.kasan	kasan: always respect CONFIG_KASAN_STACK	2021-09-24 16:13:35 -07:00
Makefile.kcov	…
Makefile.kcsan	…
Makefile.lib	Kbuild updates for v5.15	2021-09-03 15:33:47 -07:00
Makefile.modfinal	kbuild: Fix TRIM_UNUSED_KSYMS with LTO_CLANG	2021-09-03 08:12:39 +09:00
Makefile.modinst	kbuild: add support for zstd compressed modules	2021-04-25 05:25:06 +09:00
Makefile.modpost	kbuild: Fix comment typo in scripts/Makefile.modpost	2021-09-19 10:14:19 +09:00
Makefile.package	kbuild: deb-pkg: change the source package name to linux-upstream	2021-04-25 05:30:45 +09:00
Makefile.ubsan	ubsan: remove overflow checks	2021-02-26 09:41:05 -08:00
Makefile.userprogs	…
adjust_autoksyms.sh	kbuild: redo fake deps at include/ksym/*.h	2021-09-03 08:17:21 +09:00
as-version.sh	kbuild: Switch to 'f' variants of integrated assembler flag	2021-09-03 08:17:20 +09:00
asn1_compiler.c	…
bin2c.c	…
bloat-o-meter	scripts: switch explicitly to Python 3	2021-01-22 06:34:44 +09:00
bootgraph.pl	…
bpf_doc.py	bpf: Introduce bpf timers.	2021-07-15 22:31:10 +02:00
cc-can-link.sh	…
cc-version.sh	kbuild: collect minimum tool versions into scripts/min-tool-version.sh	2021-04-25 05:14:26 +09:00
check-sysctl-docs	…
check_extable.sh	scripts: check_extable: fix typo in user error message	2021-09-08 11:50:28 -07:00
checkdeclares.pl	scripts: make some scripts executable	2021-08-10 09:13:25 +09:00
checkincludes.pl	…
checkkconfigsymbols.py	checkkconfigsymbols.py: Remove skipping of help lines in parse_kconfig_file	2021-09-19 10:13:03 +09:00
checkpatch.pl	checkpatch: improve GIT_COMMIT_ID test	2021-09-08 11:50:27 -07:00
checkstack.pl	…
checksyscalls.sh	don't make the syscall checking produce errors from warnings	2021-09-06 09:15:09 -07:00
checkversion.pl	scripts: checkversion: modernize linux/version.h search strings	2021-08-05 20:55:39 +09:00
cleanfile	…
cleanpatch	…
coccicheck	scripts: coccicheck: fix troubles on non-English builds	2021-05-18 11:09:59 +02:00
config	kconfig: config script: add a little user help	2021-01-04 10:38:11 +09:00
const_structs.checkpatch	…
decode_stacktrace.sh	scripts/decode_stacktrace.sh: indicate 'auto' can be used for base path	2021-07-08 11:48:22 -07:00
decodecode	…
depmod.sh	depmod: handle the case of /sbin/depmod without /sbin in PATH	2021-01-01 12:26:39 -08:00
dev-needs.sh	…
diffconfig	scripts: switch explicitly to Python 3	2021-01-22 06:34:44 +09:00
documentation-file-ref-check	documentation-file-ref-check: Make git check work for multiple working directories	2021-06-04 11:20:52 -06:00
export_report.pl	…
extract-cert.c	…
extract-ikconfig	…
extract-module-sig.pl	…
extract-sys-certs.pl	…
extract-vmlinux	…
extract_xc3028.pl	…
faddr2line	…
file-size.sh	…
find-unused-docs.sh	…
gcc-goto.sh	…
gcc-ld	…
gcc-x86_32-has-stack-protector.sh	x86/stackprotector/32: Make the canary into a regular percpu variable	2021-03-08 13:19:05 +01:00
gcc-x86_64-has-stack-protector.sh	…
gen_autoksyms.sh	kbuild: Fix TRIM_UNUSED_KSYMS with LTO_CLANG	2021-09-03 08:12:39 +09:00
gen_ksymdeps.sh	kbuild: redo fake deps at include/ksym/*.h	2021-09-03 08:17:21 +09:00
generate_initcall_order.pl	init: lto: ensure initcall ordering	2021-01-14 08:21:09 -08:00
get_abi.pl	scripts: get_abi: ignore code blocks for cross-references	2021-03-31 13:53:16 -06:00
get_dvb_firmware	…
get_feat.pl	scripts: get_feat.pl: reduce table width for all features output	2020-12-04 14:34:27 -07:00
get_maintainer.pl	…
gfp-translate	…
headerdep.pl	…
headers_check.pl	…
headers_install.sh	…
insert-sys-cert.c	…
jobserver-exec	scripts/jobserver-exec: Fix a typo ("envirnoment")	2021-05-17 12:10:03 +09:00
kallsyms.c	kallsyms: fix nonconverging kallsyms table with lld	2021-02-05 17:53:28 +09:00
kernel-doc	scripts/kernel-doc: Override -Werror from KCFLAGS with KDOC_WERROR	2021-08-12 08:58:13 -06:00
ld-version.sh	kbuild: collect minimum tool versions into scripts/min-tool-version.sh	2021-04-25 05:14:26 +09:00
leaking_addresses.pl	…
link-vmlinux.sh	kbuild: merge vmlinux_link() between ARCH=um and other architectures	2021-09-03 08:17:21 +09:00
makelst	…
markup_oops.pl	…
min-tool-version.sh	Documentation: raise minimum supported version of GCC to 5.1	2021-09-13 10:18:28 -07:00
mkcompile_h	kbuild: mkcompile_h: consider timestamp if KBUILD_BUILD_TIMESTAMP is set	2021-06-17 10:01:12 +09:00
mksysmap	…
mkuboot.sh	…
module.lds.S	module: combine constructors in module linker script	2021-07-19 14:51:40 +02:00
modules-check.sh	kbuild: check module name conflict for external modules as well	2021-04-25 05:22:42 +09:00
nsdeps	kbuild: replace LANG=C with LC_ALL=C	2021-05-02 00:43:35 +09:00
objdiff	…
parse-maintainers.pl	…
patch-kernel	…
profile2linkerlist.pl	…
prune-kernel	…
recordmcount.c	ftrace: Have recordmcount use w8 to read relp->r_info in arm64_is_fake_mcount	2021-03-02 17:27:18 -05:00
recordmcount.h	recordmcount: Correct st_shndx handling	2021-06-18 09:09:17 -04:00
recordmcount.pl	scripts/recordmcount.pl: Remove check_objcopy() and $can_use_local	2021-08-04 17:49:26 -04:00
remove-stale-files	kbuild: add a script to remove stale generated files	2021-05-02 00:43:35 +09:00
setlocalversion	scripts/setlocalversion: fix a bug when LOCALVERSION is empty	2021-07-18 23:48:14 +09:00
show_delta	tweewide: Fix most Shebang lines	2020-12-08 23:30:04 +09:00
sign-file.c	…
sorttable.c	arm64: extable: add `type` and `data` fields	2021-10-21 10:45:22 +01:00
sorttable.h	…
spdxcheck-test.sh	scripts/spdxcheck-test.sh: Drop python2	2021-07-21 15:59:32 +02:00
spdxcheck.py	scripts/spdxcheck.py: Strictly read license files in utf-8	2021-07-12 09:56:50 -06:00
spelling.txt	scripts/spelling.txt: add more spellings to spelling.txt	2021-06-29 10:53:45 -07:00
sphinx-pre-install	scripts: sphinx-pre-install: fix the need of virtenv packages	2021-06-01 16:29:30 -06:00
split-man.pl	tweewide: Fix most Shebang lines	2020-12-08 23:30:04 +09:00
stackdelta	…
stackusage	…
subarch.include	parisc: Fix compile failure when building 64-bit kernel natively	2021-09-01 21:52:02 +02:00
syscallhdr.sh	scripts: check duplicated syscall number in syscall table	2021-07-09 04:00:39 +09:00
syscallnr.sh	scripts: make some scripts executable	2021-08-10 09:13:25 +09:00
syscalltbl.sh	scripts: check duplicated syscall number in syscall table	2021-07-09 04:00:39 +09:00
tags.sh	kbuild: replace LANG=C with LC_ALL=C	2021-05-02 00:43:35 +09:00
tools-support-relr.sh	Makefile: fix GDB warning with CONFIG_RELR	2021-06-08 13:09:34 +01:00
unifdef.c	…
ver_linux	Removed the oprofiled version option	2021-05-03 17:23:06 -06:00
xen-hypercalls.sh	scripts: make some scripts executable	2021-08-10 09:13:25 +09:00
xz_wrap.sh	…