From: Josh Poimboeuf <jpoimboe@kernel.org>
To: x86@kernel.org
Cc: linux-kernel@vger.kernel.org, live-patching@vger.kernel.org,
Peter Zijlstra <peterz@infradead.org>,
Joe Lawrence <joe.lawrence@redhat.com>,
Song Liu <song@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
linux-arm-kernel@lists.infradead.org,
Mark Rutland <mark.rutland@arm.com>,
Nathan Chancellor <nathan@kernel.org>,
Nicolas Schier <nsc@kernel.org>,
Herbert Xu <herbert@gondor.apana.org.au>
Subject: [PATCH v2 00/12] objtool/arm64: Port klp-build to arm64
Date: Tue, 17 Mar 2026 15:51:00 -0700 [thread overview]
Message-ID: <cover.1773787568.git.jpoimboe@kernel.org> (raw)
v2:
- patches 1-2 were merged, rebase on tip/master
- improve commit message for "objtool: Extricate checksum calculation from validate_branch()"
- add review tags
v1: https://lore.kernel.org/cover.1772681234.git.jpoimboe@kernel.org
Port objtool and the klp-build tooling (for building livepatch modules)
to arm64.
Note this doesn't bring all the objtool bells and whistles to arm64, nor
any of the CFG reverse engineering. This only adds the bare minimum
needed for 'objtool --checksum'.
And note that objtool still doesn't get enabled at all for normal arm64
kernel builds, so this doesn't affect any users other than those running
klp-build directly.
Josh Poimboeuf (12):
arm64: Annotate intra-function calls
arm64: head: Move boot header to .head.data
arm64: Fix EFI linking with -fdata-sections
crypto: arm64: Move data to .rodata
objtool: Extricate checksum calculation from validate_branch()
objtool: Allow setting --mnop without --mcount
kbuild: Only run objtool if there is at least one command
objtool: Ignore jumps to the end of the function for non-CFG arches
objtool: Allow empty alternatives
objtool: Reuse consecutive string references
objtool: Introduce objtool for arm64
klp-build: Support cross-compilation
arch/arm64/Kconfig | 2 +
arch/arm64/kernel/entry.S | 2 +
arch/arm64/kernel/head.S | 2 +-
arch/arm64/kernel/proton-pack.c | 12 +-
arch/arm64/kernel/vmlinux.lds.S | 2 +-
arch/x86/boot/startup/Makefile | 2 +-
include/asm-generic/vmlinux.lds.h | 2 +-
include/linux/init.h | 1 +
lib/crypto/arm64/sha2-armv8.pl | 11 +-
scripts/Makefile.build | 4 +-
scripts/Makefile.lib | 46 +++----
scripts/Makefile.vmlinux_o | 15 +--
scripts/livepatch/klp-build | 11 +-
tools/objtool/Makefile | 4 +
tools/objtool/arch/arm64/Build | 2 +
tools/objtool/arch/arm64/decode.c | 116 ++++++++++++++++++
.../arch/arm64/include/arch/cfi_regs.h | 11 ++
tools/objtool/arch/arm64/include/arch/elf.h | 13 ++
.../objtool/arch/arm64/include/arch/special.h | 21 ++++
tools/objtool/arch/arm64/special.c | 21 ++++
tools/objtool/builtin-check.c | 5 -
tools/objtool/check.c | 83 +++++++++----
tools/objtool/elf.c | 9 +-
tools/objtool/include/objtool/checksum.h | 6 +-
24 files changed, 321 insertions(+), 82 deletions(-)
create mode 100644 tools/objtool/arch/arm64/Build
create mode 100644 tools/objtool/arch/arm64/decode.c
create mode 100644 tools/objtool/arch/arm64/include/arch/cfi_regs.h
create mode 100644 tools/objtool/arch/arm64/include/arch/elf.h
create mode 100644 tools/objtool/arch/arm64/include/arch/special.h
create mode 100644 tools/objtool/arch/arm64/special.c
--
2.53.0
next reply other threads:[~2026-03-17 22:51 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-17 22:51 Josh Poimboeuf [this message]
2026-03-17 22:51 ` [PATCH v2 01/12] arm64: Annotate intra-function calls Josh Poimboeuf
2026-03-17 22:51 ` [PATCH v2 02/12] arm64: head: Move boot header to .head.data Josh Poimboeuf
2026-03-17 22:51 ` [PATCH v2 03/12] arm64: Fix EFI linking with -fdata-sections Josh Poimboeuf
2026-03-17 22:51 ` [PATCH v2 04/12] crypto: arm64: Move data to .rodata Josh Poimboeuf
2026-03-17 22:51 ` [PATCH v2 05/12] objtool: Extricate checksum calculation from validate_branch() Josh Poimboeuf
2026-03-17 22:51 ` [PATCH v2 06/12] objtool: Allow setting --mnop without --mcount Josh Poimboeuf
2026-03-17 22:51 ` [PATCH v2 07/12] kbuild: Only run objtool if there is at least one command Josh Poimboeuf
2026-03-18 19:54 ` Nicolas Schier
2026-03-19 0:49 ` Josh Poimboeuf
2026-03-17 22:51 ` [PATCH v2 08/12] objtool: Ignore jumps to the end of the function for non-CFG arches Josh Poimboeuf
2026-03-17 22:51 ` [PATCH v2 09/12] objtool: Allow empty alternatives Josh Poimboeuf
2026-03-17 22:51 ` [PATCH v2 10/12] objtool: Reuse consecutive string references Josh Poimboeuf
2026-03-17 22:51 ` [PATCH v2 11/12] objtool: Introduce objtool for arm64 Josh Poimboeuf
2026-03-17 22:51 ` [PATCH v2 12/12] klp-build: Support cross-compilation Josh Poimboeuf
2026-03-19 4:13 ` [PATCH v2 00/12] objtool/arm64: Port klp-build to arm64 Josh Poimboeuf
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=cover.1773787568.git.jpoimboe@kernel.org \
--to=jpoimboe@kernel.org \
--cc=catalin.marinas@arm.com \
--cc=herbert@gondor.apana.org.au \
--cc=joe.lawrence@redhat.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=live-patching@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=nathan@kernel.org \
--cc=nsc@kernel.org \
--cc=peterz@infradead.org \
--cc=song@kernel.org \
--cc=will@kernel.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox