From: Song Liu <song@kernel.org>
To: live-patching@vger.kernel.org, linux-kselftest@vger.kernel.org
Cc: jpoimboe@kernel.org, jikos@kernel.org, mbenes@suse.cz,
pmladek@suse.com, joe.lawrence@redhat.com, shuah@kernel.org,
linux-kernel@vger.kernel.org, Song Liu <song@kernel.org>
Subject: [PATCH 00/11] klp-build: Fix dependent patches, add selftests
Date: Fri, 16 Oct 2026 17:24:30 -0700 [thread overview]
Message-ID: <20261017002441.716615-1-song@kernel.org> (raw)
klp-build fails when a later patch in the series depends on an earlier
one, because it fixes each patch against the original source on its
own. Patch 1 fixes this by combining the patches into a single patch
before adding the #line directives.
So far, testing this step has needed a full kernel build. Patch 2 adds
a --patch-only option, which validates and fixes the patches, prints
the result, and exits without building.
Patches 3-11 use it to add a kselftest target, livepatch/test_klp_build.
Each test builds a small source tree, runs "klp-build --patch-only" on
some patches, and checks the patch it prints. The tests compile
nothing, need no root, and take about a second. To run them:
make -C tools/testing/selftests/livepatch/test_klp_build tests
Song Liu (11):
klp-build: Fix dependent patches in a series
klp-build: Add --patch-only option
selftests/livepatch: Add tests for klp-build's patch handling
selftests/livepatch: Test klp-build with dependent patches
selftests/livepatch: Test klp-build with patches to different
functions
selftests/livepatch: Test klp-build with patches which cancel out
selftests/livepatch: Test klp-build with created and deleted files
selftests/livepatch: Test where klp-build adds #line directives
selftests/livepatch: Test klp-build's rejection of unsupported files
selftests/livepatch: Test klp-build with patches which don't apply
selftests/livepatch: Test klp-build with patches which need offset or
fuzz
scripts/livepatch/klp-build | 121 ++++++++----
tools/testing/selftests/Makefile | 1 +
tools/testing/selftests/livepatch/README | 16 ++
.../livepatch/test_klp_build/Makefile | 27 +++
.../livepatch/test_klp_build/functions.sh | 150 +++++++++++++++
.../livepatch/test_klp_build/run-tests.sh | 68 +++++++
.../livepatch/test_klp_build/test-basic.sh | 57 ++++++
.../test_klp_build/test-cancelling-patches.sh | 102 ++++++++++
.../test_klp_build/test-dependent-patches.sh | 72 +++++++
.../test-independent-patches.sh | 124 +++++++++++++
.../test_klp_build/test-line-directives.sh | 175 ++++++++++++++++++
.../test-new-and-deleted-files.sh | 94 ++++++++++
.../test_klp_build/test-offset-and-fuzz.sh | 120 ++++++++++++
.../test_klp_build/test-patch-not-applying.sh | 73 ++++++++
.../test_klp_build/test-unsupported-files.sh | 30 +++
15 files changed, 1189 insertions(+), 41 deletions(-)
create mode 100644 tools/testing/selftests/livepatch/test_klp_build/Makefile
create mode 100644 tools/testing/selftests/livepatch/test_klp_build/functions.sh
create mode 100755 tools/testing/selftests/livepatch/test_klp_build/run-tests.sh
create mode 100755 tools/testing/selftests/livepatch/test_klp_build/test-basic.sh
create mode 100755 tools/testing/selftests/livepatch/test_klp_build/test-cancelling-patches.sh
create mode 100755 tools/testing/selftests/livepatch/test_klp_build/test-dependent-patches.sh
create mode 100755 tools/testing/selftests/livepatch/test_klp_build/test-independent-patches.sh
create mode 100755 tools/testing/selftests/livepatch/test_klp_build/test-line-directives.sh
create mode 100755 tools/testing/selftests/livepatch/test_klp_build/test-new-and-deleted-files.sh
create mode 100755 tools/testing/selftests/livepatch/test_klp_build/test-offset-and-fuzz.sh
create mode 100755 tools/testing/selftests/livepatch/test_klp_build/test-patch-not-applying.sh
create mode 100755 tools/testing/selftests/livepatch/test_klp_build/test-unsupported-files.sh
--
2.53.0-Meta
next reply other threads:[~2026-10-17 0:24 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-17 0:24 Song Liu [this message]
2026-10-17 0:24 ` [PATCH 01/11] klp-build: Fix dependent patches in a series Song Liu
2026-10-17 0:24 ` [PATCH 02/11] klp-build: Add --patch-only option Song Liu
2026-10-17 0:24 ` [PATCH 03/11] selftests/livepatch: Add tests for klp-build's patch handling Song Liu
2026-10-17 0:24 ` [PATCH 04/11] selftests/livepatch: Test klp-build with dependent patches Song Liu
2026-10-17 0:24 ` [PATCH 05/11] selftests/livepatch: Test klp-build with patches to different functions Song Liu
2026-10-17 0:24 ` [PATCH 06/11] selftests/livepatch: Test klp-build with patches which cancel out Song Liu
2026-10-17 0:24 ` [PATCH 07/11] selftests/livepatch: Test klp-build with created and deleted files Song Liu
2026-10-17 0:24 ` [PATCH 08/11] selftests/livepatch: Test where klp-build adds #line directives Song Liu
2026-10-17 0:24 ` [PATCH 09/11] selftests/livepatch: Test klp-build's rejection of unsupported files Song Liu
2026-10-17 0:24 ` [PATCH 10/11] selftests/livepatch: Test klp-build with patches which don't apply Song Liu
2026-10-17 0:24 ` [PATCH 11/11] selftests/livepatch: Test klp-build with patches which need offset or fuzz Song Liu
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=20261017002441.716615-1-song@kernel.org \
--to=song@kernel.org \
--cc=jikos@kernel.org \
--cc=joe.lawrence@redhat.com \
--cc=jpoimboe@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-kselftest@vger.kernel.org \
--cc=live-patching@vger.kernel.org \
--cc=mbenes@suse.cz \
--cc=pmladek@suse.com \
--cc=shuah@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