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b=sSk3ziS26djj8bwpKG0AaOZ7yAiinOp1WrjYXqDKQNwujipdA2xP8J3TbIRUoKQtZ ju4hZeEPLmNnjWHBTXlef2+vWJlp+KLFvRyHJ464pcL38vZiG8I6TZeRp40CTzEnHX /gzRcoNO8WuhPh7s/zOfIkFL7s94Rfjz4dWSAHDPAtooY5SXe6zkrTG1Lfyeh9V5N3 rN62j3cRqIgehyd4cF/XtjD3zhwMpN+/zjSOQ4v8Biadu0/h9ZYSB9TOJDEs6ByaF6 SIx7+NZmlR43vPW70gyVmzt0H7DA5BSZkrLfEP5iVoHE0bTucLUX2dF6aVVx7J50n4 2LtiBvWDj4r4g== From: Pratyush Yadav To: Pasha Tatashin , Mike Rapoport , Pratyush Yadav , Shuah Khan , Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 0/6] selftests/liveupdate: add memfd tests Date: Mon, 9 Mar 2026 11:54:33 +0000 Message-ID: <20260309115441.266805-1-pratyush@kernel.org> X-Mailer: git-send-email 2.53.0.473.g4a7958ca14-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Stat-Signature: 4edgxbmwc36bsp8f5hqntrij9pdg9y9r X-Rspamd-Queue-Id: 3013FA0004 X-Rspamd-Server: rspam03 X-HE-Tag: 1773057292-387264 X-HE-Meta: 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 BOdyXeQi NPQatwh6HJI9hyOPXFwd2VfzeG9bo5rHZyDUcxjubJYVpQk6fcNKutKaBthAX03qqhEikWxcxw/1HRP/eyVf6v3DyjYGbxfZYnwdde6ehTrZprKQUykqUahQ+vEZuSttPi7bcT8bGCGxtso9tYILvkqBKtlW9VsVxmP0HlozZPD452gGUvUJfrCZ/+58AQ8h8YXiEaF8NAkBlBUKWVFVSxM9j/ZLmgq8toR2GKuNPcTKEtjxOvMt5XHhYTohurFexiu5p0uZhDNy6UHOlBzXvsO1h1QaWjk06nYlv Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: "Pratyush Yadav (Google)" Hi, This series adds some tests for memfd preservation across a live update. Currently memfd is only tested indirectly via luo_kexec_simple or luo_multi_session. Add a dedicated test suite for it. Patches 1 and 2 are preparatory, adding base framework and helpers, and the other patches each add a test. Some of the code is taken from the libluo patches [0] I sent a while ago. [0] https://lore.kernel.org/linux-mm/20250723144649.1696299-33-pasha.tatashin@soleen.com/ Regards, Pratyush Yadav Pratyush Yadav (Google) (6): selftests/liveupdate: add framework for memfd tests selftests/liveupdate: add helper functions for memfd tests selftests/liveupdate: add test for memfd content preservation selftests/liveupdate: add test for zero-size memfd preservation selftests/liveupdate: add test for operations on a preserved memfd selftests/liveupdate: add fallocate test for memfd tools/testing/selftests/liveupdate/Makefile | 2 + .../testing/selftests/liveupdate/luo_memfd.c | 306 ++++++++++++++++++ .../selftests/liveupdate/luo_test_utils.c | 175 +++++++++- .../selftests/liveupdate/luo_test_utils.h | 9 + 4 files changed, 491 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/liveupdate/luo_memfd.c base-commit: 6f04517c06a898228eda00cbd8573d9e84003108 -- 2.53.0.473.g4a7958ca14-goog