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AFNElJ/gh3zSsoJsYg9gmzvQt8Fq4s4qwYJsQ0T0x9Kb6qEUnPOTMfSTWiT2zE6tZaAjym1OM179ZIzxBQ==@kvack.org X-Gm-Message-State: AOJu0YwgnECCY1giioMjcqEjHmYk4jGrdgRE2VzRrfNrQCspxls07bxR bT9kddQLWs/bJ4XwNPoKDNF9C+1VFNiIhWxatfSMVTFR+MJaPajmx+Gu2bZWV34YzC+uZp2Gi1x j1AHu+4aFkVQnk9QmIg== X-Received: from edvl5.prod.google.com ([2002:a05:6402:285:b0:697:de18:6de9]) (user=tarunsahu job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6402:2803:b0:691:a8bd:981d with SMTP id 4fb4d7f45d1cf-697dbad110dmr1143090a12.4.1782211923249; Tue, 23 Jun 2026 03:52:03 -0700 (PDT) Date: Tue, 23 Jun 2026 10:51:58 +0000 Mime-Version: 1.0 X-Mailer: git-send-email 2.55.0.rc0.786.g65d90a0328-goog Message-ID: <20260623105201.3724592-1-tarunsahu@google.com> Subject: [PATCH v5 0/2] luo: convert serialized ptr to KHOSER_PTR From: Tarun Sahu To: Mike Rapoport , Pasha Tatashin , Pratyush Yadav , Andrew Morton , Alexander Graf Cc: kexec@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Tarun Sahu Content-Type: text/plain; charset="UTF-8" X-Rspam-User: X-Stat-Signature: 9c38f8871mnzdgicka544s7qtp91ppb4 X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 0FF7040004 X-HE-Tag: 1782211924-60312 X-HE-Meta: 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 JbNAiwp+ 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Convert raw serialized_data to KHO serializeable pointer (KHOSER_PTR). This series also takes care of resolving the bug with memfd of using phys_to_virt before checking the args->serialized_data value. v5 <- v4 separate the memfd_luo fix in a new commit to allow backport if needed. v4 <- RESEND V3 use only KHOSER_COPY_PTR and have compiler time check for type excluding void * types. Remove TYPE(UN)SAFE variants. RESEND V3: Sent incorrect thread format earlier, this one is with correct one. v3 <- v2 Rebased on top of liveupdate/next v2 <- v1 Use KHOSER_PTR across liveupdate files instead of only memfd_luo Tarun Sahu (3): mm/memfd_luo: validate serialized_data before conversion kho: add KHOSER_COPY_PTR to allow phys copy of serialized ptr luo: Update serialized data to use KHOSER_PTR include/linux/kho/abi/kexec_handover.h | 11 +++++++++++ include/linux/kho/abi/luo.h | 5 +++-- include/linux/liveupdate.h | 4 ++-- kernel/liveupdate/luo_file.c | 24 ++++++++++++------------ mm/memfd_luo.c | 22 +++++++++++++--------- 5 files changed, 41 insertions(+), 25 deletions(-) base-commit: e98a9c61721c14bcd29f11f4802e52e908701f7a -- 2.55.0.rc0.786.g65d90a0328-goog