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[34.85.221.182]) by smtp.gmail.com with ESMTPSA id 00721157ae682-7882218774esm28462007b3.57.2025.11.15.15.34.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 15 Nov 2025 15:34:21 -0800 (PST) From: Pasha Tatashin To: pratyush@kernel.org, jasonmiu@google.com, graf@amazon.com, pasha.tatashin@soleen.com, rppt@kernel.org, dmatlack@google.com, rientjes@google.com, corbet@lwn.net, rdunlap@infradead.org, ilpo.jarvinen@linux.intel.com, kanie@linux.alibaba.com, ojeda@kernel.org, aliceryhl@google.com, masahiroy@kernel.org, akpm@linux-foundation.org, tj@kernel.org, yoann.congal@smile.fr, mmaurer@google.com, roman.gushchin@linux.dev, chenridong@huawei.com, axboe@kernel.dk, mark.rutland@arm.com, jannh@google.com, vincent.guittot@linaro.org, hannes@cmpxchg.org, dan.j.williams@intel.com, david@redhat.com, joel.granados@kernel.org, rostedt@goodmis.org, anna.schumaker@oracle.com, song@kernel.org, linux@weissschuh.net, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, gregkh@linuxfoundation.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, rafael@kernel.org, dakr@kernel.org, bartosz.golaszewski@linaro.org, cw00.choi@samsung.com, myungjoo.ham@samsung.com, yesanishhere@gmail.com, Jonathan.Cameron@huawei.com, quic_zijuhu@quicinc.com, aleksander.lobakin@intel.com, ira.weiny@intel.com, andriy.shevchenko@linux.intel.com, leon@kernel.org, lukas@wunner.de, bhelgaas@google.com, wagi@kernel.org, djeffery@redhat.com, stuart.w.hayes@gmail.com, ptyadav@amazon.de, lennart@poettering.net, brauner@kernel.org, linux-api@vger.kernel.org, linux-fsdevel@vger.kernel.org, saeedm@nvidia.com, ajayachandra@nvidia.com, jgg@nvidia.com, parav@nvidia.com, leonro@nvidia.com, witu@nvidia.com, hughd@google.com, skhawaja@google.com, chrisl@kernel.org Subject: [PATCH v6 03/20] kexec: call liveupdate_reboot() before kexec Date: Sat, 15 Nov 2025 18:33:49 -0500 Message-ID: <20251115233409.768044-4-pasha.tatashin@soleen.com> X-Mailer: git-send-email 2.52.0.rc1.455.g30608eb744-goog In-Reply-To: <20251115233409.768044-1-pasha.tatashin@soleen.com> References: <20251115233409.768044-1-pasha.tatashin@soleen.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: A8D254000D X-Stat-Signature: mfe7r1zzp39p1aqo8nrxxig9an1xfcf5 X-Rspam-User: X-HE-Tag: 1763249663-374034 X-HE-Meta: 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 yhk2juzy RldP/zYSrBcw4qTagTG7+EAGVuXz9dcGBeCHt0fcjhUTPH45vg7C5GQA0jRfv3i8YyEOtgl6sbSn4JKwgY5gt2+QtH5NUCXGDrWQsbjZ5Oz2gokFk5wdKH91ArB+NbVG74YCCMuBYJuMgSipDQ1HLf5A/Rl+JLSNHYjzV3ytJb1eRxXk= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Modify the kernel_kexec() to call liveupdate_reboot(). This ensures that the Live Update Orchestrator is notified just before the kernel executes the kexec jump. The liveupdate_reboot() function triggers the final freeze event, allowing participating FDs perform last-minute check or state saving within the blackout window. If liveupdate_reboot() returns an error (indicating a failure during LUO finalization), the kexec operation is aborted to prevent proceeding with an inconsistent state. An error is returned to user. Signed-off-by: Pasha Tatashin --- kernel/kexec_core.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c index a8890dd03a1d..3122235c225b 100644 --- a/kernel/kexec_core.c +++ b/kernel/kexec_core.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -1145,6 +1146,10 @@ int kernel_kexec(void) goto Unlock; } + error = liveupdate_reboot(); + if (error) + goto Unlock; + #ifdef CONFIG_KEXEC_JUMP if (kexec_image->preserve_context) { /* -- 2.52.0.rc1.455.g30608eb744-goog