From 6bd280c7feebd922144fd74869ee222c22ddd042 Mon Sep 17 00:00:00 2001 From: "Pratyush Yadav (Google)" Date: Tue, 19 May 2026 14:57:06 +0200 Subject: liveupdate: document liveupdate=on While the liveupdate= parameter is documented in kernel-parameters.txt, it is not listed in LUO's user facing documentation. This can make it hard for users to figure out how to enable the subsystem, since enabling just the config isn't enough. Note the need for the kernel parameter in LUO core documentation, which gets exported to Documentation/core-api/liveupdate.rst. Suggested-by: Luca Boccassi Signed-off-by: Pratyush Yadav (Google) Acked-by: Luca Boccassi Link: https://patch.msgid.link/20260519125714.2435640-1-pratyush@kernel.org Signed-off-by: Pasha Tatashin Signed-off-by: Mike Rapoport (Microsoft) --- kernel/liveupdate/luo_core.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'kernel') diff --git a/kernel/liveupdate/luo_core.c b/kernel/liveupdate/luo_core.c index 803f51c84275..5d5827ced73c 100644 --- a/kernel/liveupdate/luo_core.c +++ b/kernel/liveupdate/luo_core.c @@ -36,6 +36,10 @@ * * LUO uses Kexec Handover to transfer memory state from the current kernel to * the next kernel. For more details see Documentation/core-api/kho/index.rst. + * + * .. note:: + * To enable LUO, boot the kernel with the ``liveupdate=on`` command line + * parameter. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -- cgit v1.2.3