+ liveupdate-kho-enable-kho-by-default.patch added to mm-nonmm-unstable branch

+ liveupdate-kho-enable-kho-by-default.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: liveupdate: kho: enable KHO by default
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     liveupdate-kho-enable-kho-by-default.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/liveupdate-kho-enable-kho-by-default.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Pasha Tatashin <pasha.tatashin@soleen.com>
Subject: liveupdate: kho: enable KHO by default
Date: Mon, 10 Nov 2025 13:07:15 -0500

Upcoming LUO requires KHO for its operations, the requirement to place
both KHO=on and liveupdate=on becomes redundant.  Set KHO to be enabled by
default.

Link: https://lkml.kernel.org/r/20251110180715.602807-1-pasha.tatashin@soleen.com
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Alexander Graf <graf@amazon.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Pratyush Yadav <pratyush@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/liveupdate/kexec_handover.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/liveupdate/kexec_handover.c~liveupdate-kho-enable-kho-by-default
+++ a/kernel/liveupdate/kexec_handover.c
@@ -51,7 +51,7 @@ union kho_page_info {
 
 static_assert(sizeof(union kho_page_info) == sizeof(((struct page *)0)->private));
 
-static bool kho_enable __ro_after_init;
+static bool kho_enable __ro_after_init = true;
 
 bool kho_is_enabled(void)
 {
_

Patches currently in -mm which might be from pasha.tatashin@soleen.com are

lib-test_kho-check-if-kho-is-enabled.patch
kho-make-debugfs-interface-optional.patch
kho-add-interfaces-to-unpreserve-folios-page-ranges-and-vmalloc.patch
memblock-unpreserve-memory-in-case-of-error.patch
test_kho-unpreserve-memory-in-case-of-error.patch
kho-dont-unpreserve-memory-during-abort.patch
liveupdate-kho-move-to-kernel-liveupdate.patch
liveupdate-kho-move-to-kernel-liveupdate-fix.patch
maintainers-update-kho-maintainers.patch
liveupdate-luo_core-luo_ioctl-live-update-orchestrator.patch
liveupdate-luo_core-integrate-with-kho.patch
reboot-call-liveupdate_reboot-before-kexec.patch
liveupdate-kconfig-make-debugfs-optional.patch
liveupdate-kho-when-live-update-add-kho-image-during-kexec-load.patch
liveupdate-luo_session-add-sessions-support.patch
liveupdate-luo_ioctl-add-user-interface.patch
liveupdate-luo_file-implement-file-systems-callbacks.patch
liveupdate-luo_session-add-ioctls-for-file-preservation-and-state-management.patch
liveupdate-luo_flb-introduce-file-lifecycle-bound-global-state.patch
docs-add-luo-documentation.patch
maintainers-add-liveupdate-entry.patch
selftests-liveupdate-add-userspace-api-selftests.patch
selftests-liveupdate-add-kexec-based-selftest-for-session-lifecycle.patch
selftests-liveupdate-add-kexec-test-for-multiple-and-empty-sessions.patch
tests-liveupdate-add-in-kernel-liveupdate-test.patch
liveupdate-kho-enable-kho-by-default.patch