[PATCH v1 00/13] kho: simplify state machine and enable dynamic updates

[Pasha Tatashin]

On Fri, Nov 14, 2025 at 11:17 AM Mike Rapoport <rppt at kernel.org> wrote:
>
> On Fri, Nov 14, 2025 at 10:53:45AM -0500, Pasha Tatashin wrote:
> >
> > This patch series refactors the Kexec Handover subsystem to transition
> > from a rigid, state-locked model to a dynamic, re-entrant architecture.
> > It also introduces usability improvements.
> >
> > Pasha Tatashin (13):
> >   kho: Fix misleading log message in kho_populate()
> >   kho: Convert __kho_abort() to return void
> >   kho: Preserve FDT folio only once during initialization
> >   kho: Verify deserialization status and fix FDT alignment access
> >   kho: Always expose output FDT in debugfs
> >   kho: Simplify serialization and remove __kho_abort
> >   kho: Remove global preserved_mem_map and store state in FDT
> >   kho: Remove abort functionality and support state refresh
> >   kho: Update FDT dynamically for subtree addition/removal
> >   kho: Allow kexec load before KHO finalization
> >   kho: Allow memory preservation state updates after finalization
> >   kho: Add Kconfig option to enable KHO by default
> >   kho: Introduce high-level memory allocation API
>
> For the series:
>
> Reviewed-by: Mike Rapoport (Microsoft) <rppt at kernel.org>
>
> with small nits in patches 9 and 13 in replies to them.

Thank you Mike! I will update the series, and post v2 shortly.

Pasha

>
> >
> >  include/linux/kexec_handover.h              |  22 +-
> >  kernel/liveupdate/Kconfig                   |  14 +
> >  kernel/liveupdate/kexec_handover.c          | 338 ++++++++++++--------
> >  kernel/liveupdate/kexec_handover_debugfs.c  |   2 +-
> >  kernel/liveupdate/kexec_handover_internal.h |   1 -
> >  5 files changed, 232 insertions(+), 145 deletions(-)
> >
> > --
> > 2.52.0.rc1.455.g30608eb744-goog
> >
>
> --
> Sincerely yours,
> Mike.