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

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Message-ID: <aRdWF8ck4iq1hc0B@kernel.org>
Date: Fri, 14 Nov 2025 18:17:27 +0200
From: Mike Rapoport <rppt@...nel.org>
To: Pasha Tatashin <pasha.tatashin@...een.com>
Cc: akpm@...ux-foundation.org, bhe@...hat.com, jasonmiu@...gle.com,
	arnd@...db.de, coxu@...hat.com, dave@...ilevsky.ca,
	ebiggers@...gle.com, graf@...zon.com, kees@...nel.org,
	linux-kernel@...r.kernel.org, kexec@...ts.infradead.org,
	linux-mm@...ck.org
Subject: Re: [PATCH v1 00/13] kho: simplify state machine and enable dynamic
 updates

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@...nel.org>

with small nits in patches 9 and 13 in replies to them.

> 
>  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.