[PATCH v1 08/13] kho: Remove abort functionality and support state refresh

[Pratyush Yadav]

On Fri, Nov 14 2025, Pasha Tatashin wrote:

> On Fri, Nov 14, 2025 at 12:18 PM Pratyush Yadav <pratyush at kernel.org> wrote:
>>
>> On Fri, Nov 14 2025, Pasha Tatashin wrote:
>>
>> > Previously, KHO required a dedicated kho_abort() function to clean up
>> > state before kho_finalize() could be called again. This was necessary
>> > to handle complex unwind paths when using notifiers.
>> >
>> > With the shift to direct memory preservation, the explicit abort step
>> > is no longer strictly necessary.
>> >
>> > Remove kho_abort() and refactor kho_finalize() to handle re-entry.
>> > If kho_finalize() is called while KHO is already finalized, it will
>> > now automatically clean up the previous memory map and state before
>> > generating a new one. This allows the KHO state to be updated/refreshed
>> > simply by triggering finalize again.
>> >
>> > Update debugfs to return -EINVAL if userspace attempts to write 0 to
>> > the finalize attribute, as explicit abort is no longer supported.
>>
>> Documentation/core-api/kho/concepts.rst touches on the concept of
>> finalization. I suppose that should be updated as well.
>
> I looked at it, and it is vague, we are soon to remove finalize with
> stateless kho from Jason Miu, so in that series that section can be
> removed or replaced.

Okay, fair enough.

[...]

-- 
Regards,
Pratyush Yadav