Re: [PATCH v2 0/4] livepatch: Add garbage collection for shadow variables

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On Mon 2023-01-23 14:33:31, Marcos Paulo de Souza wrote:
> On Tue, Nov 01, 2022 at 11:43:50AM +0100, Petr Mladek wrote:
> > On Wed 2022-10-26 16:41:18, Marcos Paulo de Souza wrote:
> > > Hello,
> > > 
> > > This is the v2 of the livepatch shadow GC patches. The changes are minor since
> > > nobody asked for for big code changes.
> > > 
> > > Changes from v1:
> > > * Reworked commit messages (Petr)
> > > * Added my SoB which was missing in some patches, or the ordering was wrong. (Josh)
> > > * Change __klp_shadow_get_or_use to __klp_shadow_get_or_add_locked and add a comment (Petr)
> > > * Add lockdep_assert_held on __klp_shadow_get_or_add_locked (Petr)
> > >   about it's meaning (Petr)
> > > * CCing LKML (Josh)
> > > 
> > > Some observations:
> > > * Petr has reviewed some of the patches that we created. I kept the Reviewed-by
> > >   tags since he wrote the patches some time ago and now he reviewed them again
> > >   on the ML.
> > > * There were questions about possible problems about using klp_shadow_types
> > >   instead of using ids, but Petr already explained that internally it still uses
> > >   the id to find the correct livepatch.
> > > * Regarding the possibility of multiple patches use the same ID, the problem
> > >   already existed before. Petr suggested using a "stringified" version using
> > >   name and id, but nobody has commented yet. I can implement such feature in a
> > >   v3 if necessary.
> > > 
> > > Marcos Paulo de Souza (2):
> > >   livepatch/shadow: Introduce klp_shadow_type structure
> > >   livepatch/shadow: Add garbage collection of shadow variables
> > > 
> > > Petr Mladek (2):
> > >   livepatch/shadow: Separate code to get or use pre-allocated shadow
> > >     variable
> > >   livepatch/shadow: Separate code removing all shadow variables for a
> > >     given id
> > 
> > From my POV, the patchset is ready for pushing upstream.
> 
> Petr, what do you think about merging the first two patches, since they just
> cleanups and simplifications?

Sounds reasonable to me. I am going to push them by the end of the
week if nobody complained in the meantime.

Best Regards,
Petr



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