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Re: [PATCH v2 1/6] xen/livepatch: remove useless check for duplicated sections
- To: Roger Pau Monne <roger.pau@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 25 Sep 2024 10:52:06 +0200
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- Cc: Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 25 Sep 2024 08:52:10 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 25.09.2024 10:42, Roger Pau Monne wrote:
> The current check for duplicated sections in a payload is not effective. Such
> check is done inside a loop that iterates over the sections names, it's
> logically impossible for the bitmap to be set more than once.
>
> The usage of a bitmap in check_patching_sections() has been replaced with a
> boolean, since the function just cares that at least one of the special
> sections is present.
>
> No functional change intended, as the check was useless.
>
> Fixes: 29f4ab0b0a4f ('xsplice: Implement support for
> applying/reverting/replacing patches.')
> Fixes: 76b3d4098a92 ('livepatch: Do not enforce ELF_LIVEPATCH_FUNC section
> presence')
> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
Just to clarify for my eventual picking up for backporting: Despite
the Fixes: tags there's no actual bug being fixed; it's merely code
simplification. So no need to backport.
Jan
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