Re: module: preserve Elf information for livepatch modules

From	Rusty Russell <rusty@rustcorp.com.au>
Newsgroups	linux.kernel
Subject	Re: module: preserve Elf information for livepatch modules
Date	2016-01-14 21:30 +0100
Message-ID	<qQWGT-3K7-25@gated-at.bofh.it> (permalink)
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Jessica Yu <jeyu@redhat.com> writes:
> +++ Rusty Russell [11/01/16 11:55 +1030]:
>>This comment is a bit misleading: it's actually pointing into the
>>temporary module copy, which will be discarded.  The init section is
>>slightly different...
>
> Ah, perhaps I'm misunderstanding something..
>
> Since copy_module_elf() is called after move_module(), my
> understanding is that all the section sh_addr's should be pointing
> to either module core memory or module init memory (instead of the
> initial temporary copy of the module in info->hdr).

You're absolutely correct; I'd forgotten that particular kallsyms twist.

Sorry for the noise!
Rusty.

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[RFC PATCH v3 2/6] module: preserve Elf information for livepatch modules Jessica Yu <jeyu@redhat.com> - 2016-01-08 20:30 +0100
  Re: [RFC PATCH v3 2/6] module: preserve Elf information for livepatch modules Rusty Russell <rusty@rustcorp.com.au> - 2016-01-11 02:30 +0100
    Re: module: preserve Elf information for livepatch modules Jessica Yu <jeyu@redhat.com> - 2016-01-14 05:50 +0100
      Re: module: preserve Elf information for livepatch modules Rusty Russell <rusty@rustcorp.com.au> - 2016-01-14 21:30 +0100

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