From: Joe Lawrence <joe.lawrence@redhat.com>
To: Joao Moreira <jmoreira@suse.de>, Miroslav Benes <mbenes@suse.cz>
Cc: live-patching@vger.kernel.org, pmladek@suse.cz, jikos@suse.cz,
nstange@suse.de, jpoimboe@redhat.com, khlebnikov@yandex-team.ru,
jeyu@kernel.org, matz@suse.de, linux-kernel@vger.kernel.org,
yamada.masahiro@socionext.com, linux-kbuild@vger.kernel.org,
michal.lkml@markovi.net
Subject: Re: [PATCH v2 2/8] kbuild: Support for Symbols.list creation
Date: Tue, 26 Mar 2019 16:53:12 -0400 [thread overview]
Message-ID: <1b6ee81b-5699-a1cc-9a85-02df0eeaed12@redhat.com> (raw)
In-Reply-To: <699e78da-36ba-8217-c509-2e9b443bd380@suse.de>
On 3/26/19 2:13 PM, Joao Moreira wrote:
>
>
> On 3/26/19 1:15 PM, Joe Lawrence wrote:
>>
>> Hi Joao,
>>
>> This change seems to work okay for (again) single object modules, but
>> I'm having issues with multi-object modules.
>>
>
> Hi Joe, thanks for the sources, this made everything much easier in my
> side :)
>
> In the patch below I change a little bit the interface used to inform
> kbuild that a module is a livepatch. Instead of defining the flag
> LIVEPATCH_ per .o file, we define it per module (what actually makes
> much more sense). We later use $(basetarget) in the Makefile for
> checking the flags. By doing so, and invoking cmd_livepatch both from
> the $(single-used-m) and $(multi-used-m) we ensure that the .livepatch
> file is created for each module, what later in the pipeline flags the
> invocation of klp-convert.
>
> I tested the following patch with the sources you provided (with little
> modifications, removing the .o from the LIVEPATCH_ definitions and using
> the module name instead of the object names), achieving successful
> compilation and conversion. I also tested against the sample
> livepatches, thus I think it might be ok now.
Cool thanks for taking a look -- I can confirm that the toy code I sent
over builds with those modifications and so does the sample and selftest
I was working on. I'll set about refactoring that klp-convert selftest
to combine .o files into a more compact module.
> Do you think we can go this way to solve the problem in v3?
Yeah, I'll add it to the list of patches to squash for v3.
Thanks,
-- Joe
next prev parent reply other threads:[~2019-03-26 20:53 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190301141313.15057-1-jmoreira@suse.de>
2019-03-18 19:18 ` [PATCH v2 0/8] klp-convert Joe Lawrence
2019-03-26 20:18 ` Joao Moreira
2019-03-26 21:03 ` Joe Lawrence
2019-04-04 11:49 ` Miroslav Benes
2019-04-04 13:19 ` Joe Lawrence
[not found] ` <20190301141313.15057-3-jmoreira@suse.de>
2019-03-18 19:19 ` [PATCH v2 2/8] kbuild: Support for Symbols.list creation Joe Lawrence
2019-03-20 19:08 ` Miroslav Benes
2019-03-26 14:40 ` Joao Moreira
2019-03-26 16:15 ` Joe Lawrence
2019-03-26 18:13 ` Joao Moreira
2019-03-26 20:53 ` Joe Lawrence [this message]
2019-03-28 20:17 ` Joe Lawrence
2019-04-01 19:35 ` Joe Lawrence
2019-04-03 12:48 ` Miroslav Benes
2019-04-03 19:10 ` Joe Lawrence
2019-04-04 9:14 ` Miroslav Benes
2019-04-04 10:59 ` Miroslav Benes
[not found] ` <20190301141313.15057-4-jmoreira@suse.de>
2019-03-18 19:20 ` [PATCH v2 3/8] livepatch: Add klp-convert tool Joe Lawrence
2019-03-20 19:36 ` Miroslav Benes
2019-03-26 20:13 ` Joao Moreira
[not found] ` <20190301141313.15057-7-jmoreira@suse.de>
2019-03-18 19:20 ` [PATCH v2 6/8] modpost: Add modinfo flag to livepatch modules Joe Lawrence
[not found] ` <20190301141313.15057-8-jmoreira@suse.de>
2019-03-18 19:21 ` [PATCH v2 7/8] livepatch: Add sample livepatch module Joe Lawrence
[not found] ` <20190301141313.15057-9-jmoreira@suse.de>
2019-03-18 19:21 ` [PATCH v2 8/8] documentation: Update on livepatch elf format Joe Lawrence
2019-03-20 19:58 ` Miroslav Benes
[not found] ` <20190301141313.15057-6-jmoreira@suse.de>
2019-03-18 19:20 ` [PATCH v2 5/8] modpost: Integrate klp-convert Joe Lawrence
2019-03-22 14:54 ` Joe Lawrence
2019-03-22 16:37 ` Joao Moreira
2019-03-22 18:29 ` Joe Lawrence
2019-04-04 11:31 ` Miroslav Benes
2019-04-04 13:55 ` Joao Moreira
[not found] <20190130165446.19479-1-jmoreira@suse.de>
[not found] ` <20190130165446.19479-3-jmoreira@suse.de>
2019-02-20 14:09 ` [PATCH v2 2/8] kbuild: Support for Symbols.list creation Miroslav Benes
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