linux-kernel - Re: Implement kernel live patching for ppc64le (ABIv2)

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Message-ID: <20160127015304.GA19619@packer-debian-8-amd64.digitalocean.com>
Date:	Tue, 26 Jan 2016 20:53:05 -0500
From:	Jessica Yu <jeyu@...hat.com>
To:	Miroslav Benes <mbenes@...e.cz>
Cc:	Torsten Duwe <duwe@....de>, Steven Rostedt <rostedt@...dmis.org>,
	Michael Ellerman <mpe@...erman.id.au>,
	Jiri Kosina <jkosina@...e.cz>, linuxppc-dev@...ts.ozlabs.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	live-patching@...r.kernel.org, pmladek@...e.cz
Subject: Re: Implement kernel live patching for ppc64le (ABIv2)

+++ Miroslav Benes [26/01/16 15:14 +0100]:
>
>[ Jessica added to CC list so she is aware that there are plans to
>implement livepatch on ppc64le ]
>
>On Tue, 26 Jan 2016, Torsten Duwe wrote:
>
>> On Tue, Jan 26, 2016 at 11:50:25AM +0100, Miroslav Benes wrote:
>> > > + */
>> > > +int klp_write_module_reloc(struct module *mod, unsigned long type,
>> > > +			    unsigned long loc, unsigned long value)
>> > > +{
>> > > +	/* This requires infrastructure changes; we need the loadinfos. */
>> > > +	pr_err("lpc_write_module_reloc not yet supported\n");
>> >
>> > This is a nit, but there is no lpc_write_module_reloc. It should be
>> > klp_write_module_reloc.
>>
>> Indeed. Michael, feel free to fix this on the fly or not. It needs to
>> disappear anyway and be replaced with functionality.
>
>Or not at all thanks to Jessica's effort [1].
>
>Miroslav
>
>[1] http://lkml.kernel.org/g/1452281304-28618-1-git-send-email-jeyu@redhat.com

Miroslav, thanks for the CC. Indeed, if things go well, there may be
no need to implement klp_write_module_reloc() anymore in the near
future. :-)

Jessica