linux-kernel - Re: Live patching for powerpc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 15 Apr 2016 20:01:46 +1000
From:	Michael Ellerman <mpe@...erman.id.au>
To:	Miroslav Benes <mbenes@...e.cz>, Jessica Yu <jeyu@...hat.com>
Cc:	linuxppc-dev@...abs.org, bsingharora@...il.com, duwe@....de,
	linux-kernel@...r.kernel.org, rostedt@...dmis.org,
	kamalesh@...ux.vnet.ibm.com, pmladek@...e.com, jikos@...nel.org,
	live-patching@...r.kernel.org
Subject: Re: Live patching for powerpc

On Fri, 2016-04-15 at 10:28 +0200, Miroslav Benes wrote:
> On Thu, 14 Apr 2016, Jessica Yu wrote:
> > For the 32-bit module code, I don't believe we would need to preserve
> > the .init.plt section for livepatch's call to apply_relocate_add(),
> > since relocations to init sections should've been applied during
> > module initialization, and we don't patch those types of functions.
> > Please correct me if my understanding is off.
> 
> I think you are right, but I also think we don't have to worry about 
> 32-bit powerpc anyway. This patch set supports ppc64le only so we can 
> leave it for now.

Yep. Who ever wants to do 32-bit live patch support can cross that bridge when
they come to it.

cheers