From: Peter Korsgaard <peter@korsgaard.com>
To: buildroot@busybox.net
Subject: [Buildroot] [PATCH] gcc: powerpc32 transition to secureplt
Date: Tue, 29 Sep 2020 21:09:23 +0200 [thread overview]
Message-ID: <87d024v1r0.fsf@dell.be.48ers.dk> (raw)
In-Reply-To: <CANQCQpY+au2CO5iLonnz7cUc8L-1C=XhL2pWAZ=bJBQUZ=K23g@mail.gmail.com> (Matthew Weber's message of "Wed, 23 Sep 2020 14:01:44 -0500")
>>>>> "Matthew" == Matthew Weber <matthew.weber@rockwellcollins.com> writes:
> Peter,
> On Wed, Sep 23, 2020 at 10:29 AM Matt Weber
> <matthew.weber@rockwellcollins.com> wrote:
>>
>> PowerPC has two PLT models: BSS-PLT and Secure-PLT. BSS-PLT uses
>> runtime code generation to generate the PLT stubs. Secure-PLT was
>> introduced with GCC 4.1 and Binutils 2.17 (base has GCC 4.2.1 and
>> Binutils 2.17), and is a more secure PLT format, using a read-only
>> linkage table, with the dynamic linker populating a non-executable
>> index table.
>>
>> Ref to other distro/BSD transitions
>> https://patchwork.openembedded.org/patch/106621/
>> https://reviews.freebsd.org/D20598
>>
>> Fixes a bug observed when creating SELinux policy where all apps
>> require execmem because the heap requires execute before this
>> change.
>>
> This also applies to 2020.02.x and the previous release 2020.08.
Committed to 2020.02.x, 2020.05.x and 2020.08.x, thanks.
--
Bye, Peter Korsgaard
prev parent reply other threads:[~2020-09-29 19:09 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-23 15:29 [Buildroot] [PATCH] gcc: powerpc32 transition to secureplt Matt Weber
2020-09-23 18:51 ` Thomas Petazzoni
2020-09-23 19:01 ` Matthew Weber
2020-09-29 19:09 ` Peter Korsgaard [this message]
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