From: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
To: buildroot@busybox.net
Subject: [Buildroot] [PATCH] gcc: powerpc32 transition to secureplt
Date: Wed, 23 Sep 2020 20:51:27 +0200 [thread overview]
Message-ID: <20200923205127.0a60882c@windsurf> (raw)
In-Reply-To: <20200923152908.21153-1-matthew.weber@rockwellcollins.com>
On Wed, 23 Sep 2020 10:29:08 -0500
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.
>
> Signed-off-by: Matthew Weber <matthew.weber@rockwellcollins.com>
> ---
> package/gcc/gcc.mk | 7 +++++++
> 1 file changed, 7 insertions(+)
Applied to master, thanks.
Thomas
--
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
next prev parent reply other threads:[~2020-09-23 18:51 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 [this message]
2020-09-23 19:01 ` Matthew Weber
2020-09-29 19:09 ` Peter Korsgaard
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