From: Josh Poimboeuf <jpoimboe@redhat.com>
To: Kees Cook <keescook@chromium.org>
Cc: Borislav Petkov <bp@suse.de>,
Kristen Carlson Accardi <kristen@linux.intel.com>,
Tony Luck <tony.luck@intel.com>,
Alexander Lobakin <alexandr.lobakin@intel.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Arnd Bergmann <arnd@arndb.de>, Joerg Roedel <jroedel@suse.de>,
Arvind Sankar <nivedita@alum.mit.edu>,
Jing Yangyang <jing.yangyang@zte.com.cn>,
Abaci Robot <abaci@linux.alibaba.com>,
Jiapeng Chong <jiapeng.chong@linux.alibaba.com>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Andrey Konovalov <andreyknvl@gmail.com>,
Miroslav Benes <mbenes@suse.cz>,
"H. Nikolaus Schaller" <hns@goldelico.com>,
Fangrui Song <maskray@google.com>,
linux-kernel@vger.kernel.org, x86@kernel.org,
linux-arch@vger.kernel.org, linux-hardening@vger.kernel.org
Subject: Re: [PATCH 4/4] vmlinux.lds.h: Have ORC lookup cover entire _etext - _stext
Date: Wed, 13 Oct 2021 17:29:41 -0700 [thread overview]
Message-ID: <20211014002941.3ywwcfhf53bpw5xp@treble> (raw)
In-Reply-To: <20211013175742.1197608-5-keescook@chromium.org>
On Wed, Oct 13, 2021 at 10:57:42AM -0700, Kees Cook wrote:
> From: Kristen Carlson Accardi <kristen@linux.intel.com>
>
> When using -ffunction-sections to place each function in its own text
> section (so it can be randomized at load time in the future FGKASLR
> series), the linker will place most of the functions into separate .text.*
> sections. SIZEOF(.text) won't work here for calculating the ORC lookup
> table size, so the total text size must be calculated to include .text
> AND all .text.* sections.
>
> Signed-off-by: Kristen Carlson Accardi <kristen@linux.intel.com>
> Reviewed-by: Tony Luck <tony.luck@intel.com>
> Tested-by: Tony Luck <tony.luck@intel.com>
> Reviewed-by: Kees Cook <keescook@chromium.org>
> [ alobakin: move it to vmlinux.lds.h and make arch-indep ]
> Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
> Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
--
Josh
next prev parent reply other threads:[~2021-10-14 0:29 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-13 17:57 [PATCH 0/4] x86: Various clean-ups in support of FGKASLR Kees Cook
2021-10-13 17:57 ` [PATCH 1/4] x86/tools/relocs: Support >64K section headers Kees Cook
2021-10-28 13:29 ` [tip: x86/core] " tip-bot2 for Kristen Carlson Accardi
2021-10-13 17:57 ` [PATCH 2/4] x86/boot: Allow a "silent" kaslr random byte fetch Kees Cook
2021-10-13 18:10 ` Nick Desaulniers
2021-10-28 13:29 ` [tip: x86/core] " tip-bot2 for Kees Cook
2021-10-13 17:57 ` [PATCH 3/4] x86/boot/compressed: Avoid duplicate malloc() implementations Kees Cook
2021-10-28 13:29 ` [tip: x86/core] " tip-bot2 for Kees Cook
2021-10-13 17:57 ` [PATCH 4/4] vmlinux.lds.h: Have ORC lookup cover entire _etext - _stext Kees Cook
2021-10-14 0:29 ` Josh Poimboeuf [this message]
2021-10-28 13:29 ` [tip: x86/core] " tip-bot2 for Kristen Carlson Accardi
2021-10-15 18:27 ` [PATCH 0/4] x86: Various clean-ups in support of FGKASLR Alexander Lobakin
2021-10-27 6:10 ` Kees Cook
2021-10-27 6:57 ` Peter Zijlstra
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20211014002941.3ywwcfhf53bpw5xp@treble \
--to=jpoimboe@redhat.com \
--cc=abaci@linux.alibaba.com \
--cc=alexandr.lobakin@intel.com \
--cc=andreyknvl@gmail.com \
--cc=arnd@arndb.de \
--cc=bp@alien8.de \
--cc=bp@suse.de \
--cc=hns@goldelico.com \
--cc=hpa@zytor.com \
--cc=jiapeng.chong@linux.alibaba.com \
--cc=jing.yangyang@zte.com.cn \
--cc=jroedel@suse.de \
--cc=keescook@chromium.org \
--cc=kristen@linux.intel.com \
--cc=linux-arch@vger.kernel.org \
--cc=linux-hardening@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=maskray@google.com \
--cc=mbenes@suse.cz \
--cc=mingo@redhat.com \
--cc=nathan@kernel.org \
--cc=ndesaulniers@google.com \
--cc=nivedita@alum.mit.edu \
--cc=tglx@linutronix.de \
--cc=tony.luck@intel.com \
--cc=vincenzo.frascino@arm.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).