From: Randy Dunlap <rdunlap@infradead.org>
To: Thomas Garnier <thgarnie@google.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
"David S . Miller" <davem@davemloft.net>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H . Peter Anvin" <hpa@zytor.com>,
Peter Zijlstra <peterz@infradead.org>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Philippe Ombredanne <pombredanne@nexb.com>,
Kate Stewart <kstewart@linuxfoundation.org>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Yonghong Song <yhs@fb.com>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
Kees Cook <keescook@chromium.org>,
Tom Lendacky <thomas.lendacky@amd.com>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
Andy Lutomirski <luto@kernel.org>,
Dominik Brodowski <linux@dominikbrodowski.net>,
Borislav Petkov <bp@alien8.de>, Borislav Petkov <bp@suse.de>,
"Rafael J . Wysocki" <rjw@rjwysocki.net>Len
Cc: linux-arch@vger.kernel.org, kvm@vger.kernel.org,
linux-pm@vger.kernel.org, x86@kernel.org,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org,
linux-sparse@vger.kernel.org, linux-crypto@vger.kernel.org,
kernel-hardening@lists.openwall.com,
xen-devel@lists.xenproject.org
Subject: Re: [PATCH v3 23/27] x86/modules: Adapt module loading for PIE support
Date: Wed, 23 May 2018 14:26:51 -0700 [thread overview]
Message-ID: <168ebedb-7c27-d1f3-c2f9-223d44186a52@infradead.org> (raw)
In-Reply-To: <20180523195421.180248-24-thgarnie@google.com>
Hi,
(for several patches in this series:)
The commit message is confusing. See below.
On 05/23/2018 12:54 PM, Thomas Garnier wrote:
> Adapt module loading to support PIE relocations. Generate dynamic GOT if
> a symbol requires it but no entry exist in the kernel GOT.
exists
>
> Position Independent Executable (PIE) support will allow to extended the
will allow us to extend the
> KASLR randomization range below the -2G memory limit.
Does that say "below th negative 2G memory limit"?
I don't get it.
>
> Signed-off-by: Thomas Garnier <thgarnie@google.com>
> ---
> arch/x86/Makefile | 4 +
> arch/x86/include/asm/module.h | 11 ++
> arch/x86/include/asm/sections.h | 4 +
> arch/x86/kernel/module.c | 181 +++++++++++++++++++++++++++++++-
> arch/x86/kernel/module.lds | 3 +
> 5 files changed, 198 insertions(+), 5 deletions(-)
> create mode 100644 arch/x86/kernel/module.lds
Thanks,
--
~Randy
next prev parent reply other threads:[~2018-05-23 21:26 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-23 19:53 [PATCH v3 00/27] x86: PIE support and option to extend KASLR randomization Thomas Garnier via Virtualization
2018-05-23 19:53 ` [PATCH v3 01/27] x86/crypto: Adapt assembly for PIE support Thomas Garnier via Virtualization
2018-05-23 19:53 ` [PATCH v3 02/27] x86: Use symbol name on bug table " Thomas Garnier via Virtualization
2018-05-23 19:53 ` [PATCH v3 03/27] x86: Use symbol name in jump " Thomas Garnier
2018-05-23 19:53 ` [PATCH v3 04/27] x86: Add macro to get symbol address " Thomas Garnier
2018-05-23 19:53 ` [PATCH v3 05/27] x86: relocate_kernel - Adapt assembly " Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 06/27] x86/entry/64: " Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 07/27] x86: pm-trace - " Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 08/27] x86/CPU: " Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 09/27] x86/acpi: " Thomas Garnier
2018-05-24 11:03 ` Pavel Machek
2018-05-24 16:35 ` Thomas Garnier
2018-05-25 9:14 ` Pavel Machek
2018-05-25 17:00 ` Thomas Garnier
2018-05-29 12:31 ` Pavel Machek
2018-05-29 15:55 ` Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 10/27] x86/boot/64: " Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 11/27] x86/power/64: " Thomas Garnier
2018-05-24 11:03 ` Pavel Machek
2018-05-24 16:37 ` Thomas Garnier via Virtualization
2018-05-25 9:10 ` Pavel Machek
2018-05-23 19:54 ` [PATCH v3 12/27] x86/paravirt: " Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 13/27] x86/boot/64: Build head64.c as mcmodel large when PIE is enabled Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 14/27] x86/percpu: Adapt percpu for PIE support Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 15/27] compiler: Option to default to hidden symbols Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 16/27] compiler: Option to add PROVIDE_HIDDEN replacement for weak symbols Thomas Garnier
2018-05-23 21:16 ` Randy Dunlap
2018-05-23 19:54 ` [PATCH v3 17/27] x86/relocs: Handle PIE relocations Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 18/27] xen: Adapt assembly for PIE support Thomas Garnier
2018-05-24 9:11 ` Juergen Gross
2018-05-23 19:54 ` [PATCH v3 19/27] kvm: " Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 20/27] x86: Support global stack cookie Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 21/27] x86/ftrace: Adapt function tracing for PIE support Thomas Garnier
2018-05-24 11:40 ` Petr Mladek
2018-05-24 20:16 ` Steven Rostedt
2018-05-24 20:41 ` Thomas Garnier via Virtualization
2018-05-29 18:37 ` Thomas Garnier via Virtualization
2018-05-23 19:54 ` [PATCH v3 22/27] x86/modules: Add option to start module section after kernel Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 23/27] x86/modules: Adapt module loading for PIE support Thomas Garnier
2018-05-23 21:26 ` Randy Dunlap [this message]
2018-05-23 22:01 ` Thomas Garnier
2018-05-23 23:07 ` Randy Dunlap
2018-05-23 19:54 ` [PATCH v3 24/27] x86/mm: Make the x86 GOT read-only Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 25/27] x86/pie: Add option to build the kernel as PIE Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 26/27] x86/relocs: Add option to generate 64-bit relocations Thomas Garnier
2018-05-23 19:54 ` [PATCH v3 27/27] x86/kaslr: Add option to extend KASLR range from 1GB to 3GB Thomas Garnier
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