From: Thomas Garnier <thgarnie@chromium.org>
To: kernel-hardening@lists.openwall.com
Cc: kristen@linux.intel.com, keescook@chromium.org,
Herbert Xu <herbert@gondor.apana.org.au>,
"David S. Miller" <davem@davemloft.net>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, Andy Lutomirski <luto@kernel.org>,
Juergen Gross <jgross@suse.com>,
Alok Kataria <akataria@vmware.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Len Brown <len.brown@intel.com>, Pavel Machek <pavel@ucw.cz>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Garnier <thgarnie@chromium.org>,
Nadav Amit <namit@vmware.com>, Jann Horn <jannh@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Feng Tang <feng.tang@intel.com>,
Maran Wilson <maran.wilson@oracle.com>,
Enrico Weigelt <info@metux.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Alexios Zavras <alexios.zavras@intel.com>,
linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org,
linux-pm@vger.kernel.org
Subject: [PATCH v8 00/11] x86: PIE support to extend KASLR randomization
Date: Mon, 8 Jul 2019 10:48:53 -0700 [thread overview]
Message-ID: <20190708174913.123308-1-thgarnie@chromium.org> (raw)
Splitting the previous serie in two. This part contains assembly code
changes required for PIE but without any direct dependencies with the
rest of the patchset.
Changes:
- patch v8 (assembly):
- Fix issues in crypto changes (thanks to Eric Biggers).
- Remove unnecessary jump table change.
- Change author and signoff to chromium email address.
- patch v7 (assembly):
- Split patchset and reorder changes.
- patch v6:
- Rebase on latest changes in jump tables and crypto.
- Fix wording on couple commits.
- Revisit checkpatch warnings.
- Moving to @chromium.org.
- patch v5:
- Adapt new crypto modules for PIE.
- Improve per-cpu commit message.
- Fix xen 32-bit build error with .quad.
- Remove extra code for ftrace.
- patch v4:
- Simplify early boot by removing global variables.
- Modify the mcount location script for __mcount_loc intead of the address
read in the ftrace implementation.
- Edit commit description to explain better where the kernel can be located.
- Streamlined the testing done on each patch proposal. Always testing
hibernation, suspend, ftrace and kprobe to ensure no regressions.
- patch v3:
- Update on message to describe longer term PIE goal.
- Minor change on ftrace if condition.
- Changed code using xchgq.
- patch v2:
- Adapt patch to work post KPTI and compiler changes
- Redo all performance testing with latest configs and compilers
- Simplify mov macro on PIE (MOVABS now)
- Reduce GOT footprint
- patch v1:
- Simplify ftrace implementation.
- Use gcc mstack-protector-guard-reg=%gs with PIE when possible.
- rfc v3:
- Use --emit-relocs instead of -pie to reduce dynamic relocation space on
mapped memory. It also simplifies the relocation process.
- Move the start the module section next to the kernel. Remove the need for
-mcmodel=large on modules. Extends module space from 1 to 2G maximum.
- Support for XEN PVH as 32-bit relocations can be ignored with
--emit-relocs.
- Support for GOT relocations previously done automatically with -pie.
- Remove need for dynamic PLT in modules.
- Support dymamic GOT for modules.
- rfc v2:
- Add support for global stack cookie while compiler default to fs without
mcmodel=kernel
- Change patch 7 to correctly jump out of the identity mapping on kexec load
preserve.
These patches make some of the changes necessary to build the kernel as
Position Independent Executable (PIE) on x86_64. Another patchset will
add the PIE option and larger architecture changes.
The patches:
- 1, 3-11: Change in assembly code to be PIE compliant.
- 2: Add a new _ASM_MOVABS macro to fetch a symbol address generically.
diffstat:
crypto/aegis128-aesni-asm.S | 6 +-
crypto/aegis128l-aesni-asm.S | 8 +--
crypto/aegis256-aesni-asm.S | 6 +-
crypto/aes-x86_64-asm_64.S | 45 ++++++++++------
crypto/aesni-intel_asm.S | 8 +--
crypto/aesni-intel_avx-x86_64.S | 3 -
crypto/camellia-aesni-avx-asm_64.S | 42 +++++++--------
crypto/camellia-aesni-avx2-asm_64.S | 44 ++++++++--------
crypto/camellia-x86_64-asm_64.S | 8 +--
crypto/cast5-avx-x86_64-asm_64.S | 50 ++++++++++--------
crypto/cast6-avx-x86_64-asm_64.S | 44 +++++++++-------
crypto/des3_ede-asm_64.S | 96 ++++++++++++++++++++++++------------
crypto/ghash-clmulni-intel_asm.S | 4 -
crypto/glue_helper-asm-avx.S | 4 -
crypto/glue_helper-asm-avx2.S | 6 +-
crypto/morus1280-avx2-asm.S | 4 -
crypto/morus1280-sse2-asm.S | 8 +--
crypto/morus640-sse2-asm.S | 6 +-
crypto/sha256-avx2-asm.S | 18 ++++--
entry/entry_64.S | 16 ++++--
include/asm/alternative.h | 6 +-
include/asm/asm.h | 1
include/asm/paravirt_types.h | 25 +++++++--
include/asm/pm-trace.h | 2
include/asm/processor.h | 6 +-
kernel/acpi/wakeup_64.S | 31 ++++++-----
kernel/head_64.S | 16 +++---
kernel/relocate_kernel_64.S | 2
power/hibernate_asm_64.S | 4 -
29 files changed, 306 insertions(+), 213 deletions(-)
Patchset is based on next-20190708.
next reply other threads:[~2019-07-08 17:49 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-08 17:48 Thomas Garnier [this message]
2019-07-08 17:48 ` [PATCH v8 01/11] x86/crypto: Adapt assembly for PIE support Thomas Garnier
2019-07-08 17:48 ` [PATCH v8 02/11] x86: Add macro to get symbol address " Thomas Garnier
2019-07-08 17:48 ` [PATCH v8 03/11] x86: relocate_kernel - Adapt assembly " Thomas Garnier
2019-07-08 17:48 ` [PATCH v8 04/11] x86/entry/64: " Thomas Garnier
2019-07-08 17:48 ` [PATCH v8 05/11] x86: pm-trace - " Thomas Garnier
2019-07-08 17:48 ` [PATCH v8 06/11] x86/CPU: " Thomas Garnier
2019-07-08 17:49 ` [PATCH v8 07/11] x86/acpi: " Thomas Garnier
2019-07-08 17:49 ` [PATCH v8 08/11] x86/boot/64: " Thomas Garnier
2019-07-08 17:49 ` [PATCH v8 09/11] x86/power/64: " Thomas Garnier
2019-07-08 17:49 ` [PATCH v8 10/11] x86/paravirt: " Thomas Garnier
2019-07-08 17:49 ` [PATCH v8 11/11] x86/alternatives: " Thomas Garnier
2019-07-30 18:01 ` [PATCH v8 00/11] x86: PIE support to extend KASLR randomization Kees Cook
2019-07-30 19:09 ` Thomas Garnier
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