From: Amit Daniel Kachhap <amit.kachhap@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: Mark Rutland <mark.rutland@arm.com>,
Kees Cook <keescook@chromium.org>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Kristina Martsenko <kristina.martsenko@arm.com>,
Mark Brown <broonie@kernel.org>,
James Morse <james.morse@arm.com>,
Amit Daniel Kachhap <amit.kachhap@arm.com>,
Vincenzo Frascino <Vincenzo.Frascino@arm.com>,
Will Deacon <will@kernel.org>, Dave Martin <Dave.Martin@arm.com>
Subject: [PATCH 0/2] arm64: add Armv8.6 pointer authentication
Date: Wed, 19 Feb 2020 18:30:38 +0530 [thread overview]
Message-ID: <1582117240-15330-1-git-send-email-amit.kachhap@arm.com> (raw)
Hi all,
These patch series adds support for Armv8.6 pointer authentication
enhanced mandatory features. These features are,
* Enhanced PAC generation algorithm.
* Generate fault when authenticate instruction fails.
For the first feature no code change is needed and for the second feature
a ptrauth fault handler is added.
More details can be found here [1].
This series is based on kernel version v5.6-rc2 and on recent in-kernel
ptrauth posted patches [2].
Regards,
Amit
[1]: https://community.arm.com/developer/ip-products/processors/b/processors-ip-blog/posts/arm-architecture-developments-armv8-6-a
[2]: http://lists.infradead.org/pipermail/linux-arm-kernel/2020-February/711699.html
Amit Daniel Kachhap (2):
arm64: ptrauth: add pointer authentication Armv8.6 enhanced feature
arm64: kprobe: disable probe of fault prone ptrauth instruction
arch/arm64/include/asm/esr.h | 4 +++-
arch/arm64/include/asm/exception.h | 1 +
arch/arm64/include/asm/insn.h | 13 +++++++------
arch/arm64/include/asm/sysreg.h | 24 ++++++++++++++++--------
arch/arm64/kernel/cpufeature.c | 4 ++--
arch/arm64/kernel/entry-common.c | 25 +++++++++++++++++++++++++
arch/arm64/kernel/insn.c | 1 +
arch/arm64/kernel/probes/decode-insn.c | 2 +-
arch/arm64/kernel/traps.c | 18 ++++++++++++++++++
9 files changed, 74 insertions(+), 18 deletions(-)
--
2.7.4
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next reply other threads:[~2020-02-19 13:02 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-19 13:00 Amit Daniel Kachhap [this message]
2020-02-19 13:00 ` [PATCH 1/2] arm64: ptrauth: add pointer authentication Armv8.6 enhanced feature Amit Daniel Kachhap
2020-02-28 11:57 ` Will Deacon
2020-02-28 12:03 ` Mark Rutland
2020-02-28 12:23 ` Will Deacon
2020-03-02 12:48 ` Amit Kachhap
2020-03-02 16:29 ` Will Deacon
2020-02-19 13:00 ` [PATCH 2/2] arm64: kprobe: disable probe of fault prone ptrauth instruction Amit Daniel Kachhap
2020-02-27 16:48 ` Mark Rutland
2020-02-28 11:12 ` Amit Kachhap
2020-02-28 11:18 ` Will Deacon
2020-02-28 11:31 ` Mark Rutland
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