linux-kernel - [PATCH v2 0/4] support FEAT_MTE_STORE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250403174701.74312-1-yeoreum.yun@arm.com>
Date: Thu,  3 Apr 2025 18:46:57 +0100
From: Yeoreum Yun <yeoreum.yun@....com>
To: catalin.marinas@....com,
	will@...nel.org,
	broonie@...nel.org,
	anshuman.khandual@....com,
	joey.gouly@....com,
	maz@...nel.org,
	oliver.upton@...ux.dev,
	frederic@...nel.org,
	james.morse@....com,
	hardevsinh.palaniya@...iconsignals.io,
	shameerali.kolothum.thodi@...wei.com,
	huangxiaojia2@...wei.com,
	mark.rutland@....com,
	samuel.holland@...ive.com,
	palmer@...osinc.com,
	charlie@...osinc.com,
	thiago.bauermann@...aro.org,
	bgray@...ux.ibm.com,
	tglx@...utronix.de,
	puranjay@...nel.org,
	david@...hat.com,
	yang@...amperecomputing.com,
	mbenes@...e.cz,
	joel.granados@...nel.org
Cc: linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	nd@....com,
	Yeoreum Yun <yeoreum.yun@....com>
Subject: [PATCH v2 0/4] support FEAT_MTE_STORE_ONLY feature

The FEAT_MTE_STORE_ONLY feature provides support for
tag check for store operation only. read operation is considered
as unchecked operation so it doesn't raise tag check fault.

NOTE:
  This patches based on https://lore.kernel.org/linux-arm-kernel/20250403172758.67106-1-yeoreum.yun@arm.com/

Since v1:
  - add doc to elf_hwcaps.rst
  - add MTE_STORE_ONLY hwcap test

Yeoreum Yun (4):
  arm64/feature: add MTE_STORE_ONLY feature
  prtcl: introduce PR_MTE_STORE_ONLY
  arm64/kernel: support store-only mte tag check
  tools/kselftest: add MTE_STORE_ONLY feature hwcap test

 Documentation/arch/arm64/elf_hwcaps.rst   |  3 +++
 arch/arm64/include/asm/hwcap.h            |  1 +
 arch/arm64/include/asm/processor.h        |  2 ++
 arch/arm64/include/uapi/asm/hwcap.h       |  1 +
 arch/arm64/kernel/cpufeature.c            |  9 +++++++++
 arch/arm64/kernel/cpuinfo.c               |  1 +
 arch/arm64/kernel/mte.c                   | 11 ++++++++++-
 arch/arm64/kernel/process.c               |  6 +++++-
 arch/arm64/tools/cpucaps                  |  1 +
 include/uapi/linux/prctl.h                |  2 ++
 tools/testing/selftests/arm64/abi/hwcap.c |  6 ++++++
 11 files changed, 41 insertions(+), 2 deletions(-)

--
LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}