linux-kernel - [RFC PATCH v4 0/2] Introduce XSAVE/XRSTOR self-test

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 for Android: free password hash cracker in your pocket

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

Message-Id: <cover.1631776654.git.pengfei.xu@intel.com>
Date:   Thu, 16 Sep 2021 15:45:31 +0800
From:   Pengfei Xu <pengfei.xu@...el.com>
To:     Shuah Khan <skhan@...uxfoundation.org>,
        linux-kselftest <linux-kselftest@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Cc:     Pengfei Xu <pengfei.xu@...el.com>, Heng Su <heng.su@...el.com>,
        Yu Yu-cheng <yu-cheng.yu@...el.com>,
        Yu Fenghua <fenghua.yu@...el.com>,
        Hansen Dave <dave.hansen@...el.com>,
        Luck Tony <tony.luck@...el.com>,
        Mehta Sohil <sohil.mehta@...el.com>,
        Chen Yu C <yu.c.chen@...el.com>
Subject: [RFC PATCH v4 0/2] Introduce XSAVE/XRSTOR self-test

The XSAVE feature set supports the saving and restoring of state components,
which is used for process context switching. The state components include
x87 state for FPU execution environment, SSE state, AVX state and so on. In
order to ensure that XSAVE works correctly, add XSAVE basic test for
XSAVE architecture functionality.

This patch set tests and verifies the basic functions of XSAVE/XRSTOR in
user space; during and after signal processing on the x86 platform, the
XSAVE contents of the process should not be changed.

This series introduces only the most basic XSAVE tests.  In the
future, the intention is to continue expanding the scope of
these selftests to include more kernel XSAVE-related functionality
and XSAVE-managed features like AMX and shadow stacks.

========
- Change from v3 to v4:
  - Improve the comment in patch 1.

- Change from v2 to v3:
  - Improve the description of patch 2 git log.

- Change from v1 to v2:
  - Improve the cover-letter. (Dave Hansen)

Pengfei Xu (2):
  selftests/xsave: test basic XSAVE architecture functionality
  selftests/xsave: add xsave test during and after signal handling

 tools/testing/selftests/Makefile              |   1 +
 tools/testing/selftests/xsave/.gitignore      |   3 +
 tools/testing/selftests/xsave/Makefile        |   6 +
 tools/testing/selftests/xsave/xsave_common.h  | 246 ++++++++++++++++++
 .../selftests/xsave/xsave_instruction.c       |  83 ++++++
 .../selftests/xsave/xsave_signal_handle.c     | 184 +++++++++++++
 6 files changed, 523 insertions(+)
 create mode 100644 tools/testing/selftests/xsave/.gitignore
 create mode 100644 tools/testing/selftests/xsave/Makefile
 create mode 100644 tools/testing/selftests/xsave/xsave_common.h
 create mode 100644 tools/testing/selftests/xsave/xsave_instruction.c
 create mode 100644 tools/testing/selftests/xsave/xsave_signal_handle.c

-- 
2.20.1