linux-kernel - [PATCH 0/2] selftests/x86: AMX-related test improvements

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Message-Id: <20220401221014.13556-1-chang.seok.bae@intel.com>
Date:   Fri,  1 Apr 2022 15:10:12 -0700
From:   "Chang S. Bae" <chang.seok.bae@...el.com>
To:     linux-kselftest@...r.kernel.org, shuah@...nel.org,
        linux-kernel@...r.kernel.org
Cc:     dave.hansen@...ux.intel.com, tglx@...utronix.de, bp@...e.de,
        chang.seok.bae@...el.com
Subject: [PATCH 0/2] selftests/x86: AMX-related test improvements

A couple of test updates are included:

* With this option [1,2], the kernel's altstack check becomes stringent.
  The x86 sigaltstack test is ignorant about this. Adjust the test now. 
  This check was established [3] to ensure every AMX task's altstack is 
  sufficient (regardless of that option) [4].

* The AMX test wrongly fails on non-AMX machines. Fix the code to skip the
  test instead.

The series is available in this repository:
  git://github.com/intel/amx-linux.git selftest

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/x86/Kconfig#n2432
[2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/admin-guide/kernel-parameters.txt#n5676
[3] 3aac3ebea08f ("x86/signal: Implement sigaltstack size validation")
[4] 4b7ca609a33d ("x86/signal: Use fpu::__state_user_size for sigalt stack validation")

Chang S. Bae (2):
  selftests/x86/signal: Adjust the test to the kernel's altstack check
  selftests/x86/amx: Fix the test to avoid failure when AMX is
    unavailable

 tools/testing/selftests/x86/amx.c         | 42 +++++++++++++++++------
 tools/testing/selftests/x86/sigaltstack.c | 12 ++++++-
 2 files changed, 42 insertions(+), 12 deletions(-)


base-commit: f443e374ae131c168a065ea1748feac6b2e76613
-- 
2.17.1