From: Borislav Petkov <bp@alien8.de>
To: X86 ML <x86@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>,
Dave Hansen <dave.hansen@intel.com>,
Nick Desaulniers <ndesaulniers@google.com>,
Petteri Aimonen <jpa@kernelbug.mail.kapsi.fi>,
LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH v2 0/2] x86/FPU: FPU sanitization for in-kernel use
Date: Wed, 24 Jun 2020 13:46:44 +0200 [thread overview]
Message-ID: <20200624114646.28953-1-bp@alien8.de> (raw)
From: Borislav Petkov <bp@suse.de>
Ok,
here's v2 with build fixes and other review comments addressed.
Thx.
Changelog:
----------
v1:
==
Hi all,
here's a proper submission of the work started by Petteri. I think I've
addressed all the feedback so far. I've added the preparation work for
the test to run, to a script run_test_fpu.sh which does some basic
checks, loads the module and runs the test for 1000 times on all CPUs,
by default. Thought this is a sane default, feel free to prove me wrong
and I'll change it.
Thx.
Petteri Aimonen (2):
x86/fpu: Reset MXCSR to default in kernel_fpu_begin()
selftests/fpu: Add an FPU selftest
arch/x86/include/asm/fpu/internal.h | 5 ++
arch/x86/kernel/fpu/core.c | 6 ++
lib/Kconfig.debug | 11 +++
lib/Makefile | 24 ++++++
lib/test_fpu.c | 89 +++++++++++++++++++++
tools/testing/selftests/Makefile | 1 +
tools/testing/selftests/fpu/.gitignore | 2 +
tools/testing/selftests/fpu/Makefile | 9 +++
tools/testing/selftests/fpu/run_test_fpu.sh | 46 +++++++++++
tools/testing/selftests/fpu/test_fpu.c | 61 ++++++++++++++
10 files changed, 254 insertions(+)
create mode 100644 lib/test_fpu.c
create mode 100644 tools/testing/selftests/fpu/.gitignore
create mode 100644 tools/testing/selftests/fpu/Makefile
create mode 100755 tools/testing/selftests/fpu/run_test_fpu.sh
create mode 100644 tools/testing/selftests/fpu/test_fpu.c
--
2.21.0
next reply other threads:[~2020-06-24 11:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-24 11:46 Borislav Petkov [this message]
2020-06-24 11:46 ` [PATCH v2 1/2] x86/fpu: Reset MXCSR to default in kernel_fpu_begin() Borislav Petkov
2020-06-29 8:34 ` [tip: x86/fpu] " tip-bot2 for Petteri Aimonen
2020-06-24 11:46 ` [PATCH v2 2/2] selftests/fpu: Add an FPU selftest Borislav Petkov
2020-06-24 17:51 ` Nick Desaulniers
2020-06-29 8:34 ` [tip: x86/fpu] " tip-bot2 for Petteri Aimonen
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