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Subject[PATCH v2 0/2] x86/FPU: FPU sanitization for in-kernel use
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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

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