selftests/x86/fsgsbase: Test ptracer-induced GS base write with FSGSBASE

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This validates that GS selector and base are independently preserved in
ptrace commands.

Suggested-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Link: https://lkml.kernel.org/r/20200528201402.1708239-17-sashal@kernel.org

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Chang S. Bae 2020-05-28 16:14:02 -04:00 • committed by Thomas Gleixner

parent 291fd83569

commit 5e7ec8578f

1 changed files with 9 additions and 2 deletions

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tools/testing/selftests/x86/fsgsbase.c

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