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selftests/x86/fsgsbase: Test ptracer-induced GS base write with FSGSBASE
authorChang S. Bae <chang.seok.bae@intel.com>
Thu, 28 May 2020 20:14:02 +0000 (16:14 -0400)
committerThomas Gleixner <tglx@linutronix.de>
Thu, 18 Jun 2020 13:47:07 +0000 (15:47 +0200)
commitb061abed60fa978011489a3e615b252d32212403
tree0407472ec5427172839114e37fcb812b19478a2btree | snapshot
parent5767df01c0a9cf70eb6954f64805fcaf406bbf52commit | diff
selftests/x86/fsgsbase: Test ptracer-induced GS base write with FSGSBASE

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
tools/testing/selftests/x86/fsgsbase.c diff | blob | history
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