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selftests/x86/fsgsbase: Test GS selector on ptracer-induced GS base write
authorChang S. Bae <chang.seok.bae@intel.com>
Thu, 28 May 2020 20:14:01 +0000 (16:14 -0400)
committerThomas Gleixner <tglx@linutronix.de>
Thu, 18 Jun 2020 13:47:06 +0000 (15:47 +0200)
commit5767df01c0a9cf70eb6954f64805fcaf406bbf52
tree6ffbf09d220fb2996f3979dfa59ff6b63decb914tree | snapshot
parent158e9a935522283e1d1469a20feca0a56eee06ddcommit | diff
selftests/x86/fsgsbase: Test GS selector on ptracer-induced GS base write

The test validates that the selector is not changed when a ptracer writes
the ptracee's GS base.

Originally-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/20200528201402.1708239-16-sashal@kernel.org
tools/testing/selftests/x86/fsgsbase.c diff | blob | history
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