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selftests/x86/fsgsbase: Fix a comment in the ptrace_write_gsbase test

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A comment was unclear.  Fix it.

Fixes: 5e7ec8578f ("selftests/x86/fsgsbase: Test ptracer-induced GS base write with FSGSBASE")
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/901034a91a40169ec84f1f699ea86704dff762e4.1593192140.git.luto@kernel.org
This commit is contained in:
Andy Lutomirski 2020-06-26 10:24:27 -07:00 committed by Thomas Gleixner
parent a5d25e01c8
commit 979c2c4247
1 changed files with 2 additions and 1 deletions
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3
tools/testing/selftests/x86/fsgsbase.c
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@ -498,7 +498,8 @@ static void test_ptrace_write_gsbase(void)
* base would zero the selector. On newer kernels,
* this behavior has changed -- poking the base
* changes only the base and, if FSGSBASE is not
* available, this may not effect.
* available, this may have no effect once the tracee
* is resumed.
*/
if (gs == 0)
printf("\tNote: this is expected behavior on older kernels.\n");