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

[tip-bot2 for Andy Lutomirski]

The following commit has been merged into the x86/fsgsbase branch of tip:

Commit-ID:     979c2c4247cafd8a91628a7306b6871efbd12fdb
Gitweb:        https://git.kernel.org/tip/979c2c4247cafd8a91628a7306b6871efbd12fdb
Author:        Andy Lutomirski <luto@xxxxxxxxxx>
AuthorDate:    Fri, 26 Jun 2020 10:24:27 -07:00
Committer:     Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitterDate: Wed, 01 Jul 2020 15:27:20 +02:00

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

A comment was unclear.  Fix it.

Fixes: 5e7ec8578fa3 ("selftests/x86/fsgsbase: Test ptracer-induced GS base write with FSGSBASE")
Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/901034a91a40169ec84f1f699ea86704dff762e4.1593192140.git.luto@xxxxxxxxxx

---
 tools/testing/selftests/x86/fsgsbase.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/x86/fsgsbase.c b/tools/testing/selftests/x86/fsgsbase.c
index 9a43498..f47495d 100644
--- a/tools/testing/selftests/x86/fsgsbase.c
+++ b/tools/testing/selftests/x86/fsgsbase.c
@@ -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");