[LTP] [PATCH 2/2] ima_kexec.sh: Document kernel config dependencies

[Petr Vorel]

CONFIG_HAVE_IMA_KEXEC=y is enough for test, ie. test is working with:

    # CONFIG_IMA_KEXEC is not set
    CONFIG_HAVE_IMA_KEXEC=y

Probably obvious as CONFIG_HAVE_IMA_KEXEC is arch specific and
CONFIG_IMA_KEXEC is "TPM PCRs are only reset on a hard reboot."
and ima_kexec.c requires CONFIG_HAVE_IMA_KEXEC (only parts are skipped
when CONFIG_IMA_KEXEC not set) but better to clarify for users.

Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
 testcases/kernel/security/integrity/ima/tests/ima_kexec.sh | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/testcases/kernel/security/integrity/ima/tests/ima_kexec.sh b/testcases/kernel/security/integrity/ima/tests/ima_kexec.sh
index 7688690af2..de595fcdd7 100755
--- a/testcases/kernel/security/integrity/ima/tests/ima_kexec.sh
+++ b/testcases/kernel/security/integrity/ima/tests/ima_kexec.sh
@@ -6,8 +6,11 @@
 #
 # Verify that kexec cmdline is measured correctly.
 # Test attempts to kexec the existing running kernel image.
+#
 # To kexec a different kernel image export IMA_KEXEC_IMAGE=<pathname>.
 # Test requires example IMA policy loadable with LTP_IMA_LOAD_POLICY=1.
+#
+# Test requires CONFIG_HAVE_IMA_KEXEC=y (CONFIG_IMA_KEXEC is not mandatory).
 
 TST_NEEDS_CMDS="grep kexec sed"
 TST_CNT=3
-- 
2.51.0