From 080bbbbcab18c8cb8c148afb90e9de8cd2faf24c Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@kernel.org>
Date: Thu, 19 Aug 2021 17:57:23 +0100
Subject: [PATCH] kselftest/arm64: pac: Fix skipping of tests on systems without PAC
Git-commit: 0c69bd2ca6ee20064dde7853cd749284e053a874
Patch-mainline: v5.15-rc1
References: stable-5.14.6

[ Upstream commit 0c69bd2ca6ee20064dde7853cd749284e053a874 ]

The PAC tests check to see if the system supports the relevant PAC features
but instead of skipping the tests if they can't be executed they fail the
tests which makes things look like they're not working when they are.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210819165723.43903-1-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 tools/testing/selftests/arm64/pauth/pac.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/arm64/pauth/pac.c b/tools/testing/selftests/arm64/pauth/pac.c
index 592fe538506e..b743daa772f5 100644
--- a/tools/testing/selftests/arm64/pauth/pac.c
+++ b/tools/testing/selftests/arm64/pauth/pac.c
@@ -25,13 +25,15 @@
 do { \
 	unsigned long hwcaps = getauxval(AT_HWCAP); \
 	/* data key instructions are not in NOP space. This prevents a SIGILL */ \
-	ASSERT_NE(0, hwcaps & HWCAP_PACA) TH_LOG("PAUTH not enabled"); \
+	if (!(hwcaps & HWCAP_PACA))					\
+		SKIP(return, "PAUTH not enabled"); \
 } while (0)
 #define ASSERT_GENERIC_PAUTH_ENABLED() \
 do { \
 	unsigned long hwcaps = getauxval(AT_HWCAP); \
 	/* generic key instructions are not in NOP space. This prevents a SIGILL */ \
-	ASSERT_NE(0, hwcaps & HWCAP_PACG) TH_LOG("Generic PAUTH not enabled"); \
+	if (!(hwcaps & HWCAP_PACG)) \
+		SKIP(return, "Generic PAUTH not enabled");	\
 } while (0)
 
 void sign_specific(struct signatures *sign, size_t val)
@@ -256,7 +258,7 @@ TEST(single_thread_different_keys)
 	unsigned long hwcaps = getauxval(AT_HWCAP);
 
 	/* generic and data key instructions are not in NOP space. This prevents a SIGILL */
-	ASSERT_NE(0, hwcaps & HWCAP_PACA) TH_LOG("PAUTH not enabled");
+	ASSERT_PAUTH_ENABLED();
 	if (!(hwcaps & HWCAP_PACG)) {
 		TH_LOG("WARNING: Generic PAUTH not enabled. Skipping generic key checks");
 		nkeys = NKEYS - 1;
@@ -299,7 +301,7 @@ TEST(exec_changed_keys)
 	unsigned long hwcaps = getauxval(AT_HWCAP);
 
 	/* generic and data key instructions are not in NOP space. This prevents a SIGILL */
-	ASSERT_NE(0, hwcaps & HWCAP_PACA) TH_LOG("PAUTH not enabled");
+	ASSERT_PAUTH_ENABLED();
 	if (!(hwcaps & HWCAP_PACG)) {
 		TH_LOG("WARNING: Generic PAUTH not enabled. Skipping generic key checks");
 		nkeys = NKEYS - 1;
-- 
2.26.2