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kselftest/arm64: pac: Fix skipping of tests on systems without PAC

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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>
This commit is contained in:
Mark Brown 2021-08-19 17:57:23 +01:00 committed by Catalin Marinas
parent 83e5dcbece
commit 0c69bd2ca6
1 changed files with 6 additions and 4 deletions
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10
tools/testing/selftests/arm64/pauth/pac.c
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@ -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;