From: Cristian Marussi <cristian.marussi@arm.com>
To: linux-kselftest@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, shuah@kernel.org
Cc: dave.martin@arm.com, andreyknvl@google.com
Subject: [PATCH 08/13] kselftest: arm64: mangle_pstate_ssbs_regs
Date: Thu, 13 Jun 2019 12:13:30 +0100 [thread overview]
Message-ID: <20190613111335.7645-9-cristian.marussi@arm.com> (raw)
In-Reply-To: <20190613111335.7645-1-cristian.marussi@arm.com>
Added a simple mangle testcase which messes with the ucontext_t
from within the sig_handler, trying to toggle PSTATE SSBS bit.
Expect SIGILL if SSBS feature unsupported or that the value set in
PSTATE.SSBS is preserved on test PASS.
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
---
.../arm64/signal/testcases/.gitignore | 1 +
.../testcases/mangle_pstate_ssbs_regs.c | 41 +++++++++++++++++++
2 files changed, 42 insertions(+)
create mode 100644 tools/testing/selftests/arm64/signal/testcases/mangle_pstate_ssbs_regs.c
diff --git a/tools/testing/selftests/arm64/signal/testcases/.gitignore b/tools/testing/selftests/arm64/signal/testcases/.gitignore
index e7a1d998b650..c2972c3f33ca 100644
--- a/tools/testing/selftests/arm64/signal/testcases/.gitignore
+++ b/tools/testing/selftests/arm64/signal/testcases/.gitignore
@@ -5,3 +5,4 @@ mangle_pstate_invalid_state_toggle
mangle_pstate_invalid_mode_el1
mangle_pstate_invalid_mode_el2
mangle_pstate_invalid_mode_el3
+mangle_pstate_ssbs_regs
diff --git a/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_ssbs_regs.c b/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_ssbs_regs.c
new file mode 100644
index 000000000000..d997ebf742d9
--- /dev/null
+++ b/tools/testing/selftests/arm64/signal/testcases/mangle_pstate_ssbs_regs.c
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2019 ARM Limited */
+
+#include "test_signals_utils.h"
+#include "testcases.h"
+
+static int mangle_invalid_pstate_ssbs_run(struct tdescr *td,
+ siginfo_t *si, ucontext_t *uc)
+{
+ ASSERT_GOOD_CONTEXT(uc);
+
+ /* toggle bit value */
+ uc->uc_mcontext.pstate ^= PSR_SSBS_BIT;
+ /* Save after mangling...it should be preserved */
+ td->saved_uc = *uc;
+
+ return 1;
+}
+
+static int pstate_ssbs_bit_checks(struct tdescr *td)
+{
+ uint64_t val = 0;
+
+ get_regval(MRS_SSBS_SYSREG, val);
+ /* pass when preserved */
+ td->pass = (!!(val & MRS_SSBS_BIT) ==
+ !!(td->saved_uc.uc_mcontext.pstate & PSR_SSBS_BIT));
+
+ return 1;
+}
+
+struct tdescr tde = {
+ .sanity_disabled = true,
+ .name = "MANGLE_PSTATE_SSBS_REGS",
+ .descr = "Mangling uc_mcontext changing SSBS.(PRESERVE)",
+ .feats_required = FEAT_SSBS,
+ .sig_trig = SIGUSR1,
+ .sig_unsupp = SIGILL,
+ .run = mangle_invalid_pstate_ssbs_run,
+ .check_result = pstate_ssbs_bit_checks,
+};
--
2.17.1
next prev parent reply other threads:[~2019-06-13 15:30 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-13 11:13 [PATCH 00/13] Add arm64/signal initial kselftest support Cristian Marussi
2019-06-13 11:13 ` [PATCH 01/13] kselftest: arm64: introduce new boilerplate code Cristian Marussi
2019-06-21 10:34 ` Dave Martin
2019-06-13 11:13 ` [PATCH 02/13] kselftest: arm64: adds arm64/signal support code Cristian Marussi
2019-06-21 10:35 ` Dave Martin
2019-06-28 18:53 ` Cristian Marussi
2019-06-13 11:13 ` [PATCH 03/13] kselftest: arm64: mangle_sp_misaligned Cristian Marussi
2019-06-21 10:35 ` Dave Martin
2019-07-02 15:39 ` Cristian Marussi
2019-07-03 8:39 ` Dave P Martin
2019-06-13 11:13 ` [PATCH 04/13] kselftest: arm64: mangle_pc_invalid Cristian Marussi
2019-06-21 10:35 ` Dave Martin
2019-06-13 11:13 ` [PATCH 05/13] kselftest: arm64: mangle_pstate_invalid_daif_bits Cristian Marussi
2019-06-21 10:35 ` Dave Martin
2019-06-13 11:13 ` [PATCH 06/13] kselftest: arm64: mangle_pstate_invalid_state_toggle Cristian Marussi
2019-06-21 10:35 ` Dave Martin
2019-06-13 11:13 ` [PATCH 07/13] kselftest: arm64: mangle_pstate_invalid_mode_el? Cristian Marussi
2019-06-21 10:35 ` Dave Martin
2019-06-13 11:13 ` Cristian Marussi [this message]
2019-06-21 10:35 ` [PATCH 08/13] kselftest: arm64: mangle_pstate_ssbs_regs Dave Martin
2019-07-02 15:51 ` Cristian Marussi
2019-07-03 8:56 ` Dave Martin
2019-06-13 11:13 ` [PATCH 09/13] kselftest: arm64: fake_sigreturn_misaligned Cristian Marussi
2019-06-21 10:36 ` Dave Martin
2019-06-13 11:13 ` [PATCH 10/13] kselftest: arm64: fake_sigreturn_bad_magic Cristian Marussi
2019-06-21 10:36 ` Dave Martin
2019-07-03 17:41 ` Cristian Marussi
2019-06-13 11:13 ` [PATCH 11/13] kselftest: arm64: fake_sigreturn_bad_size Cristian Marussi
2019-06-21 10:36 ` Dave Martin
2019-07-03 17:46 ` Cristian Marussi
2019-06-13 11:13 ` [PATCH 12/13] kselftest: arm64: fake_sigreturn_bad_size_for_magic0 Cristian Marussi
2019-06-21 10:36 ` Dave Martin
2019-07-03 17:50 ` Cristian Marussi
2019-06-13 11:13 ` [PATCH 13/13] kselftest: arm64: fake_sigreturn_overflow_reserved Cristian Marussi
2019-06-21 10:36 ` Dave Martin
2019-07-03 17:51 ` Cristian Marussi
2019-06-21 10:34 ` [PATCH 00/13] Add arm64/signal initial kselftest support Dave Martin
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