Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Mark Brown <broonie@kernel.org>
Date:   Fri, 20 Jan 2023 12:04:08 +0000
Subject: [PATCH 1/2] kselftest/arm64: Verify that SSVE signal context has
 SVE_SIG_FLAG_SM set
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Message-Id: <20230117-arm64-test-ssve-za-v1-1-203c00150154@kernel.org>
References: <20230117-arm64-test-ssve-za-v1-0-203c00150154@kernel.org>
In-Reply-To: <20230117-arm64-test-ssve-za-v1-0-203c00150154@kernel.org>
To:     Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>, Shuah Khan <shuah@kernel.org>
Cc:     linux-arm-kernel@lists.infradead.org,
        linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org,
        Mark Brown <broonie@kernel.org>
Precedence: bulk

Streaming mode SVE signal context should have SVE_SIG_FLAG_SM set but we
were not actually validating this. Add a check.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
 tools/testing/selftests/arm64/signal/testcases/ssve_regs.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/testing/selftests/arm64/signal/testcases/ssve_regs.c b/tools/testing/selftests/arm64/signal/testcases/ssve_regs.c
index d0a178945b1a..cd738265cdcd 100644
--- a/tools/testing/selftests/arm64/signal/testcases/ssve_regs.c
+++ b/tools/testing/selftests/arm64/signal/testcases/ssve_regs.c
@@ -92,6 +92,11 @@ static int do_one_sme_vl(struct tdescr *td, siginfo_t *si, ucontext_t *uc,
 		return 1;
 	}
 
+	if (!(ssve->flags & SVE_SIG_FLAG_SM)) {
+		fprintf(stderr, "SVE_SIG_FLAG_SM not set in SVE record\n");
+		return 1;
+	}
+
 	/* The actual size validation is done in get_current_context() */
 	fprintf(stderr, "Got expected size %u and VL %d\n",
 		head->size, ssve->vl);

-- 
2.34.1