From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Mark Brown <broonie@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Sasha Levin <sashal@kernel.org>,
will@kernel.org, shuah@kernel.org, mark.rutland@arm.com,
thiago.bauermann@linaro.org,
linux-arm-kernel@lists.infradead.org,
linux-kselftest@vger.kernel.org
Subject: [PATCH AUTOSEL 5.15 5/6] kselftest/arm64: Corrupt P0 in the irritator when testing SSVE
Date: Sun, 24 Nov 2024 07:41:41 -0500 [thread overview]
Message-ID: <20241124124149.3336868-5-sashal@kernel.org> (raw)
In-Reply-To: <20241124124149.3336868-1-sashal@kernel.org>
From: Mark Brown <broonie@kernel.org>
[ Upstream commit 3e360ef0c0a1fb6ce9a302e40b8057c41ba8a9d2 ]
When building for streaming SVE the irritator for SVE skips updates of both
P0 and FFR. While FFR is skipped since it might not be present there is no
reason to skip corrupting P0 so switch to an instruction valid in streaming
mode and move the ifdef.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241107-arm64-fp-stress-irritator-v2-3-c4b9622e36ee@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/selftests/arm64/fp/sve-test.S | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/arm64/fp/sve-test.S b/tools/testing/selftests/arm64/fp/sve-test.S
index e3e08d9c7020e..f631d17c899d2 100644
--- a/tools/testing/selftests/arm64/fp/sve-test.S
+++ b/tools/testing/selftests/arm64/fp/sve-test.S
@@ -459,7 +459,8 @@ function irritator_handler
movi v9.16b, #2
movi v31.8b, #3
// And P0
- rdffr p0.b
+ ptrue p0.d
+#ifndef SSVE
// And FFR
wrffr p15.b
--
2.43.0
next parent reply other threads:[~2024-11-24 12:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20241124124149.3336868-1-sashal@kernel.org>
2024-11-24 12:41 ` Sasha Levin [this message]
2024-11-24 12:41 ` [PATCH AUTOSEL 5.15 6/6] kselftest/arm64: Don't leak pipe fds in pac.exec_sign_all() Sasha Levin
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