From patchwork Tue Oct 1 22:59:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13818952 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7EC3C1D042F; Tue, 1 Oct 2024 23:07:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727824032; cv=none; b=j9QnirCIUupnrtJ8m0tnjFjHKcXlfgTgCn2Tn0afOL+yuOQwOZ8H5Co7TUdbqgxVJj0ji5JKdOhGeGkgHDIAi+82BsAzjHF9muHfRnRAGr/xdMAX9uNtytS4MYL/e8hJiOXrGNn4sdvLxSs3U2lHoXgg1B9Sqez+zkfXLA+TpmE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727824032; c=relaxed/simple; bh=ZVQOrXstPU5gR3A8Ckx0lxDGx6pZ/VSu5l6FgDY2wws=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=RrIn3vp3yT5Q7XSljV93SbmXH+JtvJ+rexbEoq0B4huBbVu8/zf7321aIjIZK7gM7VDQhPGVwBhKjqvwQmaDp1YAWqcKXnZYvdiPuLAfWw0rEtgB2j9t6WrK08TL7LaAPmTmSZRNVCwlmTq4vd0+gXDKeL1PJof5IHG6MZdsPSA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=pGG18lc2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="pGG18lc2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 079AFC4CED1; Tue, 1 Oct 2024 23:07:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1727824032; bh=ZVQOrXstPU5gR3A8Ckx0lxDGx6pZ/VSu5l6FgDY2wws=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=pGG18lc2vPv29gIqkMAgxe+tMLf+4YOSLTVwbD/QjeQ+DvjTcSnhA7jJROEaXnoqZ Sk7q9z9Ik6EYvQw8wHgkFpjni48cdseqWXNSDA3ME5Y4jiMtNIFbXFi/Q4Y6Qx9DwF CjbEr1Q9cpzsDu2LAVgTT9fQjiQWKTngRmKBXEN7BSy7+OVyloW50UqBsYSAQgLQzI dfLXYIT6H9J9EGSKdxsCiJYQYuaK6ZHNrAAHm9yKovSUDtANbzIELnFp7jRx4qdDNO t/OM6qvVSZzaXHRKgKE3J05TO1D0sCqUjuUxevCHFlz6IcybO63cbV6unXyWRUYs81 /uCRBTD6TpHcQ== From: Mark Brown Date: Tue, 01 Oct 2024 23:59:18 +0100 Subject: [PATCH v13 39/40] kselftest/arm64: Enable GCS for the FP stress tests Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241001-arm64-gcs-v13-39-222b78d87eee@kernel.org> References: <20241001-arm64-gcs-v13-0-222b78d87eee@kernel.org> In-Reply-To: <20241001-arm64-gcs-v13-0-222b78d87eee@kernel.org> To: Catalin Marinas , Will Deacon , Jonathan Corbet , Andrew Morton , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Arnd Bergmann , Oleg Nesterov , Eric Biederman , Shuah Khan , "Rick P. Edgecombe" , Deepak Gupta , Ard Biesheuvel , Szabolcs Nagy , Kees Cook Cc: "H.J. Lu" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Florian Weimer , Christian Brauner , Thiago Jung Bauermann , Ross Burton , David Spickett , Yury Khrustalev , Wilco Dijkstra , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, kvmarm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Mark Brown X-Mailer: b4 0.15-dev-99b12 X-Developer-Signature: v=1; a=openpgp-sha256; l=3215; i=broonie@kernel.org; h=from:subject:message-id; bh=ZVQOrXstPU5gR3A8Ckx0lxDGx6pZ/VSu5l6FgDY2wws=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBm/H7irfZPEvRvl3o5vpBr8BsBVzwq7I5CnEYGxfwZ gyf+MGWJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZvx+4gAKCRAk1otyXVSH0DS3B/ 96I6K/hdbGr5DSrgzJPe0+7XKencBMwk/ceJm2y031cJaJPViPOQuTZAendfczyGkbAaZt9UeDVPAO gCkbqR4XLO9PBxjo5YScfTmU9r99+zSj+zwQC5ucr66eT1x77VygKzJd8j2rR1NQZy3HquSDHylyJC ESOMtP6qcQKwhdA09cJ8P0dj/L95TlsXTza8OyudflyIIVmrrmpDc09CU+GCTAfUusoUv9E42T4DBi TW0WXck2w1AHyKmsaRL0eCusUSj9mjvtBiInM5ZzFL6Li07LZB1ECqhlt4eYMKED4AvXPIrM4w5bqY Sud8jJ/dLx7hEM40eyum2Ok+hHChEA X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB While it's a bit off topic for them the floating point stress tests do give us some coverage of context thrashing cases, and also of active signal delivery separate to the relatively complicated framework in the actual signals tests. Have the tests enable GCS on startup, ignoring failures so they continue to work as before on systems without GCS. Reviewed-by: Thiago Jung Bauermann Tested-by: Thiago Jung Bauermann Signed-off-by: Mark Brown --- tools/testing/selftests/arm64/fp/assembler.h | 15 +++++++++++++++ tools/testing/selftests/arm64/fp/fpsimd-test.S | 2 ++ tools/testing/selftests/arm64/fp/sve-test.S | 2 ++ tools/testing/selftests/arm64/fp/za-test.S | 2 ++ tools/testing/selftests/arm64/fp/zt-test.S | 2 ++ 5 files changed, 23 insertions(+) diff --git a/tools/testing/selftests/arm64/fp/assembler.h b/tools/testing/selftests/arm64/fp/assembler.h index 9b38a0da407d..1fc46a5642c2 100644 --- a/tools/testing/selftests/arm64/fp/assembler.h +++ b/tools/testing/selftests/arm64/fp/assembler.h @@ -65,4 +65,19 @@ endfunction bl puts .endm +#define PR_SET_SHADOW_STACK_STATUS 75 +# define PR_SHADOW_STACK_ENABLE (1UL << 0) + +.macro enable_gcs + // Run with GCS + mov x0, PR_SET_SHADOW_STACK_STATUS + mov x1, PR_SHADOW_STACK_ENABLE + mov x2, xzr + mov x3, xzr + mov x4, xzr + mov x5, xzr + mov x8, #__NR_prctl + svc #0 +.endm + #endif /* ! ASSEMBLER_H */ diff --git a/tools/testing/selftests/arm64/fp/fpsimd-test.S b/tools/testing/selftests/arm64/fp/fpsimd-test.S index 8b960d01ed2e..b16fb7f42e3e 100644 --- a/tools/testing/selftests/arm64/fp/fpsimd-test.S +++ b/tools/testing/selftests/arm64/fp/fpsimd-test.S @@ -215,6 +215,8 @@ endfunction // Main program entry point .globl _start function _start + enable_gcs + mov x23, #0 // signal count mov w0, #SIGINT diff --git a/tools/testing/selftests/arm64/fp/sve-test.S b/tools/testing/selftests/arm64/fp/sve-test.S index fff60e2a25ad..2fb4f0b84476 100644 --- a/tools/testing/selftests/arm64/fp/sve-test.S +++ b/tools/testing/selftests/arm64/fp/sve-test.S @@ -378,6 +378,8 @@ endfunction // Main program entry point .globl _start function _start + enable_gcs + mov x23, #0 // Irritation signal count mov w0, #SIGINT diff --git a/tools/testing/selftests/arm64/fp/za-test.S b/tools/testing/selftests/arm64/fp/za-test.S index 095b45531640..b2603aba99de 100644 --- a/tools/testing/selftests/arm64/fp/za-test.S +++ b/tools/testing/selftests/arm64/fp/za-test.S @@ -231,6 +231,8 @@ endfunction // Main program entry point .globl _start function _start + enable_gcs + mov x23, #0 // signal count mov w0, #SIGINT diff --git a/tools/testing/selftests/arm64/fp/zt-test.S b/tools/testing/selftests/arm64/fp/zt-test.S index b5c81e81a379..8d9609a49008 100644 --- a/tools/testing/selftests/arm64/fp/zt-test.S +++ b/tools/testing/selftests/arm64/fp/zt-test.S @@ -200,6 +200,8 @@ endfunction // Main program entry point .globl _start function _start + enable_gcs + mov x23, #0 // signal count mov w0, #SIGINT