From nobody Sun Dec 28 19:33:41 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 84184C4167B for ; Tue, 5 Dec 2023 14:24:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346829AbjLEOYq (ORCPT ); Tue, 5 Dec 2023 09:24:46 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37160 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346745AbjLEOYp (ORCPT ); Tue, 5 Dec 2023 09:24:45 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8801EA1 for ; Tue, 5 Dec 2023 06:24:51 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B3623C433C8; Tue, 5 Dec 2023 14:24:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1701786291; bh=jSFY6ngQogrJiHDWxQDhDnPQplkFw+RxN+tqq7rkIuo=; h=From:Date:Subject:To:Cc:From; b=ObTgFDce5CvhMAMYEA6xBNyyNpWqZoRQQHEafkBJcRAImxgmUw6JapCLHVe0/KPIA ivH3Rr68X6GB0oRlwU0FVxjxLugOzNweBspkXo6VagoGzOGKK8YHtrOx53pxXI1dMI RAwh9wFtW6VuYwyMUAA+qgxUxdk9DUcVVAkVvUlPFUPH17ABOaHqEdahnVgu55CZnP pJwha/E2rKEiEZH8+Xy0dKYfBl3Y9BGG7bI3wHRSHCd2+6zpnxOCXCPioWVbWF5fjn UsdeVC4qz0hCDAUQz5TkLJpWeJKzf2g/A1N61ztFnulc5sFXDkgGH5MFejFFRlsohL tlV2zqXFkuFlw== From: Mark Brown Date: Tue, 05 Dec 2023 14:24:44 +0000 Subject: [PATCH] kselftest/arm64: Log SVCR when the SME tests barf MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20231205-arm64-kselftest-log-svcr-v1-1-b77abd9ee7f3@kernel.org> X-B4-Tracking: v=1; b=H4sIAKwyb2UC/x3MOQqAQAxA0atIagMzcQOvIhaDRg2uJCKCeHcHy 1f8/4CxChvUyQPKl5jsW4RPE+imsI2M0kcDOco8uRyDrmWOs/EynGwnLvuIdnWKWUWBvCvIBYa YH8qD3P+6ad/3A78DbpBqAAAA To: Catalin Marinas , Will Deacon , Shuah Khan Cc: linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Mark Brown X-Mailer: b4 0.13-dev-5c066 X-Developer-Signature: v=1; a=openpgp-sha256; l=2579; i=broonie@kernel.org; h=from:subject:message-id; bh=jSFY6ngQogrJiHDWxQDhDnPQplkFw+RxN+tqq7rkIuo=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBlbzKw2Ip54YYzvTRn+xfMczlGiTTrq6VEnNtVDHUC 1ipV8PiJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZW8ysAAKCRAk1otyXVSH0L+nB/ 9AEoTq/6l+kDAJJrqW6eA7/Z8Sk3UANVz/z15sCRGFBi646UnGEG9TDE/Q+I4lp6/BUz7uN0+RKSSc XbRlqSzis7IAU6V4xOLsebhtJqF2WSPS4S0l0CMba53T6ZKJfVs01wWXOwf+wGEw4aHmUSnt38mua+ 16fUYtPXp2+JGX+x7YQnEK8pX9L/fYCUbPAC7s6//uFTM1X2l2JlAVopI90qJPcIVwdb56CvaR3y+u ycE3GzoZIuCHAhTaH595OjEQ/HyxssSBSmPScw7HNSIDhXmJ8xvYOd9Yn0LDvFfUFxD8mqv7b9cl4I KXz6xl70OqxV2H58KCtNqSirp6O+iY X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On failure we log the actual and expected value of the register we detect a mismatch in. For SME one obvious potential source of corruption would be if we had corrupted SVCR since changes in streaming mode will reset the register values, log the value to aid in understanding issues. Signed-off-by: Mark Brown --- tools/testing/selftests/arm64/fp/sve-test.S | 10 ++++++++++ tools/testing/selftests/arm64/fp/za-test.S | 6 ++++++ tools/testing/selftests/arm64/fp/zt-test.S | 5 +++++ 3 files changed, 21 insertions(+) diff --git a/tools/testing/selftests/arm64/fp/sve-test.S b/tools/testing/se= lftests/arm64/fp/sve-test.S index 547d077e3517..fff60e2a25ad 100644 --- a/tools/testing/selftests/arm64/fp/sve-test.S +++ b/tools/testing/selftests/arm64/fp/sve-test.S @@ -515,6 +515,10 @@ function barf mov x11, x1 // actual data mov x12, x2 // data size =20 +#ifdef SSVE + mrs x13, S3_3_C4_C2_2 +#endif + puts "Mismatch: PID=3D" mov x0, x20 bl putdec @@ -534,6 +538,12 @@ function barf bl dumphex puts "]\n" =20 +#ifdef SSVE + puts "\tSVCR: " + mov x0, x13 + bl putdecn +#endif + mov x8, #__NR_getpid svc #0 // fpsimd.c acitivty log dump hack diff --git a/tools/testing/selftests/arm64/fp/za-test.S b/tools/testing/sel= ftests/arm64/fp/za-test.S index 9dcd70911397..095b45531640 100644 --- a/tools/testing/selftests/arm64/fp/za-test.S +++ b/tools/testing/selftests/arm64/fp/za-test.S @@ -333,6 +333,9 @@ function barf // mov w8, #__NR_exit // svc #0 // end hack + + mrs x13, S3_3_C4_C2_2 + smstop mov x10, x0 // expected data mov x11, x1 // actual data @@ -356,6 +359,9 @@ function barf mov x1, x12 bl dumphex puts "]\n" + puts "\tSVCR: " + mov x0, x13 + bl putdecn =20 mov x8, #__NR_getpid svc #0 diff --git a/tools/testing/selftests/arm64/fp/zt-test.S b/tools/testing/sel= ftests/arm64/fp/zt-test.S index d63286397638..b5c81e81a379 100644 --- a/tools/testing/selftests/arm64/fp/zt-test.S +++ b/tools/testing/selftests/arm64/fp/zt-test.S @@ -267,6 +267,8 @@ function barf // mov w8, #__NR_exit // svc #0 // end hack + + mrs x13, S3_3_C4_C2_2 smstop mov x10, x0 // expected data mov x11, x1 // actual data @@ -287,6 +289,9 @@ function barf mov x1, x12 bl dumphex puts "]\n" + puts "\tSVCR: " + mov x0, x13 + bl putdecn =20 mov x8, #__NR_getpid svc #0 --- base-commit: 2cc14f52aeb78ce3f29677c2de1f06c0e91471ab change-id: 20231204-arm64-kselftest-log-svcr-372a210520ae Best regards, --=20 Mark Brown