From patchwork Tue Jan 31 22:56:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13123549 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 44AEEC636D7 for ; Tue, 31 Jan 2023 22:58:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=T9w45EqfAxfag4NK4kabtiyVg95ZxttDDRHVQdQO4eo=; b=CL8IDN0eDE3EU7 lYRBVqQf5Jy5bMqU165k7aC3DA3L8wmeZPMPNj8CVKOzNl/qnau42rJLPX9auST36g9dX5SZ5wrXQ 8togL0zWm80I5uA3rn2DOT/LvYHe0j+efSQPUvRMDolEmkb2h8BNMs7txWl84iujPwzA143Ah+6yp N5MfKf5NcNYv54AibcK2NT0uYl+xs12xzv0iPLnD+3z6oufGhY4QliL53RERPxDbgot97JLSufsxF WRoc53l2VAKygmVo/R+Vbu0n8w53YTNmTpv3qBQBdOJRmoIealbuOWnBnhzAsdyMBwuKY5nTFgx9U 4FDrRCCLxf44tFEE9IDw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pMzYw-009c7I-Fl; Tue, 31 Jan 2023 22:57:14 +0000 Received: from ams.source.kernel.org ([145.40.68.75]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pMzYd-009c0y-Gm for linux-arm-kernel@lists.infradead.org; Tue, 31 Jan 2023 22:56:57 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id B89D2B81D75; Tue, 31 Jan 2023 22:56:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 078A0C4339E; Tue, 31 Jan 2023 22:56:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1675205812; bh=NOhvDhCN7uOA9tKbnAmGofUYUWi9IqtE+mHDLpY5sxE=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=RuphEXQHw9LgnFPPRytT/f65Yayrm8j3/j+lTTvUUCVl67YXytbAv+QtmluTill0u hsvggWfIu2fGOCaaAUqt198yV95o5wLAQV5yiyFA1MjmGD80zp+PztY0P9Ta0NuDvF RyJWEc06C+CPae1MpT99lKugaIWFfVpdDn4ekK2lWO8FLjdHzpnngZCKm/8rlpm/k/ /ms9ZXSYA3na9y/6KLHvWPttIjA4lRH1MACa5AeyOTGKO+9OUz77z9ZWHGNCyLHCH8 ryjCkadV0H9kgSHB6BemictRk5zaKfQH06zVVDwdhQuFLgUt+NxT7OWw0J1bzqIiGJ TEU3A+NZmPqZQ== From: Mark Brown Date: Tue, 31 Jan 2023 22:56:34 +0000 Subject: [PATCH 1/2] kselftest/arm64: Fix enumeration of systems without 128 bit SME MIME-Version: 1.0 Message-Id: <20230131-arm64-kselftest-sig-sme-no-128-v1-1-d47c13dc8e1e@kernel.org> References: <20230131-arm64-kselftest-sig-sme-no-128-v1-0-d47c13dc8e1e@kernel.org> In-Reply-To: <20230131-arm64-kselftest-sig-sme-no-128-v1-0-d47c13dc8e1e@kernel.org> To: Catalin Marinas , Will Deacon , Shuah Khan Cc: Shuah Khan , linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, Mark Brown X-Mailer: b4 0.12.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1729; i=broonie@kernel.org; h=from:subject:message-id; bh=NOhvDhCN7uOA9tKbnAmGofUYUWi9IqtE+mHDLpY5sxE=; b=owGbwMvMwMWocq27KDak/QLjabUkhuSbc9b359l+t02fVfE20FF89t5Vt0JXRx5iCjef/HX3Ve77 smtOdzIaszAwcjHIiimyrH2WsSo9XGLr/EfzX8EMYmUCmcLAxSkAE/lfwf6b/YHflNzpfaEPuo2/Cf Npee5qfvKiWfbysrtqBybdsp0cc6GIzWexm2tRlyz/q31Covt9eI4olJW7GGtEB5e+YfuZ8fO6WcUL rqqLEn4V828tiIu98mZu6NrvmfJ/O98pSK8unrHcx1tx3s7ZBULC3uz9ZnIOPZoR7MFfT4eLqa8tt+ uTeaNeusY85OP1LRm3+Gu3XGTtu+Msdoq3MaVMdIHfXo525oKn/u7JRqJWi50tIrNjZnFHbgzQn51Z bLnXz+/5RTU1iU/1H31XvxZhSZop0jd9xUmt2K0P0tZM+hgW37Tr6sNtoocuOcc/k3SZVv8zX3Kumm VGSKyUGEdH5+RFJUWGXB/tu+OCAA== X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230131_145655_878945_F804CA36 X-CRM114-Status: GOOD ( 11.12 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The current signal handling tests for SME do not account for the fact that unlike SVE all SME vector lengths are optional so we can't guarantee that we will encounter the minimum possible VL, they will hang enumerating VLs on such systems. Abort enumeration when we find the lowest VL. Fixes: 4963aeb35a9e ("kselftest/arm64: signal: Add SME signal handling tests") Signed-off-by: Mark Brown --- tools/testing/selftests/arm64/signal/testcases/ssve_regs.c | 4 ++++ tools/testing/selftests/arm64/signal/testcases/za_regs.c | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/tools/testing/selftests/arm64/signal/testcases/ssve_regs.c b/tools/testing/selftests/arm64/signal/testcases/ssve_regs.c index cd738265cdcd..00bbdc9a6269 100644 --- a/tools/testing/selftests/arm64/signal/testcases/ssve_regs.c +++ b/tools/testing/selftests/arm64/signal/testcases/ssve_regs.c @@ -34,6 +34,10 @@ static bool sme_get_vls(struct tdescr *td) vl &= PR_SME_VL_LEN_MASK; + /* Did we find the lowest supported VL? */ + if (vq < sve_vq_from_vl(vl)) + break; + /* Skip missing VLs */ vq = sve_vq_from_vl(vl); diff --git a/tools/testing/selftests/arm64/signal/testcases/za_regs.c b/tools/testing/selftests/arm64/signal/testcases/za_regs.c index ea45acb115d5..174ad6656696 100644 --- a/tools/testing/selftests/arm64/signal/testcases/za_regs.c +++ b/tools/testing/selftests/arm64/signal/testcases/za_regs.c @@ -34,6 +34,10 @@ static bool sme_get_vls(struct tdescr *td) vl &= PR_SME_VL_LEN_MASK; + /* Did we find the lowest supported VL? */ + if (vq < sve_vq_from_vl(vl)) + break; + /* Skip missing VLs */ vq = sve_vq_from_vl(vl); From patchwork Tue Jan 31 22:56:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13123548 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CEF66C38142 for ; Tue, 31 Jan 2023 22:57:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=BHfKRpsCaQfQWpnt3zKpoLwBqjQS2/SiE4pA7CPQ7+w=; b=IfdWTLfsOXQcoI zzSMzsUXb2oNhJDpqXANK8Tu5x0xqhp7nU2bWUnQ9JF+CAlhkeYgPSkQyDS589oQJXa6EQousaJiX CQ4RyXJ3s3Yo5gZqxyQzoivCc+AIQ8WR4IjnCj+BS2s8e7dK/hu9C43N75stfoM0RBBeqvyHLghiE FI9kGYsVsVO/snLUTn19U2ScffnggLc1iFaKL4exADi9DgXi3mXzLflweXCQ4qGUipTTvOPAgrXNg quEakfDxOlPzfBq/ZsE6FX0hhUU5+kP5eLgnpDjr36mX9ISviRptKwifa5haPTqw1cn/7MpJut7ah 6R6dL4oQaGoL1F1VU0NA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pMzYo-009c4y-5H; Tue, 31 Jan 2023 22:57:06 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pMzYd-009c1A-8G for linux-arm-kernel@lists.infradead.org; Tue, 31 Jan 2023 22:56:56 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D65BE616FA; Tue, 31 Jan 2023 22:56:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DC34EC433A0; Tue, 31 Jan 2023 22:56:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1675205814; bh=OtSjI6ErC2KrOpOPD79SOpL8y4H/aKc0tdYvKxcYNe0=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=LgKikaC/U0JusrKWAZEhz8Qxwen9RlEN5dOXrjLIhAZN3sDFE5ROtPVAFt1oURFUV H/qcm7A71pc2fp1gSK9zLiagz47llXuHU1bftqVfIjR7J6nXOTCC81jHWE8FhB6KkN Rz1IcLgzlwq1VyqW8XfvB+LEQPHYQnS/eq36LDh1Y3HeD++0WyjV27m41WiO3fNE/b TN+7KV40STpDoNUSdoOyTFenk/LDRPwqgGOLdP5hxoqpS090w0FyctEu6L3pD5l60w bFGmOfPA/bylAe83wFkprz55LiFo/13Hg/9IZgIgHmZFKwsXZu3qswGojaEeYiVqwG O5Dlj+gw+zrLw== From: Mark Brown Date: Tue, 31 Jan 2023 22:56:35 +0000 Subject: [PATCH 2/2] kselftest/arm64: Fix enumeration of systems without 128 bit SME for SSVE+ZA MIME-Version: 1.0 Message-Id: <20230131-arm64-kselftest-sig-sme-no-128-v1-2-d47c13dc8e1e@kernel.org> References: <20230131-arm64-kselftest-sig-sme-no-128-v1-0-d47c13dc8e1e@kernel.org> In-Reply-To: <20230131-arm64-kselftest-sig-sme-no-128-v1-0-d47c13dc8e1e@kernel.org> To: Catalin Marinas , Will Deacon , Shuah Khan Cc: Shuah Khan , linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, Mark Brown X-Mailer: b4 0.12.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1172; i=broonie@kernel.org; h=from:subject:message-id; bh=OtSjI6ErC2KrOpOPD79SOpL8y4H/aKc0tdYvKxcYNe0=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBj2Zywr31KZLAYLwJ5v6DynGCGVMQoGzElJh0HBMei 3kHgE0yJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCY9mcsAAKCRAk1otyXVSH0OgRB/ 4wtAYPV4wlkbmsVU5P7Hta+FKaTfj/MgzI6/3uUNLvJGk6O5gZn2Yd39pV6pJulll5EkqUQDgQI/bw xNQ+eBAXy/8UdueD7o4OcJkcWSw0lPTTT0w/XeRAyuotcJiH4CFuL33VFP+mXQwS/YAQzziLT3tnMt RslNf/3oOPftLUv0YS9x1WRqeGiaEf0wv8Yfxw0K1Goclhbxb2N3EAyEk1gMZOxGUxaa+nU7KdzqN8 uyBB3J9RSqT5a/WF7jef6C2Qbmfdq0AtvBnWEux2SZ2FQavLA3qUkIJPQA+DFR/iNLfnJ7ASPnKLQd jz4MwsFkuGTcs2agK80cizz7SkTKTu X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230131_145655_379109_AEBB8D1E X-CRM114-Status: GOOD ( 11.50 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The current signal handling tests for SME do not account for the fact that unlike SVE all SME vector lengths are optional so we can't guarantee that we will encounter the minimum possible VL, they will hang enumerating VLs on such systems. Abort enumeration when we find the lowest VL in the newly added ssve_za_regs test. Fixes: bc69da5ff087 ("kselftest/arm64: Verify simultaneous SSVE and ZA context generation") Signed-off-by: Mark Brown --- tools/testing/selftests/arm64/signal/testcases/ssve_za_regs.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/testing/selftests/arm64/signal/testcases/ssve_za_regs.c b/tools/testing/selftests/arm64/signal/testcases/ssve_za_regs.c index 954a21f6121a..1f62621794d5 100644 --- a/tools/testing/selftests/arm64/signal/testcases/ssve_za_regs.c +++ b/tools/testing/selftests/arm64/signal/testcases/ssve_za_regs.c @@ -34,6 +34,10 @@ static bool sme_get_vls(struct tdescr *td) vl &= PR_SME_VL_LEN_MASK; + /* Did we find the lowest supported VL? */ + if (vq < sve_vq_from_vl(vl)) + break; + /* Skip missing VLs */ vq = sve_vq_from_vl(vl);