From patchwork Wed Aug 28 23:27:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13782258 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 80AA3C7114C for ; Wed, 28 Aug 2024 23:52:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type: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=aS4lN8Lf7oKQdpx1+79LO2SK6e/x1FgNnxnRAeW0uao=; b=VeEdFtp5zUQiZnzSOPpHBtdIDq ZwwX/eLFBXl/XQKV89sEklFGDx5vzSpYU7tVFWbjzC1ogH5QPA9HcqmpwxfFAoqGnob0uRmlLxU9c yllTw6arwm8VTcfEMDDoDHVqhjNLggoSHqyiTaaVVjLXsuxijivOt3BfZQiaYSq1V61KSxryHdGW8 dTH4qa3fiKrsfz9tHOwd3eDRivrZrkXWIn7glpdW4KI6AguGjdP9w90EK1gt9L7mms7EgBKwhVCGR 2AVFezodC90UtFdmauoEby9zd665Ars/oFaB5FffEM0Opng3QES7Lo7DkiSmC1DtapDUx5xo5vMDz cHzXL1kg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sjSSH-0000000HUow-3zwe; Wed, 28 Aug 2024 23:52:01 +0000 Received: from nyc.source.kernel.org ([147.75.193.91]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sjS8t-0000000HNIO-3Xph; Wed, 28 Aug 2024 23:32:01 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 228D6A4373D; Wed, 28 Aug 2024 23:31:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0B375C4CEC7; Wed, 28 Aug 2024 23:31:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1724887918; bh=aFW2qvTAUk71Nq29FR7iqobh+ecvMgae9gmrzv39Zig=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=hjwu1NOIEmtm8Z7u72gZ6JHpkwB5gkUJwalodRKF8NUXnKJGIEb0zJUYn0XqEtVsK 6eir07YTJAN930R0rS8oXPsf6PMfQ9EfkaAWQ1dRKOa5wXBUnNDnZaVRhFcZay/PDH o/emvel+ObwFHeJv5S51ipjvW8LPa1xdsI+eywNUXvOC5+9MncYTnDzs8Uteg4EfVc yuQM05fKSpjDRx9hshHQz8ztRMRG76+LOxIH3PymqWyy4gwdHZESoB/tcfmV/26lB+ qTA10jQeMNmWKfhwrB7LyxLXvrqayRjUqWp7rT//nr67E8BdqSESxF6eyGyVLa88li voHyn7VgIlVTQ== From: Mark Brown Date: Thu, 29 Aug 2024 00:27:44 +0100 Subject: [PATCH v12 28/39] kselftest/arm64: Verify the GCS hwcap MIME-Version: 1.0 Message-Id: <20240829-arm64-gcs-v12-28-42fec947436a@kernel.org> References: <20240829-arm64-gcs-v12-0-42fec947436a@kernel.org> In-Reply-To: <20240829-arm64-gcs-v12-0-42fec947436a@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 , 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-37811 X-Developer-Signature: v=1; a=openpgp-sha256; l=1352; i=broonie@kernel.org; h=from:subject:message-id; bh=aFW2qvTAUk71Nq29FR7iqobh+ecvMgae9gmrzv39Zig=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBmz7KOSj/YT5ssZcKeVNxIRh75CfX+1/LJGwnNPsEb KfxmaQmJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZs+yjgAKCRAk1otyXVSH0AjAB/ 9IIDCOoIAD9cFmgd31fBocKw1sDdzChCEINlCN4R0b5mrluwuKvPLbgBxP96AyAIXdOfycNgOfzLkX sEBtTYbGIRb/4+k5PT5XV+8RvrJUQOYR/upipwFuP5naV3G16qy+an11n090xuLfuaBy8W/ImD5z82 ZIIS8iof/mQ8HEOGmIyMAz+DDNpZbIl40V+PgO8ZXNOHJjj6kCUomP4kQhbcfb/AvtUtOuo5tBYbxs 4Wr4Lb7KhW/WNKTnUD3EBFmzIQj/TGOJTSMEw0BUVChYxdHRy+U0lpcFUxuRK30pAxHy3X06v1Pnm/ Gmna9QTiGgP9kprUoXL7dL1XvDBs1s 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-20240828_163200_063271_12BD69CB X-CRM114-Status: GOOD ( 10.84 ) 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 Add coverage of the GCS hwcap to the hwcap selftest, using a read of GCSPR_EL0 to generate SIGILL without having to worry about enabling GCS. Reviewed-by: Thiago Jung Bauermann Tested-by: Thiago Jung Bauermann Signed-off-by: Mark Brown --- tools/testing/selftests/arm64/abi/hwcap.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c index d8909b2b535a..dc54ae894fe5 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -98,6 +98,17 @@ static void fpmr_sigill(void) asm volatile("mrs x0, S3_3_C4_C4_2" : : : "x0"); } +static void gcs_sigill(void) +{ + unsigned long *gcspr; + + asm volatile( + "mrs %0, S3_3_C2_C5_1" + : "=r" (gcspr) + : + : "cc"); +} + static void ilrcpc_sigill(void) { /* LDAPUR W0, [SP, #8] */ @@ -528,6 +539,14 @@ static const struct hwcap_data { .sigill_fn = fpmr_sigill, .sigill_reliable = true, }, + { + .name = "GCS", + .at_hwcap = AT_HWCAP2, + .hwcap_bit = HWCAP2_GCS, + .cpuinfo = "gcs", + .sigill_fn = gcs_sigill, + .sigill_reliable = true, + }, { .name = "JSCVT", .at_hwcap = AT_HWCAP,