From patchwork Thu Aug 1 12:06:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13750493 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 D7901C3DA4A for ; Thu, 1 Aug 2024 13:13:26 +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=lx1e4QZxBbCVWVB0QayIR7s4g0rsUX9FuY+HasyH2g8=; b=mse3o7xNpuvdSVIZMFC/DwwAnp 1RNhxjqco7DHly8LVxw3VGDAsKY7PXfunOwoi6QOlFdBYG82murtEknMkjwCdQJzIw3X6LcqSvIqS Zl/5+cGv4ZQRtUz3DOJBIeuLoz0tsHjHcTcBRZCXXwU0bTKFs9vvu/FL+/Aasa0IBDnx9OL96QcJF ni+n6VzJUHc8gQTYLPNAvgNxqjNUVwexAOsAohKqvBhdSYfYhFwRg3+othbtccj/QmvgxS2hc2qvS xjJ/XoHMldZ3GGoLbWJ6cFsnoEntRwGXBu54+k1zOikdDu1+IhVj2l2a7j4FJUJfuLoM81W7LJRu1 1RdiMrcg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sZVcM-00000005Qou-0cTA; Thu, 01 Aug 2024 13:13:18 +0000 Received: from sin.source.kernel.org ([2604:1380:40e1:4800::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sZVQ0-00000005JhD-1Nlw; Thu, 01 Aug 2024 13:00:34 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 9700ACE19AC; Thu, 1 Aug 2024 13:00:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E2541C4AF14; Thu, 1 Aug 2024 13:00:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722517229; bh=oHs0edHK2ZH//P9wlXUiorha791DOO+hA3lq1vKIHRU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=tnrq9/qlz5GnEEEFFRetjGPSOWedcxCUE1yGkiFYjdws0U4itg41NBfsVY86Lvk6s X+IpjSv62kIwlCfYN7eFvhz2sW+UwETmWdFlmMGMFBidDKWrg0ZHqgdbRt2HYW3gQn MG0H6C/C54Id6g9ZGXA/pI+OHLR78Pd+3YU2MnbvW5YX/lYP8SuwmT0Nc9rNUHMH8J QQOUeJTOom0yMSM3cBtJB4pqkkaZuDFclam5qISOmDOEzSnDQHeIdlYsrj37iRvIV/ 3S0HHqq5YrZzkG0PsWgDt1Bg9UNBEFSgAE3wRUe8TprSjqCD4zoYzazrxW12lBGKYr x3cLNAUNqLeaw== From: Mark Brown Date: Thu, 01 Aug 2024 13:06:54 +0100 Subject: [PATCH v10 27/40] kselftest/arm64: Verify the GCS hwcap MIME-Version: 1.0 Message-Id: <20240801-arm64-gcs-v10-27-699e2bd2190b@kernel.org> References: <20240801-arm64-gcs-v10-0-699e2bd2190b@kernel.org> In-Reply-To: <20240801-arm64-gcs-v10-0-699e2bd2190b@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 , 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=1288; i=broonie@kernel.org; h=from:subject:message-id; bh=oHs0edHK2ZH//P9wlXUiorha791DOO+hA3lq1vKIHRU=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBmq4YaR7eUIgxap135hy7ONIfzK5DCkSb7UQJMKMtp D592qJmJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZquGGgAKCRAk1otyXVSH0ElPB/ 9ZXbE8s9vC+GQ95xVWW0x7DnbqqIxaDtNFUU54+Bf2g/sdyJFD0Kv9WAVrRQ0V5fpTxUrG23xXlFEF J1/nVz4ngvN+k2sXHHFlopJP23BUioBPLP2iyFvBtipYkXYxoDtbDG/SdYZipAfT+j+XnW+A9umF4l HNyylEPIp+P/zoxBJ1R1j0+MPSQH1BAW3YC4I6It2Qij0MQL36gOOXr9/HmD/+89eFIdD45LPvQv1V ms1MF+qnajf1TQk3xpz5BTikAATCVwNJTZ9+Y1zsa54sW3wPp3OAnksvOzBDEsuUtusvS52+wgxyen dp/nWQzMiCu0D823CItebJZbVulSjq 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-20240801_060032_763989_3748750F X-CRM114-Status: GOOD ( 11.24 ) 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 Signed-off-by: Mark Brown Tested-by: Thiago Jung Bauermann --- 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,