From patchwork Tue Jun 25 14:57:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13711524 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 55997C2BBCA for ; Tue, 25 Jun 2024 15:09:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: 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=ZqpnWAig2upYsGaA7ZQk/YP6p/BSNBHtzql0Tt9SXUs=; b=0e3EZn6SWfYr7F OfA7fwG8gPxkfAHpvkl0R90a6lWVd4/jVrNMqBhaqigvAfHhbpyqOA9OLKZvTvx3dN5Em8JI43a6W iDaxgeeYY1RC2Ux4pMrCyZr1R0PUkIzLLI/rcPss9jO389Fb9+iEVCDZ+ikLmF6gNUOvrp4LaZE2T UeUxPaHYVzQkMTMmLEh2Wt1HzvbQzpONPBxBuS35lJaiO36+il/1vEcPCtpWW4O5u6M1E3ISpRhx5 GDVVeC7FBoR0ThWo9ZsBWRlHIK1BerjQX2DmKE2mKLSohAECK0qC8nMDiDZjzqV6AHKCzQ3Kw2TBd ilKZ/FQ7Pr4/oz81lvsg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sM7n7-00000003PPq-2JJO; Tue, 25 Jun 2024 15:09:05 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sM7i7-00000003Led-0g2r; Tue, 25 Jun 2024 15:03:56 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 7380660BAF; Tue, 25 Jun 2024 15:03:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3D40BC4AF0B; Tue, 25 Jun 2024 15:03:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1719327834; bh=oHs0edHK2ZH//P9wlXUiorha791DOO+hA3lq1vKIHRU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=RVcHIs3e0+1BTODXPOdXj48xTE6Ig2X77qbNnTIQRIsQ1F/J+hGQH3DoCpTsV74KQ LP4Qq7EwvxhXEaHHjIjrYyUvTxzK77ehOh//lQv8X7OkWgdjstOMorkAbbx+KHNX8q ROWqziyU952y0sO0yHkuO3MMdFFLczKsxuLA84f3p5kl05IXBvb14Owt3bAZqhg5ca dmGd1AnNLQrvvSqMYd/hpvNjgpq3P6QwCOEIgl3e5F7U6Sgudc33b1GrSWb3pdJmGz I2NzxVo+oIdHLb9gxBTnyjAvtRXZA9Ft3ss+7ArRfSNZRQDRf0jpb8Y1uP2KVUxvDI epU+0l3m7Vx5w== From: Mark Brown Date: Tue, 25 Jun 2024 15:57:55 +0100 Subject: [PATCH v9 27/39] kselftest/arm64: Verify the GCS hwcap MIME-Version: 1.0 Message-Id: <20240625-arm64-gcs-v9-27-0f634469b8f0@kernel.org> References: <20240625-arm64-gcs-v9-0-0f634469b8f0@kernel.org> In-Reply-To: <20240625-arm64-gcs-v9-0-0f634469b8f0@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 0.14-dev-d4707 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/pANAwAKASTWi3JdVIfQAcsmYgBmetuHDmIv/1BR7AmyIP7TdZpBb0DyVJraa/k+giyf IMNNkZeJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZnrbhwAKCRAk1otyXVSH0GErB/ 9P0d2K2QWmEiq6MtR98YyQMB73y0NDVSTD0oL7snO1bVGdOgv3ptXZGHFRdCTsQEa39LCg09KHmEfQ uaxKzfCQgFpTtBTQ/V7TBQNmyNgv15eCxTBzb+bcJWTbQ69u7FmV9LUqaXf46j7gsK1RTSQPijNICB 43+McjEr3BipgL91KboTE8OffZ1hik0Lp3s5RXWvYgyHnYuwzaYNfGWKaFHiNm+XhLMBsFUJFBBODe S6XKVjZpD6+x8cR3DNl+jf0H/VUNt9Mv+ekTdgAOwCMdnCWAN9wXJ2khka98U9PvPIJEglltn1BqE3 D5k/13JN4yj/0zmk0jjehdcje46viA 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-20240625_080355_377317_98E3CBBF X-CRM114-Status: GOOD ( 10.66 ) X-BeenThere: linux-riscv@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-riscv" Errors-To: linux-riscv-bounces+linux-riscv=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 --- 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,