From patchwork Sat Feb 3 12:25:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13544258 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 2DDD6C48295 for ; Sat, 3 Feb 2024 13:33:48 +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=zzYNGeIxLtgG35scwRKrRV8uZrCjprvCY/LrdvBDKAs=; b=r+YR/1l5YVw8Vc 2C7AqKQnYjskruWiFr1yu+Wvu3JIPiL8Bk3BA0zBK6KcwSvvqODnTrkn7XbddkSC2rHRJlfZmUKBE zUJTkufZTuKKzU92Cq601VVRKGDUVu4jvcqDwdhRFPNz19VQ+ncMRO0A6fNdHB/ZTkXz+msJhvSX5 jnSjnO/3TX63tg782YMNwctPEF0JL+X47DLuZpI+WqiOhfLM3cu9exmY4Qe3Bi+5ArPxTruSnOmJt Sup3Y8rS7Oy4pKK5BPrFcXcAleP4lt9EHhwjJSQhJjpiQTt67rC+CbsgoYJD/hPdH0ey8dPxGAgrn uGHA/VCYLwZsDES7vXeg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rWG9R-0000000GXfW-2JOJ; Sat, 03 Feb 2024 13:33:45 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rWFCj-0000000GKjn-0gTm; Sat, 03 Feb 2024 12:33:05 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Cc:To:In-Reply-To:References: Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Sender:Reply-To:Content-ID:Content-Description; bh=npDy0Wmy9sZ4pKZgJh/SDPTi250q9KNBnEHGR8MQcNY=; b=XYMoIJ8T8c9s4fr01DzqT8ow0Q rBGDiUJd1GTxD4CBfl35kV7XH5pNmvaSSkhAJT6l2k/LlHQknqHRNGew88GaGLDEAu5/ibDH+RQNj g50N/YH9NPnnhNX0ETM9lSi6+Lgon28meFr/uRdhboIweFkZu9RaSP3vnqCzh3u5WIm2fQLQPp9lv wnUEFO5PrTIRPSSanXpQpRDfq0FSo7ODpBSyDoKaJgUlLFmfF1LwvejKE91FKVG5Fq/f5upY7SVlr v1V1V1RmhcKtK+O0tR0LNZ4kZSQuBGH1SRrONypeV5Kic+gS9lxmfnujkyRVDVEld3mjMdn68yq+8 LymHBGpg==; Received: from sin.source.kernel.org ([145.40.73.55]) by desiato.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rWFCU-0000000AlbA-3RFV; Sat, 03 Feb 2024 12:32:56 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 04A02CE1F0F; Sat, 3 Feb 2024 12:32:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 32B8AC43394; Sat, 3 Feb 2024 12:32:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706963563; bh=12GEB0Pk7RCg7IDCHng3d3qOxpvs8kdDfOLg/QCQKjw=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=rq54rGZnx24MR+LUh3nV3e8oP26hH94Ibu9LOex/80fqVy+e02EBu6dqOsyofq/dn 9S3U4uPifeLeILbteJBG/QpWUnZBy2WOLOp+KlMEeRcHL0qaYHcKVtv9q0S3QhIcwI 9E7PODu5zTqrPfUy5t4C+wZy0qNXoit/OCYzm0NAdwWQydU1XQwNFUeDX0MRP167T0 Y7Iu3LtDUIXNO0qtNGG0Y7WCih15IbGNQYHJdK+QTL7cGBX7U9Fzf95CLwlV6+DWis KDpX4Lz0jfsNLClK5EnD1j4F6fJ0rXsFQXAp3XGWDvODVXmAyfNf+vI79g1HZOXsYV THWaW5vGRn1IA== From: Mark Brown Date: Sat, 03 Feb 2024 12:25:53 +0000 Subject: [PATCH v8 27/38] kselftest/arm64: Verify the GCS hwcap MIME-Version: 1.0 Message-Id: <20240203-arm64-gcs-v8-27-c9fec77673ef@kernel.org> References: <20240203-arm64-gcs-v8-0-c9fec77673ef@kernel.org> In-Reply-To: <20240203-arm64-gcs-v8-0-c9fec77673ef@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 , Kees Cook , Shuah Khan , "Rick P. Edgecombe" , Deepak Gupta , Ard Biesheuvel , Szabolcs Nagy Cc: "H.J. Lu" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Florian Weimer , Christian Brauner , Thiago Jung Bauermann , 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 0.13-dev-a684c X-Developer-Signature: v=1; a=openpgp-sha256; l=1190; i=broonie@kernel.org; h=from:subject:message-id; bh=12GEB0Pk7RCg7IDCHng3d3qOxpvs8kdDfOLg/QCQKjw=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBlvjDmTw5/9VutAafQEgaHl/AQF1z3bFN2KzUpHqGY L4zrDKaJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZb4w5gAKCRAk1otyXVSH0H76B/ 0ZxrYYCMIsi8MRn7I+3H6jNZKAVNmw8SJNvqoTY/zYbJNmq4MKh3rt6x1O2gevx9hobz/cn88DE1f9 pdIhoGTFgFsgL5+npQ6sINjikcDLWkpQZ9IKvFtQ8i0A7p1Ts6+F8ouQ/YWF5fiwDCcaglMB5SDDS0 UKDKMWST/vMh8R/NHIjFIZ/yqpAFZrbPxntxjgSGwoIONgk0N959zfmcfkPghY9+a5troDlRxfBQyg M1y/zi2IbuTvIkrM9tWMmAh0rM4cC3npQ8FUa7WcMl9u2iNHczDLo6UvLO8idOYZStNtaGst5U6Izi tbHk2hUyigCouolu0//aNQ/XwlU1i1 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-20240203_123251_929812_0EAB3E5A X-CRM114-Status: GOOD ( 10.29 ) 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. 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 1189e77c8152..bc9e3250a9df 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -63,6 +63,17 @@ static void fp_sigill(void) asm volatile("fmov s0, #1"); } +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] */ @@ -360,6 +371,14 @@ static const struct hwcap_data { .cpuinfo = "fp", .sigill_fn = fp_sigill, }, + { + .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,