From patchwork Fri Feb 25 16:59:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 546315 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AD2CCC433FE for ; Fri, 25 Feb 2022 17:36:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232996AbiBYRgx (ORCPT ); Fri, 25 Feb 2022 12:36:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39708 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243864AbiBYRgw (ORCPT ); Fri, 25 Feb 2022 12:36:52 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2186D22D65A for ; Fri, 25 Feb 2022 09:36:18 -0800 (PST) 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 AA47A61DC0 for ; Fri, 25 Feb 2022 17:36:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 97D39C340E7; Fri, 25 Feb 2022 17:36:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1645810577; bh=SiXh1GlTPzJ80ou8d0q75uEEfBAwCwDfZii7Ka/3bc4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=udpT4g9lCKkmUAphqul2boEFltV/bjRgD9/o1VV/ihjQHWjyaRbPX9LDTmJU/NPKz +Yk+QlG4X+tMdFnn5GjV49142nRO/JXD/zdjuy933aIzrMiEnQhvB7qFkXiby9/Zg4 KZlgZVbBHhd94dTVDhiOKEtLN6VsONLISVbVzvAWcfbl2oewyqef3DVBWC3WK8bgsw u6jH4Z9kHiUwWTrl6m+zAvhgPRXF2tKse2jtZkxFBegp9x3TSOfdzXpRifb9bwhJMg /dDRIl+KxmxTp4KGTSGolHoZjoiuhsT0ZrnGsCnbpW0FtZhRZjd3MqIxFPVSX6dRxM 63b/kOwCu35wA== From: Mark Brown To: Catalin Marinas , Will Deacon , Marc Zyngier , Shuah Khan , Shuah Khan Cc: Alan Hayward , Luis Machado , Salil Akerkar , Basant Kumar Dwivedi , Szabolcs Nagy , James Morse , Alexandru Elisei , Suzuki K Poulose , linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, kvmarm@lists.cs.columbia.edu, Mark Brown Subject: [PATCH v12 29/40] arm64/sme: Provide Kconfig for SME Date: Fri, 25 Feb 2022 16:59:12 +0000 Message-Id: <20220225165923.1474372-30-broonie@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220225165923.1474372-1-broonie@kernel.org> References: <20220225165923.1474372-1-broonie@kernel.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1406; h=from:subject; bh=SiXh1GlTPzJ80ou8d0q75uEEfBAwCwDfZii7Ka/3bc4=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBiGQrhwdYzL9L7Qrfdei4bFgf3dSM8vVVLSAm/CYiz vV7SIlmJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCYhkK4QAKCRAk1otyXVSH0DYeB/ 0T+wlUUZhxCKS58D35CrirM55QLjgJEaAbj3go2HNzocTreEjqgrzqdis4qGqEwm8F46vWM/+WvZ2u PQejUbA2DRKGJSo/tTHggJ0ZywRn7PnbSlV/S5mNE6g2oGW549oN3QFLFCBo1RoSOvv+PGOGXfdZR4 egAZvKuNhz0UBtb0bt9/Gyp6DflybEJc21Gc5+CObkj0743i2ipNxXKtaNSPU26KABLYdbtYUwYHDQ GvfqgZLDXt3HlZITSdIi478IDuNPi39EkalRJGoGfVxjIVFUfIu19zHgPRc39RJLS8TO/tvhD4tb68 wargCI+8LblSAux/RqDrnf5dWBMmnE X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Now that basline support for the Scalable Matrix Extension (SME) is present introduce the Kconfig option allowing it to be built. While the feature registers don't impose a strong requirement for a system with SME to support SVE at runtime the support for streaming mode SVE is mostly shared with normal SVE so depend on SVE. Signed-off-by: Mark Brown Reviewed-by: Catalin Marinas --- arch/arm64/Kconfig | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index cbcd42decb2a..4fd7574866cc 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1924,6 +1924,17 @@ config ARM64_SVE booting the kernel. If unsure and you are not observing these symptoms, you should assume that it is safe to say Y. +config ARM64_SME + bool "ARM Scalable Matrix Extension support" + default y + depends on ARM64_SVE + help + The Scalable Matrix Extension (SME) is an extension to the AArch64 + execution state which utilises a substantial subset of the SVE + instruction set, together with the addition of new architectural + register state capable of holding two dimensional matrix tiles to + enable various matrix operations. + config ARM64_MODULE_PLTS bool "Use PLTs to allow module memory to spill over into vmalloc area" depends on MODULES