From patchwork Tue Apr 19 11:22:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 564615 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 76563C433F5 for ; Tue, 19 Apr 2022 11:25:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1351376AbiDSL2U (ORCPT ); Tue, 19 Apr 2022 07:28:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351444AbiDSL2D (ORCPT ); Tue, 19 Apr 2022 07:28:03 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E31E524F33 for ; Tue, 19 Apr 2022 04:25:20 -0700 (PDT) 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 ams.source.kernel.org (Postfix) with ESMTPS id 91958B8184D for ; Tue, 19 Apr 2022 11:25:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9AB25C385A7; Tue, 19 Apr 2022 11:25:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1650367518; bh=bmQq9+Hs9ppK5+d67ccvsBsIxc0wnK8U9AX00pV28UM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=W+zQqKdbQI+mS4HhiGd37IVHn7AQwgY1PLAb6tLN0oMUXC3y/po7Cxzj+1qqWVm9t lmlVYA8FQTMIQYA+ik/HqxoqcqBqHTKfTRfP5AdLKiA3+2Z6fNstTTVn1736RxHc02 V3Gtj+mN3rSTx0Hyg4XwGJhTUCb1SlBpHkgJleE9zeSIuQpm5jVgNH0HltxnOFHJAQ a0NjDM4IOc++3SZhB1DtJNCfTGTLyz6NdmYxBU9+C/SaMNoY1wTX5fpiiS4h2Tjx8B 7HPrgS/8zlc9sbNpePIdsXnEAiAQxMZ8u9RMqobECS0SRqLXLIrvyyg/dyTxPGrPVq puObr+opK4xQg== 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 , Luca Salabrino , linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, kvmarm@lists.cs.columbia.edu, Mark Brown Subject: [PATCH v14 27/39] arm64/sme: Provide Kconfig for SME Date: Tue, 19 Apr 2022 12:22:35 +0100 Message-Id: <20220419112247.711548-28-broonie@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220419112247.711548-1-broonie@kernel.org> References: <20220419112247.711548-1-broonie@kernel.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1406; h=from:subject; bh=bmQq9+Hs9ppK5+d67ccvsBsIxc0wnK8U9AX00pV28UM=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBiXpt9AxUEsFosscV36+F0kLBR+bmSz16+f2YTgKsR gljSoxOJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCYl6bfQAKCRAk1otyXVSH0K38B/ 9cna5AxLSwfYTwmYxJ0HTPZ58U0vwlssA4S4QMMfIh8sPBUEvF0t1lMm1CTZwpGn2+ZXcXyLjI8r6y ENwF82goVK2d2popKK9p0F4/UiczBMdKIYaWkfcHdyhGWxP+tZUbWB+eS1jcEA2i1hJfkYjBJaGvp4 XpF9pvEKeNHE1mEsDmWZvgqJGehpVGwU28RvuaFe1/EsWmPdikwsvyYQ4hGTXeB3zew/P9WFXPJS92 LSSmSBb9bYuxxcPW8Mxvs4p1PZlqyj/Y7nov6YLyX9Yy0+FNo4VWiQTw9rgNAMTRiA95oqNuZS5Vyt 5CIuVliAk5jrc6Vc3mAp/Fwwy+6Yrw 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 57c4c995965f..0897984918e8 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1939,6 +1939,17 @@ 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