From patchwork Wed Jan 26 15:11:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 537015 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 D9D04C3526D for ; Wed, 26 Jan 2022 15:13:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235791AbiAZPNa (ORCPT ); Wed, 26 Jan 2022 10:13:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41096 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242625AbiAZPN3 (ORCPT ); Wed, 26 Jan 2022 10:13:29 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 29D95C06161C for ; Wed, 26 Jan 2022 07:13:29 -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 BB444617B4 for ; Wed, 26 Jan 2022 15:13:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C0567C340E6; Wed, 26 Jan 2022 15:13:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643210008; bh=QxDCYADgLO7Ate8OqAbdluQUXHUE34NK/8kXtjiy66A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JHtV8VJLvuGbs3WmZsViKNdU5o3APfzD3v1wH73TlEn8/WGXUf3BhVo7Xpcy+X07e alTFNfoYZZ7hV61YByc4IazNRcpeinW585zTp9KcJvZ9otLmWM7h8bYJtel7bOUdvK K0x392mH+wjsQVI/UR0gLNLZB7hodOTb4H5sXuPw/wPpm1k6fKoXksbXEwsSACpvot W4IFCPJE1R4ptCwm5sscfEXrTdbiP980ndvDefu2iSO7aQuf0W7+/hLHFnOyglVCc7 IJet6YCxtNp0KhwfJwF9ZQu5YObj+PMHU+3Z4ff5kF6dcfdljEh2Du/FRshHnbANN1 QZ0YMFcr9DNYg== 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 v9 28/40] arm64/sme: Provide Kconfig for SME Date: Wed, 26 Jan 2022 15:11:08 +0000 Message-Id: <20220126151120.3811248-29-broonie@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220126151120.3811248-1-broonie@kernel.org> References: <20220126151120.3811248-1-broonie@kernel.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1350; h=from:subject; bh=QxDCYADgLO7Ate8OqAbdluQUXHUE34NK/8kXtjiy66A=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBh8WSMO5EXNCblah8mNd3crJRe3Ue7ZJ3oWFjj+/Wo dCuJNvuJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCYfFkjAAKCRAk1otyXVSH0JqyB/ 0QTisbTvOcPNbemLX9/+A5acoUoqosDxXpmP+/QRizvr7vIQO/vILQS2jbt/6YdX4WQHnesEwRKpfR Ow+7cQgQPnEht6HgTXwQKEpUZ+hxEZLyMsUho51y+i9giTQYNWkbe4qpZLd4oRnNaxkY0CP+a/YCgg 81ETu0W84H7FDqxaeAFKQrY+BmCB2eiA2jR0qe4Z5/iVzR9My9xEsO4mPuTAdkP28mMqMRvlBpQt7F YvW+TXcIh/b5z/niRxjBIyBHPvpKsGV2ER4XsZ5EPk7gUazv+vVEvThGRjkgeaIL8ECtOI3KWx2Dtx DDpCIWHu4J3aaWTlstWKrVKXC8gUYZ 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 --- arch/arm64/Kconfig | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 6978140edfa4..f60f3b04ddf5 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1839,6 +1839,17 @@ 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