From patchwork Tue Jan 30 00:02:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 13536583 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 46AB0C47DA9 for ; Tue, 30 Jan 2024 00:14:55 +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:MIME-Version:Message-Id:Date: Subject:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=CH8LZ3kO2cxJzOHtS0m6rTJ1JjUi2KTfZWFzEte9vGg=; b=HbuGVJ5KqeSoKU WlmiIBJJ8rWq6n04y8O+6Cp8G3YkecKXvtRMntyzX3/JL2ti5yp8oPs7VGgHeTzsjSba5bHmVFo9n NCee+OfwDoQcTQHmX7cvXvFutvVfYxheEArCoCh5WHb9uYCMrsaQI9mWsZVTS4UbtGQFYDPdfmXv4 BSRUbFvl1FHa2ggTlY272HVU0qEfafZmxix1Evz+TOLQlRL41jGnAYNywNoyp4UNCz9RK0mqe91CC R1DfTk1seNCkxbhulD31dzv/SHSZdWpuNCTtj0q303UfTpjf60MZ4XkLdgbX8wuivdqm/kx0Ilf2e 06m3YAnspmPsYkWJMn0g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rUblz-0000000EfmE-3Fa8; Tue, 30 Jan 2024 00:14:43 +0000 Received: from sin.source.kernel.org ([2604:1380:40e1:4800::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rUblp-0000000Efi1-1W0f for linux-arm-kernel@lists.infradead.org; Tue, 30 Jan 2024 00:14:34 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 97EB0CE12A5; Tue, 30 Jan 2024 00:14:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 77ADDC433F1; Tue, 30 Jan 2024 00:14:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706573668; bh=1NRtCpz4VPp/Yq/drptQbUJSG0OlGHk6ih4YpuLMwd0=; h=From:Subject:Date:To:Cc:From; b=XDG1TiGZnmqZRyhb3cWB5rG3jzsmmcFuKTGt63/+sUcWk78oP/QNRbVsWVp+IjQOj gFpIqiCLP3ocb8ntszPvAQOIFt+kNo530cuWCI6ex1kUUcmCcRoeMfIYs2VMHHSm4T t2WSCPLPM8oSD+vvafAuCk4agdr//p1TMi8nxR1MRRCn9hHtHM/FL7C4WaV4Nolb/m mWvpkmR/zBIxvuI9UHufQpl1mEaOTcpuvFdDV6MGWVYolv7zP4WQkB0JWZFYbArDK9 FcFpuU979ZLqr+d0VaipwRZby2DSgr5IMOchHhAZD2tYZ0VXoix6JNWiqYx/SIx7D1 4EtHQ8af5usvg== From: Mark Brown Subject: [PATCH 0/2] arm64/sme: Fix handling of traps on resume Date: Tue, 30 Jan 2024 00:02:47 +0000 Message-Id: <20240130-arm64-sme-resume-v1-0-0e60ebba18df@kernel.org> MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAKc8uGUC/x2MMQqAMAwAvyKZLbRRC/Ur4lA1aoaqJCiC+HeL0 3HD3QNKwqTQFg8IXay8b1lcWcC4xm0hw1N2QIu1dRhMlORro4mMkJ4ZFXrvGosBBw85O4Rmvv9 l17/vB+H+GhhiAAAA To: Catalin Marinas , Will Deacon Cc: Dave Martin , Jackson Cooper-Driver , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Mark Brown X-Mailer: b4 0.13-dev-a684c X-Developer-Signature: v=1; a=openpgp-sha256; l=728; i=broonie@kernel.org; h=from:subject:message-id; bh=1NRtCpz4VPp/Yq/drptQbUJSG0OlGHk6ih4YpuLMwd0=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBluD9gOXKfNU7diV0+qg2AWrCO5D3yOccSHLyLgY29 UKDCaD+JATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZbg/YAAKCRAk1otyXVSH0NWoB/ 0cENzSwzeB6KXF8FRfTtKsaIGfrtYF+2QzNvfF8lfAlrXEbQZ7t98iXQufi6L2v6Sj4rIY4S2+mlbL e0JOuyAKEAh72fjtSXhe9Asp7vRhCeB3ewhqAwlFIIV7cWTeG7q+iGJQ8N0FUVRV5y+JYAwMKh2GAK TmIb6xrbP9jFsA1SGn6+bd6JQTvEGdG0ulnl4XXk+B0VCzxuCLW9oXaaIpenxj/OKhwfaz1IBCmfK4 ylPL18vJim5MjA8NhoqAmcHtGBaKsh64PdAweC3NPxwyeLjXcC7q4Qzm/b62qG/d5bVHqj5xx3yuxU U/IVpx/m3+Mz13pMHOQi1SvoLQR1Nc 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-20240129_161433_612383_B446F7CF X-CRM114-Status: UNSURE ( 6.89 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The fast model was recently changed to reset system registers to 0 on resume, exposing the fact that for SME we do not restore the configuration of traps for extensions that add state. Fix this. Signed-off-by: Mark Brown --- Mark Brown (2): arm64/sme: Restore SMCR on exit from suspend arm64/sme: Restore SMCR_EL1.EZT0 on exit from suspend arch/arm64/include/asm/fpsimd.h | 2 ++ arch/arm64/kernel/fpsimd.c | 15 +++++++++++++++ arch/arm64/kernel/suspend.c | 3 +++ 3 files changed, 20 insertions(+) --- base-commit: 41bccc98fb7931d63d03f326a746ac4d429c1dd3 change-id: 20240129-arm64-sme-resume-3266150292b6 Best regards,