From patchwork Tue Feb 13 23:06:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 20338 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7300:bc8a:b0:106:860b:bbdd with SMTP id dn10csp859553dyb; Tue, 13 Feb 2024 15:07:47 -0800 (PST) X-Forwarded-Encrypted: i=3; AJvYcCUxqYoeB/ArNyrVgioxgtVgxdVTIFjljRiIr9s0/T8fiapJ91AzuPlzqcQ8BSgzn3WayWzSxJ9Eyh7XP/gXsHjdnSkrYg== X-Google-Smtp-Source: AGHT+IHCnbv/VFasRABv6ahK8ONLWfOZLZxntS5ZSEBEyO79BF0bc4X/gQs7j/a08Rhww4Q4qO8W X-Received: by 2002:a17:902:ecc5:b0:1d8:e1f0:9af6 with SMTP id a5-20020a170902ecc500b001d8e1f09af6mr1226033plh.36.1707865667350; Tue, 13 Feb 2024 15:07:47 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1707865667; cv=pass; d=google.com; s=arc-20160816; b=oqn+tb22COapXUDfBIMpxYmbmquuja7TpKLpGKcwAKeqbqo7AOq4ei4NrN5nQQKiqE pzRfLKWe/B8+R/7z1zguWHjoiyH/vvZJInFHbTMKruy18WvxMj3n816B182dmSAEXGJk 5uFrhzEEunKGus8rqSgVRLSrIdiVdjIkghHkGNYlOUmlm4uwGgbrsdKWYwif4RD6ZxYz fFwqr5AeZCvF0hq01WN7fb1BObBro9/Dev7BgI0+9Nzq5KsYptfyHNiZ8gOfgD3MMRHC fk9fZxVd7IdcKGePmsdO7swJTdWe0mDqwg+s3QD3KwUmDGToAZFjebdFgN+E0qjnz42s gxDA== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=cc:to:content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:message-id:date:subject:from :dkim-signature; bh=ZVVhFnMJll5gmo/xAzfr6BisNklxlpqTwPwqgxr7158=; fh=yYtTk7JA7FD1dXgWtPqwvWp/wvEEOiSSt2CBEQueVgw=; b=a02co9JxWlUdgLBUM4rTe8MTpRcWHFg+tlXJdR+IEE53sfcSkyZX2UqfXVfDoeWXZ1 mbI2WrO2kSm42vQouF69drZNRXgwMQ5wgQa6Di4AHEANq4cV7XX0tNMRcRZL+hVxXPf7 DGtvUFhbHVXOEG968R4MgwWEA6hp4vEmm4kJ184clDZlAgGd8oV15QeacW5RODqyDgHh tbE4QJ6+TOwuEaqPn/SuZgKzDRnc6IMOJz7d0MTTZXvd2TpPc/VKeu2li75j4byySMQq S+4Tfu4xlelj17A3SS0agHCc09BZrG4I9+msvX3ORqxEso07wTtYpOheeHHWlpoWz+6U bZVA==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b="qOekE/Wg"; arc=pass (i=1 dkim=pass dkdomain=kernel.org); spf=pass (google.com: domain of linux-kernel+bounces-64504-ouuuleilei=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) smtp.mailfrom="linux-kernel+bounces-64504-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org X-Forwarded-Encrypted: i=2; AJvYcCWAXF2/EjjaH7eH1/hD6n2yysTnjhsGWhF2ZUlKMdaUnRnfZwyM+iksJYBc1SQDQvOSdL8pWv1bqnCWWZhq5dCXkjeU7w== Received: from sv.mirrors.kernel.org (sv.mirrors.kernel.org. [139.178.88.99]) by mx.google.com with ESMTPS id im15-20020a170902bb0f00b001db55c24bddsi275088plb.569.2024.02.13.15.07.47 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Feb 2024 15:07:47 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-64504-ouuuleilei=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b="qOekE/Wg"; arc=pass (i=1 dkim=pass dkdomain=kernel.org); spf=pass (google.com: domain of linux-kernel+bounces-64504-ouuuleilei=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) smtp.mailfrom="linux-kernel+bounces-64504-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id 0F18628C326 for ; Tue, 13 Feb 2024 23:07:47 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 5DF8063123; Tue, 13 Feb 2024 23:07:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="qOekE/Wg" Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B82FE62810 for ; Tue, 13 Feb 2024 23:07:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707865634; cv=none; b=XXsNyY33DRgaGWayPF5fH14aBCGQn5tceHTlLjwgbZsQMexCO7flloBymaWEzx1kKt6lak/dFmXwVChG5VZe7L+FySqL8zg+fI7GwE6/MVRyp1C7x9sXFQGKM0MhNdZyp6MIaddQtR5blVMjmctXB0U9GNhpzNSiwcmrVFBs/Sc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707865634; c=relaxed/simple; bh=f2Cdl3IDDtVePEix7n4iaiKSi9bMZGjncwLg38ulR7U=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=F+mRC2TN6q0ufyc3a+Fo55JFYM4xiS2toMvySyu3esyLVHxlrc+fK+zh5zTsZl6gsYoQhEVWaPL2iF3N2g0EleByMY2awuannBGWTCrH7f374W2Z17wqfu7yLAU45tsWcT0zLLhl8YWeKWS0mQ7AaVEy0tokcG5dMPiutLwXfS4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qOekE/Wg; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id B45A0C433F1; Tue, 13 Feb 2024 23:07:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1707865634; bh=f2Cdl3IDDtVePEix7n4iaiKSi9bMZGjncwLg38ulR7U=; h=From:Subject:Date:To:Cc:From; b=qOekE/Wg1oH05btXKZszw40TIAQU+iF2PFDcEq+hVEad1Nfkdq6i02JSUtVf256+H WKLoMOYOyUw74OSOnO6cPdFgaZtsqcSIEePdtyyBM0j0LrtMwqKoM4PfyAf+LfLAG1 7noTdNKjw7A6u/Mk/PRQKMiRfIVkhgTN6hiM1JZ6svoU6F+chPatQbF2GaQlAlH/Y9 P+KyWgm7KLQ8ZxVdkNkWiWequ2J0xmGIeiCzs1qqLo/Mex18HnwANbUTj/Lp0QGyVT Mswr6YIkirZgjgfbG5AElRUIBByqqSn7sqE/vlUV5DM8WVFEBn6FBuEPuvCpOW51ID zDgFM6eDAKulg== From: Mark Brown Subject: [PATCH v3 0/2] arm64/sme: Fix handling of traps on resume Date: Tue, 13 Feb 2024 23:06:31 +0000 Message-Id: <20240213-arm64-sme-resume-v3-0-17e05e493471@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAPj1y2UC/23NwQrCMAyA4VcZPVtp0644T76HeGjXbCu6TVIty ti72w1BRE/hD+TLxCJSwMj2xcQIU4hhHHKoTcHqzg4t8uBzMxCghYSKW+qN5rFHThjveSgwRpY CKnCG5bMrYRMeK3k85e5CvI30XD8kuWzfmBK/WJJccIFGoHNW7nxzOCMNeNmO1LJFS/ARQKg/A mTBysZZ72utofwS5nl+Af/ek9jzAAAA 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=1028; i=broonie@kernel.org; h=from:subject:message-id; bh=f2Cdl3IDDtVePEix7n4iaiKSi9bMZGjncwLg38ulR7U=; b=owGbwMvMwMWocq27KDak/QLjabUkhtTT3+RCY892RR1RDYhT7W0o+B9V0yW9ViFhrZKzwr3K0r1f v57tZDRmYWDkYpAVU2RZ+yxjVXq4xNb5j+a/ghnEygQyhYGLUwAmMruR/a+sWoy8GPdVrq3axQx6MZ N/HFTmvrmtYqfFfqv7pYV2zmm5gckrtjG1Srxec+52/5Ylp+qqbi99csrZLWaBVdLkxn72o/s3BEau Xvqz+/9EieMhn5/Yr/18ZocUS/S5I70LhJ+857QS9gmvNrHJE3BK9mueH6QaXKA99xB/f0OqQITJTr lNsbN7bYptlPplCxeKeN56U5Soqbg9nn2uwqnYKrf/91ZX3NDNdPDlClZnM5zrbZ+xdoGfQK3RDkWR zROEE9RkiwQWWMRuYBF53VPrm6tTblbY0eXy/9iFRetEr996LtjnduaYYJKelP0/+1d/S6o2potZNO 5e6/k1UfHRvvA9ywx+/Tj7bcYbAA== X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1790826949952447991 X-GMAIL-MSGID: 1790826949952447991 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 --- Changes in v3: - Tweak commit message. - Link to v2: https://lore.kernel.org/r/20240203-arm64-sme-resume-v2-0-a1fbaddc4425@kernel.org Changes in v2: - Also reinitialise SMPRI_EL1. - Link to v1: https://lore.kernel.org/r/20240130-arm64-sme-resume-v1-0-0e60ebba18df@kernel.org --- Mark Brown (2): arm64/sme: Restore SME registers 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 | 16 ++++++++++++++++ arch/arm64/kernel/suspend.c | 3 +++ 3 files changed, 21 insertions(+) --- base-commit: 41bccc98fb7931d63d03f326a746ac4d429c1dd3 change-id: 20240129-arm64-sme-resume-3266150292b6 Best regards,