From mboxrd@z Thu Jan 1 00:00:00 1970 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 D3C7216BE20; Wed, 4 Dec 2024 15:22:24 +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=1733325744; cv=none; b=jF2LekQWKewt8ekNPLcdIwbYcwlp37Lgz/MKKecgJiKCvUtO0XH4ahyxLCdCMGy/F30VZaVP6LicwIkVYU6zfKz1JOILb8LYoF2oXnANYOLvBaKH2TVf+j1to7S0s5/Zh5aFiPXotc/XxJbEA8WO49sVafWVfWyjGTmz0yj7RfY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733325744; c=relaxed/simple; bh=YxbdLK0hPdinmJ7aseN6ZxvZEvKSnXJP4oKfttGQxMg=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=GQj9kFpqU2Y5k3Ab57J5ndQxKfHbegDhWOmrOlvZylEM9bKHejXQ/phvrbOQsR+UUNiDbN8Cr5LcUrO4cxH5IPI+IisKJxo4jn0W4sjYsX28+UK0EWFMYFODv1od32H1RebDPHwC4XyT7Rsk+pIX6+cfAYdnXnwZCe4DBCuR0t0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=so4yfvkv; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="so4yfvkv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A79C0C4CECD; Wed, 4 Dec 2024 15:22:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733325744; bh=YxbdLK0hPdinmJ7aseN6ZxvZEvKSnXJP4oKfttGQxMg=; h=From:Subject:Date:To:Cc:From; b=so4yfvkvN9CDgMc6hEnOllf8Nm3zaqsK5NEJLHvCdhz31RV7sTx/cq/2nSN8Dku7t 23F6IN8Gad0ycca3IE/TPM3lwhxI7iNC2BH1NAJVtJHwhtFwaQwFha6HJxkiA7y6jY AaDRjIFCQ9T0G/pwyJ4cI9YpG28v7YJt0+vsQIsL+fF536WuodGM9uyl8tS8QKPG7Q sslqF9neGm6Ws1LyD1yspxyYr43IkTWrfSzyxp1MfAkvQKUwIcGsXJeWXP3ZOWkHyp K2eneCiB2Wko+9nX4bWJlBHZy3ARSAXj9wwRxypcpDL7q9wADVPGEKCYqmhA6UcaCc Alv9sv6d3sEGA== From: Mark Brown Subject: [PATCH v2 0/6] arm64/sme: Collected SME fixes Date: Wed, 04 Dec 2024 15:20:48 +0000 Message-Id: <20241204-arm64-sme-reenable-v2-0-bae87728251d@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAFBzUGcC/22Nyw6CMBREf4XctddQqDxc+R+GRYERGqGYW0M0p P9uJXHnZpIzyZzZyEMsPJ2TjQSr9XZxEbJDQt1o3AC2fWTK0kyrGGxkLjT7GSyAM+0ErisUulO FMhUoDh+Cm33t0msTebT+uch7/1jVt/3p8n+6VXHKfXXKdVn3qi3Lyx3iMB0XGagJIXwArzVMW rUAAAA= X-Change-ID: 20241202-arm64-sme-reenable-98e64c161a8e To: Catalin Marinas , Will Deacon Cc: Mark Rutland , Dave Martin , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Mark Brown , stable@vger.kernel.org X-Mailer: b4 0.15-dev-9b746 X-Developer-Signature: v=1; a=openpgp-sha256; l=1436; i=broonie@kernel.org; h=from:subject:message-id; bh=YxbdLK0hPdinmJ7aseN6ZxvZEvKSnXJP4oKfttGQxMg=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBnUHOoeQbPc1HbfhMEJ6VMwbqGljtgzH/xL/utSJwc BuyUoruJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCZ1BzqAAKCRAk1otyXVSH0BawB/ 90OIzPt6j6CGU6RuSdHVSMeewxBU+uf1YFk4npaIu9/p54fletxj5NfLw3xCyb3bdsFlmpFpk3S/AW Wx/8C6TMHj/2Iuohrqgm5pUK+h8LS1WET6CSqFh45R9N1+V3MvfuLr7Z7L1mMMBd+VbV733ZiEJAFO sg/pNDrso2ZbqEDbog4svL/AwhmtkaL+uIUSdikXRrNzc0TPGvQ6w4pgzXlau6eTRbuCUrPP/8rfRy AcS1URPzbJ7KoSmU00K9d0c6OY2NCH7une+m/R6lM5SZcLdY23cnuE/TWDFDNO6K5DHaxpZJ2IUBnz wWdJhYdYKubtbJO5c4aQUCD979PDH2 X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB This series collects the various SME related fixes that were previously posted separately. These should address all the issues I am aware of so a patch which reenables the SME configuration option is also included. Signed-off-by: Mark Brown --- Changes in v2: - Pull simplification of the signal restore code after the SME reenablement, it's not a fix but there's some code overlap. - Comment updates. - Link to v1: https://lore.kernel.org/r/20241203-arm64-sme-reenable-v1-0-d853479d1b77@kernel.org --- Mark Brown (6): arm64/sme: Flush foreign register state in do_sme_acc() arm64/fp: Don't corrupt FPMR when streaming mode changes arm64/ptrace: Zero FPMR on streaming mode entry/exit arm64/signal: Avoid corruption of SME state when entering signal handler arm64/sme: Reenable SME arm64/signal: Consistently invalidate the in register FP state in restore arch/arm64/Kconfig | 1 - arch/arm64/include/asm/fpsimd.h | 1 + arch/arm64/kernel/fpsimd.c | 57 ++++++++++++++++++++++---- arch/arm64/kernel/ptrace.c | 12 +++++- arch/arm64/kernel/signal.c | 89 +++++++++++------------------------------ 5 files changed, 84 insertions(+), 76 deletions(-) --- base-commit: 40384c840ea1944d7c5a392e8975ed088ecf0b37 change-id: 20241202-arm64-sme-reenable-98e64c161a8e Best regards, -- Mark Brown