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 D87C941E22; Thu, 16 Nov 2023 16:32:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="GIH23K7h" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 53BB6C433C8; Thu, 16 Nov 2023 16:32:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1700152330; bh=2AUgUkcEUb1Dh5x3KSpyBJesyiJX2z8vbRrpUlQ60nw=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=GIH23K7hBKtEtYHXobqTZTsVgXPnpe5kXlhN3cL4qnGTmifKKAxlQmqzUC9iGvzxg 4Ijh4V8/faa398mOR5VruAxbIK4zLVdSB9B05E8FuZ2UIAynF8YXKBGUFr62534AA4 OoJ3Jlxl/PjFfH4NAm9aI2+GsOg5osswqWjaQJN4LR0b6BGLWUUALuouhPWmfj+vAI EhHSQrdu3QZAa/LDXfddPqtk76geWD9u2nSX6ok+uqKdcbVTuB0DwR713QPCgWU9pt xcV3uSsQxxPIZ5o2ELnfjjNyMoG5JCxtq5y/2IZZogRbC2XBTfw6J9TSI1niJhOxqd BRJbOa2m8sxLg== Received: from disco-boy.misterjones.org ([217.182.43.188] helo=www.loen.fr) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1r3fHj-00DjWX-Ho; Thu, 16 Nov 2023 16:32:07 +0000 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Date: Thu, 16 Nov 2023 16:32:07 +0000 From: Marc Zyngier To: Yi-De Wu Cc: Yingshiuan Pan , Ze-Yu Wang , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Corbet , Catalin Marinas , Will Deacon , Matthias Brugger , AngeloGioacchino Del Regno , Arnd Bergmann , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, David Bradil , Trilok Soni , Jade Shih , Ivan Tseng , My Chuang , Shawn Hsiao , PeiLun Suei , Liju Chen , Willix Yeh , Kevenny Hsieh Subject: Re: [PATCH v7 03/16] virt: geniezone: Add GenieZone hypervisor driver In-Reply-To: <20231116152756.4250-4-yi-de.wu@mediatek.com> References: <20231116152756.4250-1-yi-de.wu@mediatek.com> <20231116152756.4250-4-yi-de.wu@mediatek.com> User-Agent: Roundcube Webmail/1.4.15 Message-ID: X-Sender: maz@kernel.org Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 217.182.43.188 X-SA-Exim-Rcpt-To: yi-de.wu@mediatek.com, yingshiuan.pan@mediatek.com, ze-yu.wang@mediatek.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, corbet@lwn.net, catalin.marinas@arm.com, will@kernel.org, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, arnd@arndb.de, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, dbrazdil@google.com, quic_tsoni@quicinc.com, jades.shih@mediatek.com, ivan.tseng@mediatek.com, my.chuang@mediatek.com, shawn.hsiao@mediatek.com, peilun.suei@mediatek.com, liju-clr.chen@mediatek.com, chi-shen.yeh@mediatek.com, kevenny.hsieh@mediatek.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false On 2023-11-16 15:27, Yi-De Wu wrote: > From: "Yingshiuan Pan" > > GenieZone hypervisor(gzvm) is a type-1 hypervisor that supports various > virtual machine types and provides security features such as TEE-like > scenarios and secure boot. It can create guest VMs for security use > cases and has virtualization capabilities for both platform and > interrupt. Although the hypervisor can be booted independently, it > requires the assistance of GenieZone hypervisor kernel driver(gzvm-ko) > to leverage the ability of Linux kernel for vCPU scheduling, memory > management, inter-VM communication and virtio backend support. > > Add the basic hypervisor driver. Subsequent patches will add more > supported features to this driver. > > Signed-off-by: Yingshiuan Pan > Signed-off-by: Jerry Wang > Signed-off-by: Liju Chen > Signed-off-by: Yi-De Wu > --- > MAINTAINERS | 3 + > arch/arm64/Kbuild | 1 + > arch/arm64/geniezone/Makefile | 9 +++ > arch/arm64/geniezone/gzvm_arch_common.h | 37 ++++++++++ > arch/arm64/geniezone/vm.c | 40 +++++++++++ > drivers/virt/Kconfig | 2 + > drivers/virt/geniezone/Kconfig | 16 +++++ > drivers/virt/geniezone/Makefile | 10 +++ > drivers/virt/geniezone/gzvm_main.c | 89 +++++++++++++++++++++++++ > include/linux/gzvm_drv.h | 25 +++++++ > 10 files changed, 232 insertions(+) > create mode 100644 arch/arm64/geniezone/Makefile > create mode 100644 arch/arm64/geniezone/gzvm_arch_common.h > create mode 100644 arch/arm64/geniezone/vm.c > create mode 100644 drivers/virt/geniezone/Kconfig > create mode 100644 drivers/virt/geniezone/Makefile > create mode 100644 drivers/virt/geniezone/gzvm_main.c > create mode 100644 include/linux/gzvm_drv.h > [...] > diff --git a/arch/arm64/geniezone/gzvm_arch_common.h > b/arch/arm64/geniezone/gzvm_arch_common.h > new file mode 100644 > index 000000000000..10037013ab91 > --- /dev/null > +++ b/arch/arm64/geniezone/gzvm_arch_common.h > @@ -0,0 +1,37 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +/* > + * Copyright (c) 2023 MediaTek Inc. > + */ > + > +#ifndef __GZVM_ARCH_COMMON_H__ > +#define __GZVM_ARCH_COMMON_H__ > + > +#include > + > +enum { > + GZVM_FUNC_PROBE = 12, > + NR_GZVM_FUNC, > +}; > + > +#define SMC_ENTITY_MTK 59 > +#define GZVM_FUNCID_START (0x1000) > +#define GZVM_HCALL_ID(func) \ > + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, ARM_SMCCC_SMC_32, \ > + SMC_ENTITY_MTK, (GZVM_FUNCID_START + (func))) > + ARM_SMCCC_SMC_32? Really? You never pass a 64bit quantity anywhere? I'm half tempted to enforce the truncation to 32bit. M. -- Jazz is not dead. It just smells funny...