From patchwork Thu Sep 8 11:09:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henry Wang X-Patchwork-Id: 12969948 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 lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 7D5E9ECAAD5 for ; Thu, 8 Sep 2022 11:09:38 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.403122.645110 (Exim 4.92) (envelope-from ) id 1oWFPO-0000rh-J3; Thu, 08 Sep 2022 11:09:22 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 403122.645110; Thu, 08 Sep 2022 11:09:22 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1oWFPO-0000ra-GY; Thu, 08 Sep 2022 11:09:22 +0000 Received: by outflank-mailman (input) for mailman id 403122; Thu, 08 Sep 2022 11:09:22 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1oWFPO-0000rR-6g for xen-devel@lists.xenproject.org; Thu, 08 Sep 2022 11:09:22 +0000 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by se1-gles-flk1.inumbo.com (Halon) with ESMTP id afec6c41-2f66-11ed-9760-273f2230c3a0; Thu, 08 Sep 2022 13:09:21 +0200 (CEST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 1A6D314BF; Thu, 8 Sep 2022 04:09:26 -0700 (PDT) Received: from entos-skylake.shanghai.arm.com (entos-skylake.shanghai.arm.com [10.169.212.207]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id AC9753F71A; Thu, 8 Sep 2022 04:09:16 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: afec6c41-2f66-11ed-9760-273f2230c3a0 From: Henry Wang To: xen-devel@lists.xenproject.org Cc: Henry Wang , Stefano Stabellini , Julien Grall , Bertrand Marquis , Volodymyr Babchuk , Andrew Cooper , George Dunlap , Jan Beulich , Wei Liu Subject: [PATCH v6 0/4] Introduce static heap Date: Thu, 8 Sep 2022 11:09:06 +0000 Message-Id: <20220908110910.17108-1-Henry.Wang@arm.com> X-Mailer: git-send-email 2.17.1 The static heap, or statically configured heap, refers to parts of RAM reserved in the beginning for heap. Like the static memory allocation, such static heap regions are reserved by configuration in the device tree using physical address ranges. This feature is useful to run Xen on Arm MPU systems, where only a finite number of memory protection regions are available. The limited number of protection regions places requirement on planning the use of MPU protection regions and one or more MPU protection regions needs to be reserved only for heap. The first patch enhances the error handling in processing the dts chosen node. The second patch introduces the static heap and the device tree parsing code. The third patch renames xenheap_* to directmap_* for better readablity. The fourth patch adds the implementation of the static heap pages handling in boot and heap allocator for Arm. Changes from v5 to v6: - Refine doc. - Drop duplicated code. - Add Julien's Reviewed-by. Henry Wang (4): xen/arm: bootfdt: Make process_chosen_node() return int docs, xen/arm: Introduce static heap memory xen/arm: mm: Rename xenheap_* variable to directmap_* xen/arm: Handle static heap pages in boot and heap allocator SUPPORT.md | 7 ++ docs/misc/arm/device-tree/booting.txt | 44 ++++++++ xen/arch/arm/bootfdt.c | 47 +++++--- xen/arch/arm/domain_build.c | 8 +- xen/arch/arm/include/asm/config.h | 2 +- xen/arch/arm/include/asm/mm.h | 31 ++--- xen/arch/arm/include/asm/setup.h | 23 +++- xen/arch/arm/mm.c | 50 +++++---- xen/arch/arm/setup.c | 156 ++++++++++++++++++++------ 9 files changed, 279 insertions(+), 89 deletions(-)