From patchwork Thu Sep 8 13:55:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Penny Zheng X-Patchwork-Id: 12970174 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 7188EC38145 for ; Thu, 8 Sep 2022 13:56:01 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.403387.645514 (Exim 4.92) (envelope-from ) id 1oWI0X-0004Fw-Az; Thu, 08 Sep 2022 13:55:53 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 403387.645514; Thu, 08 Sep 2022 13:55:53 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1oWI0X-0004Fi-71; Thu, 08 Sep 2022 13:55:53 +0000 Received: by outflank-mailman (input) for mailman id 403387; Thu, 08 Sep 2022 13:55:52 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1oWI0W-0002rI-6n for xen-devel@lists.xenproject.org; Thu, 08 Sep 2022 13:55:52 +0000 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by se1-gles-sth1.inumbo.com (Halon) with ESMTP id f2f5e8ca-2f7d-11ed-a31c-8f8a9ae3403f; Thu, 08 Sep 2022 15:55:51 +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 21105106F; Thu, 8 Sep 2022 06:55:57 -0700 (PDT) Received: from a011292.shanghai.arm.com (a011292.shanghai.arm.com [10.169.190.94]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 787F03F7B4; Thu, 8 Sep 2022 06:55:48 -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: f2f5e8ca-2f7d-11ed-a31c-8f8a9ae3403f From: Penny Zheng To: xen-devel@lists.xenproject.org Cc: wei.chen@arm.com, Penny Zheng , Stefano Stabellini , Julien Grall , Bertrand Marquis , Volodymyr Babchuk Subject: [PATCH v8 8/9] xen/arm: enable statically shared memory on Dom0 Date: Thu, 8 Sep 2022 21:55:12 +0800 Message-Id: <20220908135513.1800511-9-Penny.Zheng@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220908135513.1800511-1-Penny.Zheng@arm.com> References: <20220908135513.1800511-1-Penny.Zheng@arm.com> MIME-Version: 1.0 From: Penny Zheng To add statically shared memory nodes in Dom0, user shall put according static shared memory configuration under /chosen node. This commit adds shm-processing function process_shm in construct_dom0 to enable statically shared memory on Dom0. Signed-off-by: Penny Zheng Reviewed-by: Stefano Stabellini --- v8 changes: - no change --- v7 changes: - no change --- v6 change: - no change --- v5 change: - no change --- v4 change: - no change --- v3 change: - no change --- v2 change: - no change --- xen/arch/arm/domain_build.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index cd03370b38..8c77c764bc 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -2705,6 +2705,11 @@ static int __init handle_node(struct domain *d, struct kernel_info *kinfo, if ( res ) return res; } + + res = make_resv_memory_node(d, kinfo->fdt, addrcells, sizecells, + &kinfo->shm_mem); + if ( res ) + return res; } res = fdt_end_node(kinfo->fdt); @@ -3780,6 +3785,9 @@ static int __init construct_dom0(struct domain *d) { struct kernel_info kinfo = {}; int rc; +#ifdef CONFIG_STATIC_SHM + const struct dt_device_node *chosen = dt_find_node_by_path("/chosen"); +#endif /* Sanity! */ BUG_ON(d->domain_id != 0); @@ -3814,6 +3822,12 @@ static int __init construct_dom0(struct domain *d) allocate_memory_11(d, &kinfo); find_gnttab_region(d, &kinfo); +#ifdef CONFIG_STATIC_SHM + rc = process_shm(d, &kinfo, chosen); + if ( rc < 0 ) + return rc; +#endif + /* Map extra GIC MMIO, irqs and other hw stuffs to dom0. */ rc = gic_map_hwdom_extra_mappings(d); if ( rc < 0 )