From patchwork Tue Sep 6 08:59:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Penny Zheng X-Patchwork-Id: 12968221 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 2A0A9C54EE9 for ; Tue, 6 Sep 2022 21:39:25 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.400144.641800 (Exim 4.92) (envelope-from ) id 1oVgHt-0000Jk-IF; Tue, 06 Sep 2022 21:39:17 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 400144.641800; Tue, 06 Sep 2022 21:39:17 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1oVgHt-0000J2-Bd; Tue, 06 Sep 2022 21:39:17 +0000 Received: by outflank-mailman (input) for mailman id 400144; Tue, 06 Sep 2022 21:39:15 +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 1oVgG0-0000Cs-EM for xen-devel@lists.xenproject.org; Tue, 06 Sep 2022 21:37:20 +0000 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by se1-gles-flk1.inumbo.com (Halon) with ESMTP id 52927a1e-2dc2-11ed-af93-0125da4c0113; Tue, 06 Sep 2022 11:00:15 +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 45732139F; Tue, 6 Sep 2022 02:00:25 -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 A951A3F7B4; Tue, 6 Sep 2022 02:00:16 -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: 52927a1e-2dc2-11ed-af93-0125da4c0113 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 v7 8/9] xen/arm: enable statically shared memory on Dom0 Date: Tue, 6 Sep 2022 16:59:40 +0800 Message-Id: <20220906085941.944592-9-Penny.Zheng@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220906085941.944592-1-Penny.Zheng@arm.com> References: <20220906085941.944592-1-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 --- 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 3b7436030e..29865637ef 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -2690,6 +2690,11 @@ 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); @@ -3762,6 +3767,9 @@ 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); @@ -3796,6 +3804,12 @@ 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 )