From nobody Tue Feb 10 11:12:52 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=fail(p=none dis=none) header.from=arm.com Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1652778755272716.3099666719788; Tue, 17 May 2022 02:12:35 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.330660.554064 (Exim 4.92) (envelope-from ) id 1nqtFR-0002Y0-Ml; Tue, 17 May 2022 09:12:09 +0000 Received: by outflank-mailman (output) from mailman id 330660.554064; Tue, 17 May 2022 09:12:09 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1nqtFR-0002Xr-JW; Tue, 17 May 2022 09:12:09 +0000 Received: by outflank-mailman (input) for mailman id 330660; Tue, 17 May 2022 09:12:08 +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 1nqtA1-0005zY-GQ for xen-devel@lists.xenproject.org; Tue, 17 May 2022 09:06:33 +0000 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by se1-gles-flk1.inumbo.com (Halon) with ESMTP id a3f188d9-d5c0-11ec-837e-e5687231ffcc; Tue, 17 May 2022 11:06:30 +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 D2EF21063; Tue, 17 May 2022 02:06:29 -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 4EDF13F73D; Tue, 17 May 2022 02:06:27 -0700 (PDT) X-Outflank-Mailman: Message body and most headers restored to incoming version 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: a3f188d9-d5c0-11ec-837e-e5687231ffcc 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 v4 8/8] xen/arm: enable statically shared memory on Dom0 Date: Tue, 17 May 2022 17:05:29 +0800 Message-Id: <20220517090529.3140417-9-Penny.Zheng@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220517090529.3140417-1-Penny.Zheng@arm.com> References: <20220517090529.3140417-1-Penny.Zheng@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZM-MESSAGEID: 1652778757554100001 Content-Type: text/plain; charset="utf-8" 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 --- 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 ba044cab60..bbf5461595 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -2614,6 +2614,11 @@ static int __init handle_node(struct domain *d, stru= ct kernel_info *kinfo, if ( res ) return res; } + + res =3D make_resv_memory_node(d, kinfo->fdt, addrcells, sizecells, + &kinfo->shm_mem); + if ( res ) + return res; } =20 res =3D fdt_end_node(kinfo->fdt); @@ -3637,6 +3642,9 @@ static int __init construct_dom0(struct domain *d) { struct kernel_info kinfo =3D {}; int rc; +#ifdef CONFIG_STATIC_SHM + const struct dt_device_node *chosen =3D dt_find_node_by_path("/chosen"= ); +#endif =20 /* Sanity! */ BUG_ON(d->domain_id !=3D 0); @@ -3671,6 +3679,12 @@ static int __init construct_dom0(struct domain *d) allocate_memory_11(d, &kinfo); find_gnttab_region(d, &kinfo); =20 +#ifdef CONFIG_STATIC_SHM + rc =3D process_shm(d, &kinfo, chosen); + if ( rc < 0 ) + return rc; +#endif + /* Map extra GIC MMIO, irqs and other hw stuffs to dom0. */ rc =3D gic_map_hwdom_extra_mappings(d); if ( rc < 0 ) --=20 2.25.1