From patchwork Fri May 6 07:25:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Penny Zheng X-Patchwork-Id: 12840660 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 E7844C433F5 for ; Fri, 6 May 2022 07:27:12 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.322668.544114 (Exim 4.92) (envelope-from ) id 1nmsMh-0002b6-AK; Fri, 06 May 2022 07:27:03 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 322668.544114; Fri, 06 May 2022 07:27:03 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1nmsMh-0002az-68; Fri, 06 May 2022 07:27:03 +0000 Received: by outflank-mailman (input) for mailman id 322668; Fri, 06 May 2022 07:27:02 +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 1nmsLz-00078X-QD for xen-devel@lists.xenproject.org; Fri, 06 May 2022 07:26:19 +0000 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by se1-gles-sth1.inumbo.com (Halon) with ESMTP id cf6aa5d6-cd0d-11ec-a406-831a346695d4; Fri, 06 May 2022 09:26:14 +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 A3E7C1063; Fri, 6 May 2022 00:26:13 -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 C7FB53FA27; Fri, 6 May 2022 00:26:10 -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: cf6aa5d6-cd0d-11ec-a406-831a346695d4 From: Penny Zheng To: xen-devel@lists.xenproject.org Cc: wei.chen@arm.com, Penny Zheng , Stefano Stabellini , Julien Grall , Bertrand Marquis , Volodymyr Babchuk , Penny Zheng Subject: [PATCH v2 7/9] xen/arm: set up shared memory foreign mapping for borrower domain Date: Fri, 6 May 2022 15:25:00 +0800 Message-Id: <20220506072502.2177828-8-Penny.Zheng@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220506072502.2177828-1-Penny.Zheng@arm.com> References: <20220506072502.2177828-1-Penny.Zheng@arm.com> MIME-Version: 1.0 This commit sets up shared memory foreign mapping for borrower domain. If owner domain is the default dom_io, all shared domain are treated as borrower domain. Signed-off-by: Penny Zheng Reviewed-by: Stefano Stabellini --- v2 change: - remove guest_physmap_add_shm, since for borrower domain, we only do P2M foreign memory mapping now. --- xen/arch/arm/domain_build.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index 089b9e99fc..8d299a3616 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -965,6 +965,16 @@ static int __init process_shm(struct domain *d, if ( ret ) return ret; } + + if ( owner_dom_io || (strcmp(role_str, "borrower") == 0) ) + { + /* Set up P2M foreign mapping for borrower domain. */ + ret = guest_physmap_add_pages(d, _gfn(PFN_UP(gbase)), + _mfn(PFN_UP(pbase)), PFN_DOWN(psize), + p2m_map_foreign_rw); + if ( ret ) + return ret; + } } return 0;