From nobody Tue Nov 11 10:10:18 2025 Delivered-To: importer@patchew.org Received-SPF: none (zoho.com: 192.237.175.120 is neither permitted nor denied by domain of lists.xenproject.org) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=none (zoho.com: 192.237.175.120 is neither permitted nor denied by domain of lists.xenproject.org) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=fail(p=none dis=none) header.from=kernel.org ARC-Seal: i=1; a=rsa-sha256; t=1565648991; cv=none; d=zoho.com; s=zohoarc; b=OHkPBMQes2nvIvADDHaV915MWGsHs8UulX6vxrZTMSVdq26Ky+9kcH581xn9t5DaF/ckrhQrklNQG88odxTlKiucriApuArn+ctVLE6nD0S6zlD0s2aDmP1AfimN0cqKQzkNWjt992zDv/QWqbsvcLnHp9HC4u0YL53DeR81EUE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1565648991; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=xbk2/wUkys01fN4xGuqdOvIp1h8CGGDBK4N7b70wx7I=; b=jJGY7A8rxw+Mk/AdilvzAbY4N6Lxp+AvjaeXjae1QE0k4ewa6tAAzTZBbSH++bCxY3/b5B/3Qy/rOcqQpm1aXys5mq7MZtJpPlefiNPEsv3M3Pd2d6x2DWRm2ydTyBrN/g4VBG1SDY5+F7+KEw+sOj0NXa5Vpxnv7WRL+nSX/QY= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=fail; spf=none (zoho.com: 192.237.175.120 is neither permitted nor denied by domain of lists.xenproject.org) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1565648991579957.0347883143627; Mon, 12 Aug 2019 15:29:51 -0700 (PDT) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hxIo7-000815-0W; Mon, 12 Aug 2019 22:28:51 +0000 Received: from [172.99.69.81] (helo=us1-rack-iad1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hxIo5-00080c-Fs for xen-devel@lists.xenproject.org; Mon, 12 Aug 2019 22:28:49 +0000 Received: from mail.kernel.org (unknown [198.145.29.99]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 8da07b26-bd50-11e9-a582-eb81d2f18907; Mon, 12 Aug 2019 22:28:48 +0000 (UTC) Received: from sstabellini-ThinkPad-T480s.xilinx.com (c-67-164-102-47.hsd1.ca.comcast.net [67.164.102.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C18402085A; Mon, 12 Aug 2019 22:28:47 +0000 (UTC) X-Inumbo-ID: 8da07b26-bd50-11e9-a582-eb81d2f18907 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565648928; bh=0bgcGpcMk+jFDiW7wNFctOouGU3NAg189hzDhO+IHyE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Yf5tA+bpmDFM8+lk/pwT2l2CBDePvmsJpV4hnClTCxnwEakY3mRi37Qz8uxvk/4AD Omwz5NFzscrbGYtRppDGvDJuIfzbSUiauo7ANiKWYz1DvGPNR2C6/NSRWnHljLwD0Q fqsOKkJiHdxloze3sEbnjKm5xdr2eGpSbhUt7TL0= From: Stefano Stabellini To: xen-devel@lists.xenproject.org Date: Mon, 12 Aug 2019 15:28:42 -0700 Message-Id: <20190812222844.9636-5-sstabellini@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: Subject: [Xen-devel] [PATCH v5 5/7] xen/arm: handle reserved-memory in consider_modules and dt_unreserved_regions X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Stefano Stabellini , julien.grall@arm.com, sstabellini@kernel.org, Volodymyr_Babchuk@epam.com MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) reserved-memory regions overlap with memory nodes. The overlapping memory is reserved-memory and should be handled accordingly: consider_modules and dt_unreserved_regions should skip these regions the same way they are already skipping mem-reserve regions. Signed-off-by: Stefano Stabellini Acked-by: Julien Grall --- Changes in v4: - code style - add acked-by Changes in v3: - coding style - in-code comments Changes in v2: - fix commit message: full overlap - remove check_reserved_memory - extend consider_modules and dt_unreserved_regions --- xen/arch/arm/setup.c | 53 +++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 50 insertions(+), 3 deletions(-) diff --git a/xen/arch/arm/setup.c b/xen/arch/arm/setup.c index 215746a5c3..bc4082296e 100644 --- a/xen/arch/arm/setup.c +++ b/xen/arch/arm/setup.c @@ -206,6 +206,28 @@ void __init dt_unreserved_regions(paddr_t s, paddr_t e, } } =20 + /* + * i is the current bootmodule we are evaluating across all possible + * kinds. + * + * When retrieving the corresponding reserved-memory addresses + * below, we need to index the bootinfo.reserved_mem bank starting + * from 0, and only counting the reserved-memory modules. Hence, + * we need to use i - nr. + */ + for ( ; i - nr < bootinfo.reserved_mem.nr_banks; i++ ) + { + paddr_t r_s =3D bootinfo.reserved_mem.bank[i - nr].start; + paddr_t r_e =3D r_s + bootinfo.reserved_mem.bank[i - nr].size; + + if ( s < r_e && r_s < e ) + { + dt_unreserved_regions(r_e, e, cb, i + 1); + dt_unreserved_regions(s, r_s, cb, i + 1); + return; + } + } + cb(s, e); } =20 @@ -392,7 +414,7 @@ static paddr_t __init consider_modules(paddr_t s, paddr= _t e, { const struct bootmodules *mi =3D &bootinfo.modules; int i; - int nr_rsvd; + int nr; =20 s =3D (s+align-1) & ~(align-1); e =3D e & ~(align-1); @@ -418,9 +440,9 @@ static paddr_t __init consider_modules(paddr_t s, paddr= _t e, =20 /* Now check any fdt reserved areas. */ =20 - nr_rsvd =3D fdt_num_mem_rsv(device_tree_flattened); + nr =3D fdt_num_mem_rsv(device_tree_flattened); =20 - for ( ; i < mi->nr_mods + nr_rsvd; i++ ) + for ( ; i < mi->nr_mods + nr; i++ ) { paddr_t mod_s, mod_e; =20 @@ -442,6 +464,31 @@ static paddr_t __init consider_modules(paddr_t s, padd= r_t e, return consider_modules(s, mod_s, size, align, i+1); } } + + /* + * i is the current bootmodule we are evaluating, across all + * possible kinds of bootmodules. + * + * When retrieving the corresponding reserved-memory addresses, we + * need to index the bootinfo.reserved_mem bank starting from 0, and + * only counting the reserved-memory modules. Hence, we need to use + * i - nr. + */ + nr +=3D mi->nr_mods; + for ( ; i - nr < bootinfo.reserved_mem.nr_banks; i++ ) + { + paddr_t r_s =3D bootinfo.reserved_mem.bank[i - nr].start; + paddr_t r_e =3D r_s + bootinfo.reserved_mem.bank[i - nr].size; + + if ( s < r_e && r_s < e ) + { + r_e =3D consider_modules(r_e, e, size, align, i + 1); + if ( r_e ) + return r_e; + + return consider_modules(s, r_s, size, align, i + 1); + } + } return e; } #endif --=20 2.17.1 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel