From patchwork Wed Mar 30 10:08:06 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Zhao X-Patchwork-Id: 64665 Delivered-To: patch@linaro.org Received: by 10.112.199.169 with SMTP id jl9csp2500658lbc; Wed, 30 Mar 2016 03:10:53 -0700 (PDT) X-Received: by 10.140.217.202 with SMTP id n193mr8977732qhb.101.1459332642744; Wed, 30 Mar 2016 03:10:42 -0700 (PDT) Return-Path: Received: from lists.xenproject.org (lists.xenproject.org. [192.237.175.120]) by mx.google.com with ESMTPS id y68si2987693qhb.112.2016.03.30.03.10.42 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 30 Mar 2016 03:10:42 -0700 (PDT) Received-SPF: neutral (google.com: 192.237.175.120 is neither permitted nor denied by best guess record for domain of xen-devel-bounces@lists.xen.org) client-ip=192.237.175.120; Authentication-Results: mx.google.com; spf=neutral (google.com: 192.237.175.120 is neither permitted nor denied by best guess record for domain of xen-devel-bounces@lists.xen.org) smtp.mailfrom=xen-devel-bounces@lists.xen.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1alD45-0002cS-2V; Wed, 30 Mar 2016 10:09:29 +0000 Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1alD43-0002bi-NZ for xen-devel@lists.xen.org; Wed, 30 Mar 2016 10:09:27 +0000 Received: from [85.158.139.211] by server-2.bemta-5.messagelabs.com id A2/6E-12342-6D5ABF65; Wed, 30 Mar 2016 10:09:26 +0000 X-Env-Sender: zhaoshenglong@huawei.com X-Msg-Ref: server-14.tower-206.messagelabs.com!1459332563!31698974!1 X-Originating-IP: [119.145.14.66] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogMTE5LjE0NS4xNC42NiA9PiA4NTI3\n X-StarScan-Received: X-StarScan-Version: 8.11; banners=-,-,- X-VirusChecked: Checked Received: (qmail 9978 invoked from network); 30 Mar 2016 10:09:26 -0000 Received: from szxga03-in.huawei.com (HELO szxga03-in.huawei.com) (119.145.14.66) by server-14.tower-206.messagelabs.com with RC4-SHA encrypted SMTP; 30 Mar 2016 10:09:26 -0000 Received: from 172.24.1.50 (EHLO SZXEML423-HUB.china.huawei.com) ([172.24.1.50]) by szxrg03-dlp.huawei.com (MOS 4.4.3-GA FastPath queued) with ESMTP id BYZ04468; Wed, 30 Mar 2016 18:09:08 +0800 (CST) Received: from HGHY1Z002260041.china.huawei.com (10.177.16.142) by SZXEML423-HUB.china.huawei.com (10.82.67.154) with Microsoft SMTP Server id 14.3.235.1; Wed, 30 Mar 2016 18:08:58 +0800 From: Shannon Zhao To: Date: Wed, 30 Mar 2016 18:08:06 +0800 Message-ID: <1459332494-18964-14-git-send-email-zhaoshenglong@huawei.com> X-Mailer: git-send-email 1.9.0.msysgit.0 In-Reply-To: <1459332494-18964-1-git-send-email-zhaoshenglong@huawei.com> References: <1459332494-18964-1-git-send-email-zhaoshenglong@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.16.142] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020203.56FBA5C5.013C, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 292b89929e0a76aef760578bd6b545f4 Cc: sstabellini@kernel.org, peter.huangpeng@huawei.com, julien.grall@arm.com, stefano.stabellini@citrix.com, shannon.zhao@linaro.org, zhaoshenglong@huawei.com Subject: [Xen-devel] [PATCH v8 13/21] arm/acpi: Map the new created EFI and ACPI tables to Dom0 X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" From: Shannon Zhao Map the UEFI and ACPI tables which we created to non-RAM space in Dom0. Signed-off-by: Shannon Zhao Reviewed-by: Stefano Stabellini Acked-by: Julien Grall --- v8: update the comments --- xen/arch/arm/domain_build.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index dd4a8ba..ba75d3b 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -1723,6 +1723,28 @@ static int prepare_acpi(struct domain *d, struct kernel_info *kinfo) acpi_create_efi_system_table(d, tbl_add); acpi_create_efi_mmap_table(d, &kinfo->mem, tbl_add); + /* Map the EFI and ACPI tables to Dom0 */ + rc = map_regions_rw_cache(d, + paddr_to_pfn(d->arch.efi_acpi_gpa), + PFN_UP(d->arch.efi_acpi_len), + paddr_to_pfn(virt_to_maddr(d->arch.efi_acpi_table))); + if ( rc != 0 ) + { + printk(XENLOG_ERR "Unable to map EFI/ACPI table 0x%"PRIx64 + " - 0x%"PRIx64" in domain %d\n", + d->arch.efi_acpi_gpa & PAGE_MASK, + PAGE_ALIGN(d->arch.efi_acpi_gpa + d->arch.efi_acpi_len) - 1, + d->domain_id); + return rc; + } + + /* + * Flush the cache for this region, otherwise DOM0 may read wrong data when + * the cache is disabled. + */ + clean_and_invalidate_dcache_va_range(d->arch.efi_acpi_table, + d->arch.efi_acpi_len); + return 0; } #else