From patchwork Thu Mar 17 09:41:01 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Zhao X-Patchwork-Id: 8609011 Return-Path: X-Original-To: patchwork-xen-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id B46D59F6E1 for ; Thu, 17 Mar 2016 09:50:07 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E4385201CD for ; Thu, 17 Mar 2016 09:50:06 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A5E8D20304 for ; Thu, 17 Mar 2016 09:50:05 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1agUXO-0007Hc-OJ; Thu, 17 Mar 2016 09:48:14 +0000 Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1agUXN-0007G9-9f for xen-devel@lists.xen.org; Thu, 17 Mar 2016 09:48:13 +0000 Received: from [85.158.139.211] by server-15.bemta-5.messagelabs.com id 83/01-06546-C5D7AE65; Thu, 17 Mar 2016 09:48:12 +0000 X-Env-Sender: zhaoshenglong@huawei.com X-Msg-Ref: server-15.tower-206.messagelabs.com!1458208089!21270567!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 30190 invoked from network); 17 Mar 2016 09:48:12 -0000 Received: from szxga03-in.huawei.com (HELO szxga03-in.huawei.com) (119.145.14.66) by server-15.tower-206.messagelabs.com with RC4-SHA encrypted SMTP; 17 Mar 2016 09:48:12 -0000 Received: from 172.24.1.48 (EHLO szxeml432-hub.china.huawei.com) ([172.24.1.48]) by szxrg03-dlp.huawei.com (MOS 4.4.3-GA FastPath queued) with ESMTP id BYG52641; Thu, 17 Mar 2016 17:42:17 +0800 (CST) Received: from HGHY1Z002260041.china.huawei.com (10.177.16.142) by szxeml432-hub.china.huawei.com (10.82.67.209) with Microsoft SMTP Server id 14.3.235.1; Thu, 17 Mar 2016 17:41:44 +0800 From: Shannon Zhao To: Date: Thu, 17 Mar 2016 17:41:01 +0800 Message-ID: <1458207668-12012-16-git-send-email-zhaoshenglong@huawei.com> X-Mailer: git-send-email 1.9.0.msysgit.0 In-Reply-To: <1458207668-12012-1-git-send-email-zhaoshenglong@huawei.com> References: <1458207668-12012-1-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=0001.0A020201.56EA7BF9.0104, 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: e1895f21ce024455bd5667f5f5002123 Cc: julien.grall@arm.com, zhaoshenglong@huawei.com, stefano.stabellini@citrix.com, shannon.zhao@linaro.org, peter.huangpeng@huawei.com Subject: [Xen-devel] [PATCH v6 15/22] arm/acpi: Permit access all Xen unused SPIs for 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" X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Shannon Zhao Permit access all Xen unused SPIs for Dom0 except the interrupts that Xen uses. Then when Dom0 configures the interrupt, it could set the interrupt type and route it to Dom0. Signed-off-by: Shannon Zhao Reviewed-by: Stefano Stabellini --- xen/arch/arm/domain_build.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index 6726e45..1e5ee0e 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -1359,6 +1359,33 @@ static int prepare_dtb(struct domain *d, struct kernel_info *kinfo) #ifdef CONFIG_ACPI #define ACPI_DOM0_FDT_MIN_SIZE 4096 +static int acpi_permit_spi_access(struct domain *d) +{ + int i, res; + struct irq_desc *desc; + + /* Here just permit Dom0 to access the SPIs which Xen doesn't use. Then when + * Dom0 configures the interrupt, set the interrupt type and route it to + * Dom0. + */ + for( i = NR_LOCAL_IRQS; i < vgic_num_irqs(d); i++ ) + { + desc = irq_to_desc(i); + if( desc->action != NULL) + continue; + + res = irq_permit_access(d, i); + if ( res ) + { + printk(XENLOG_ERR "Unable to permit to dom%u access to IRQ %u\n", + d->domain_id, i); + return res; + } + } + + return 0; +} + static int make_chosen_node(const struct kernel_info *kinfo, struct membank tbl_add[]) { @@ -1849,6 +1876,10 @@ static int prepare_acpi(struct domain *d, struct kernel_info *kinfo) if ( rc != 0 ) return rc; + rc = acpi_permit_spi_access(d); + if ( rc != 0 ) + return rc; + return 0; } #else