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[192.237.175.120]) by mx.google.com with ESMTPS id 195si2273518wmh.23.2016.03.03.22.18.56 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 03 Mar 2016 22:18:56 -0800 (PST) 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.xen.org with esmtp (Exim 4.84) (envelope-from ) id 1abj3Z-0005mO-Lk; Fri, 04 Mar 2016 06:17:45 +0000 Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xen.org with esmtp (Exim 4.84) (envelope-from ) id 1abj3Y-0005kM-H0 for xen-devel@lists.xen.org; Fri, 04 Mar 2016 06:17:44 +0000 Received: from [193.109.254.147] by server-9.bemta-14.messagelabs.com id CF/F5-02984-78829D65; Fri, 04 Mar 2016 06:17:43 +0000 X-Env-Sender: zhaoshenglong@huawei.com X-Msg-Ref: server-5.tower-27.messagelabs.com!1457072258!28695923!1 X-Originating-IP: [58.251.152.64] X-SpamReason: No, hits=0.0 required=7.0 tests= X-StarScan-Received: X-StarScan-Version: 8.11; banners=-,-,- X-VirusChecked: Checked Received: (qmail 27822 invoked from network); 4 Mar 2016 06:17:42 -0000 Received: from szxga01-in.huawei.com (HELO szxga01-in.huawei.com) (58.251.152.64) by server-5.tower-27.messagelabs.com with RC4-SHA encrypted SMTP; 4 Mar 2016 06:17:42 -0000 Received: from 172.24.1.49 (EHLO szxeml428-hub.china.huawei.com) ([172.24.1.49]) by szxrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DFX12111; Fri, 04 Mar 2016 14:17:07 +0800 (CST) Received: from HGHY1Z002260041.china.huawei.com (10.177.16.142) by szxeml428-hub.china.huawei.com (10.82.67.183) with Microsoft SMTP Server id 14.3.235.1; Fri, 4 Mar 2016 14:16:34 +0800 From: Shannon Zhao To: Date: Fri, 4 Mar 2016 14:15:45 +0800 Message-ID: <1457072152-16128-16-git-send-email-zhaoshenglong@huawei.com> X-Mailer: git-send-email 1.9.0.msysgit.0 In-Reply-To: <1457072152-16128-1-git-send-email-zhaoshenglong@huawei.com> References: <1457072152-16128-1-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=0001.0A020205.56D92864.00FA, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 06e73c821e979de3d02aecb86074e35b Cc: hangaohuai@huawei.com, stefano.stabellini@citrix.com, shannon.zhao@linaro.org, zhaoshenglong@huawei.com Subject: [Xen-devel] [PATCH v5 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" 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