From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757635Ab1I2USf (ORCPT ); Thu, 29 Sep 2011 16:18:35 -0400 Received: from rcsinet15.oracle.com ([148.87.113.117]:45038 "EHLO rcsinet15.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757409Ab1I2US3 (ORCPT ); Thu, 29 Sep 2011 16:18:29 -0400 From: Konrad Rzeszutek Wilk To: linux-kernel@vger.kernel.org, rjw@sisk.pl, tglx@linutronix.de, hpa@zytor.com, x86@kernel.org, len.brown@intel.com, joseph.cihula@intel.com, shane.wang@intel.com, xen-devel@lists.xensource.com, linux-pm@lists.linux-foundation.org, tboot-devel@lists.sourceforge.net, linux-acpi@vger.kernel.org, liang.tang@oracle.com, ke.yu@intel.com, kevin.tian@intel.com, jeremy@goop.org Cc: Konrad Rzeszutek Wilk Subject: [PATCH 4/8] xen: Utilize the restore_msi_irqs hook. Date: Thu, 29 Sep 2011 16:16:50 -0400 Message-Id: <1317327414-24072-5-git-send-email-konrad.wilk@oracle.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1317327414-24072-1-git-send-email-konrad.wilk@oracle.com> References: <1317327414-24072-1-git-send-email-konrad.wilk@oracle.com> X-Source-IP: rtcsinet21.oracle.com [66.248.204.29] X-CT-RefId: str=0001.0A090209.4E84D244.0088,ss=1,re=0.000,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org to make a hypercall to restore the vectors in the MSI/MSI-X configuration space. Signed-off-by: Konrad Rzeszutek Wilk --- arch/x86/pci/xen.c | 12 ++++++++++++ include/xen/interface/physdev.h | 7 +++++++ 2 files changed, 19 insertions(+), 0 deletions(-) diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c index 1017c7b..9eea4ed 100644 --- a/arch/x86/pci/xen.c +++ b/arch/x86/pci/xen.c @@ -304,6 +304,17 @@ static int xen_initdom_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) out: return ret; } + +static void xen_initdom_restore_msi_irqs(struct pci_dev *dev, int irq) +{ + int ret = 0; + struct physdev_restore_msi restore; + + restore.bus = dev->bus->number; + restore.devfn = dev->devfn; + ret = HYPERVISOR_physdev_op(PHYSDEVOP_restore_msi, &restore); + WARN(ret && ret != -ENOSYS, "restore_msi -> %d\n", ret); +} #endif static void xen_teardown_msi_irqs(struct pci_dev *dev) @@ -426,6 +437,7 @@ int __init pci_xen_initial_domain(void) #ifdef CONFIG_PCI_MSI x86_msi.setup_msi_irqs = xen_initdom_setup_msi_irqs; x86_msi.teardown_msi_irq = xen_teardown_msi_irq; + x86_msi.restore_msi_irqs = xen_initdom_restore_msi_irqs; #endif xen_setup_acpi_sci(); __acpi_register_gsi = acpi_register_gsi_xen; diff --git a/include/xen/interface/physdev.h b/include/xen/interface/physdev.h index 534cac8..44aefa9 100644 --- a/include/xen/interface/physdev.h +++ b/include/xen/interface/physdev.h @@ -144,6 +144,13 @@ struct physdev_manage_pci { uint8_t devfn; }; +#define PHYSDEVOP_restore_msi 19 +struct physdev_restore_msi { + /* IN */ + uint8_t bus; + uint8_t devfn; +}; + #define PHYSDEVOP_manage_pci_add_ext 20 struct physdev_manage_pci_ext { /* IN */ -- 1.7.4.1