From patchwork Tue Apr 19 08:38:42 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Xu X-Patchwork-Id: 612037 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3qpzDv0JHKz9syq for ; Tue, 19 Apr 2016 18:48:15 +1000 (AEST) Received: from localhost ([::1]:54086 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1asRKP-00076b-9Y for incoming@patchwork.ozlabs.org; Tue, 19 Apr 2016 04:48:13 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38580) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1asRCL-0007c9-6f for qemu-devel@nongnu.org; Tue, 19 Apr 2016 04:39:54 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1asRCK-0006Ng-A5 for qemu-devel@nongnu.org; Tue, 19 Apr 2016 04:39:53 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56482) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1asRCK-0006Nc-4q for qemu-devel@nongnu.org; Tue, 19 Apr 2016 04:39:52 -0400 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C25D185365; Tue, 19 Apr 2016 08:39:51 +0000 (UTC) Received: from pxdev.xzpeter.org.com (dhcp-14-238.nay.redhat.com [10.66.14.238]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u3J8clBW031338; Tue, 19 Apr 2016 04:39:48 -0400 From: Peter Xu To: qemu-devel@nongnu.org Date: Tue, 19 Apr 2016 16:38:42 +0800 Message-Id: <1461055122-32378-17-git-send-email-peterx@redhat.com> In-Reply-To: <1461055122-32378-1-git-send-email-peterx@redhat.com> References: <1461055122-32378-1-git-send-email-peterx@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v4 16/16] ioapic: register VT-d IEC invalidate notifier X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ehabkost@redhat.com, mst@redhat.com, jasowang@redhat.com, rkrcmar@redhat.com, peterx@redhat.com, alex.williamson@redhat.com, jan.kiszka@web.de, wexu@redhat.com, pbonzini@redhat.com, marcel@redhat.com, imammedo@redhat.com, rth@twiddle.net Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Let IOAPIC the first consumer of VT-d IEC invalidation notifiers. This is only used for split irqchip case, when VT-d receives IR invalidation requests, IOAPIC will be notified to update kernel irq routes. For simplicity, we just update all IOAPIC routes, even if the invalidated entries are not IOAPIC ones. Signed-off-by: Peter Xu --- hw/intc/ioapic.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/hw/intc/ioapic.c b/hw/intc/ioapic.c index d6e88d5..b41ab89 100644 --- a/hw/intc/ioapic.c +++ b/hw/intc/ioapic.c @@ -30,6 +30,7 @@ #include "sysemu/kvm.h" #include "target-i386/cpu.h" #include "hw/i386/apic-msidef.h" +#include "hw/i386/intel_iommu.h" //#define DEBUG_IOAPIC @@ -197,6 +198,14 @@ static void ioapic_update_kvm_routes(IOAPICCommonState *s) #endif } +static void ioapic_iec_notifier(void *private, bool global, + uint32_t index, uint32_t mask) +{ + IOAPICCommonState *s = (IOAPICCommonState *)private; + /* For simplicity, we just update all the routes */ + ioapic_update_kvm_routes(s); +} + void ioapic_eoi_broadcast(int vector) { IOAPICCommonState *s; @@ -330,6 +339,18 @@ static void ioapic_realize(DeviceState *dev, Error **errp) qdev_init_gpio_in(dev, ioapic_set_irq, IOAPIC_NUM_PINS); ioapics[ioapic_no] = s; + +#ifdef CONFIG_KVM + if (kvm_irqchip_is_split()) { + IntelIOMMUState *iommu = vtd_iommu_get(); + if (iommu) { + /* Register this IOAPIC with IOMMU IEC notifier, so that + * when there are IR invalidates, we can be notified to + * update kernel IR cache. */ + vtd_iec_register_notifier(iommu, ioapic_iec_notifier, s); + } + } +#endif } static void ioapic_class_init(ObjectClass *klass, void *data)