From patchwork Fri Dec 13 16:22:10 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Igor Mammedov X-Patchwork-Id: 301134 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id E21FF2C009E for ; Sat, 14 Dec 2013 05:21:57 +1100 (EST) Received: from localhost ([::1]:44160 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VrXN4-00019z-Si for incoming@patchwork.ozlabs.org; Fri, 13 Dec 2013 13:21:54 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49244) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VrWHa-0004pP-QY for qemu-devel@nongnu.org; Fri, 13 Dec 2013 12:12:16 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VrWHU-0008Q1-Ra for qemu-devel@nongnu.org; Fri, 13 Dec 2013 12:12:10 -0500 Received: from mx1.redhat.com ([209.132.183.28]:49580) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VrWHU-0008Pv-Hn for qemu-devel@nongnu.org; Fri, 13 Dec 2013 12:12:04 -0500 Received: from int-mx12.intmail.prod.int.phx2.redhat.com (int-mx12.intmail.prod.int.phx2.redhat.com [10.5.11.25]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id rBDGMZBX004750 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 13 Dec 2013 11:22:36 -0500 Received: from thinkpad.redhat.com (vpn-229-8.phx2.redhat.com [10.3.229.8]) by int-mx12.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id rBDGMGiW029326; Fri, 13 Dec 2013 11:22:32 -0500 From: Igor Mammedov To: qemu-devel@nongnu.org Date: Fri, 13 Dec 2013 17:22:10 +0100 Message-Id: <1386951736-929-6-git-send-email-imammedo@redhat.com> In-Reply-To: <1386951736-929-1-git-send-email-imammedo@redhat.com> References: <1386951736-929-1-git-send-email-imammedo@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.25 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: stefanha@redhat.com, mst@redhat.com, hutao@cn.fujitsu.com, jjherne@us.ibm.com, brogers@suse.com, kraxel@redhat.com, aliguori@amazon.com, kaneshige.kenji@jp.fujitsu.com, chen.fan.fnst@cn.fujitsu.com, pbonzini@redhat.com, lersek@redhat.com Subject: [Qemu-devel] [PATCH 05/11] acpi: ich9: allow guest to clear SCI rised by GPE X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org it fixes IRQ storm since guest isn't able to lower SCI IRQ after it has been handled when it clears GPE event. Signed-off-by: Igor Mammedov --- hw/acpi/ich9.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c index dcdef7c..30f0df8 100644 --- a/hw/acpi/ich9.c +++ b/hw/acpi/ich9.c @@ -61,6 +61,7 @@ static void ich9_gpe_writeb(void *opaque, hwaddr addr, uint64_t val, { ICH9LPCPMRegs *pm = opaque; acpi_gpe_ioport_writeb(&pm->acpi_regs, addr, val); + acpi_update_sci(&pm->acpi_regs, pm->irq); } static const MemoryRegionOps ich9_gpe_ops = {