From patchwork Thu Nov 21 02:38:37 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Igor Mammedov X-Patchwork-Id: 292930 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 9BE5A2C016B for ; Thu, 21 Nov 2013 13:47:24 +1100 (EST) Received: from localhost ([::1]:58181 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VjKIc-00086V-3W for incoming@patchwork.ozlabs.org; Wed, 20 Nov 2013 21:47:22 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54814) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VjKCk-00072T-P9 for qemu-devel@nongnu.org; Wed, 20 Nov 2013 21:41:24 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VjKCe-000459-Pw for qemu-devel@nongnu.org; Wed, 20 Nov 2013 21:41:18 -0500 Received: from mx1.redhat.com ([209.132.183.28]:11405) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VjKCe-000453-IE for qemu-devel@nongnu.org; Wed, 20 Nov 2013 21:41:12 -0500 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id rAL2f5EJ021514 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 20 Nov 2013 21:41:05 -0500 Received: from dell-pet610-01.lab.eng.brq.redhat.com (dell-pet610-01.lab.eng.brq.redhat.com [10.34.42.20]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id rAL2djG8031356; Wed, 20 Nov 2013 21:41:02 -0500 From: Igor Mammedov To: qemu-devel@nongnu.org Date: Thu, 21 Nov 2013 03:38:37 +0100 Message-Id: <1385001528-12003-17-git-send-email-imammedo@redhat.com> In-Reply-To: <1385001528-12003-1-git-send-email-imammedo@redhat.com> References: <1385001528-12003-1-git-send-email-imammedo@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: peter.maydell@linaro.org, stefanha@redhat.com, mst@redhat.com, chegu_vinod@hp.com, stefanb@linux.vnet.ibm.com, mjt@tls.msk.ru, mdroth@linux.vnet.ibm.com, armbru@redhat.com, vasilis.liaskovitis@profitbricks.com, quintela@redhat.com, kraxel@redhat.com, aliguori@amazon.com, hutao@cn.fujitsu.com, pbonzini@redhat.com, marcel.a@redhat.com, lcapitulino@redhat.com, afaerber@suse.de Subject: [Qemu-devel] [PATCH 16/27] 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 files changed, 1 insertions(+), 0 deletions(-) diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c index e59688b..fb88162 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, ACPI_MEMORY_HOTPLUG_STATUS); } static const MemoryRegionOps ich9_gpe_ops = {