From mboxrd@z Thu Jan 1 00:00:00 1970 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 From: Igor Mammedov 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> Subject: [Qemu-devel] [PATCH 05/11] acpi: ich9: allow guest to clear SCI rised by GPE List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org 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 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 = { -- 1.8.3.1