From mboxrd@z Thu Jan 1 00:00:00 1970 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 From: Igor Mammedov 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> Subject: [Qemu-devel] [PATCH 16/27] 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: 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 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 = { -- 1.7.1