From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [RFC PATCH 4/5] APIC/IOAPIC EOI callback Date: Sun, 11 Jul 2010 21:14:11 +0300 Message-ID: <4C3A09F3.8010304@redhat.com> References: <20100711180910.20121.93313.stgit@localhost6.localdomain6> <20100711180936.20121.35376.stgit@localhost6.localdomain6> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org, qemu-devel@nongnu.org, pugs@cisco.com, chrisw@redhat.com, mst@redhat.com To: Alex Williamson Return-path: Received: from mx1.redhat.com ([209.132.183.28]:6982 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753998Ab0GKSOR (ORCPT ); Sun, 11 Jul 2010 14:14:17 -0400 In-Reply-To: <20100711180936.20121.35376.stgit@localhost6.localdomain6> Sender: kvm-owner@vger.kernel.org List-ID: On 07/11/2010 09:09 PM, Alex Williamson wrote: > For device assignment, we need to know when the VM writes an end > of interrupt to the APIC, which allows us to de-assert the interrupt > line and clear the DisINTx bit. Add a new wrapper for ioapic > generated interrupts with a callback on eoi and create an interface > for drivers to be notified on eoi. > You aren't going to get this with kvm's in-kernel irqchip, so we need a new interface there. -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.