From: "Michael S. Tsirkin" Subject: KVM_ASSIGN_SET_MSIX_NR and KVM_ASSIGN_SET_MSIX_ENTRY should support MSI? Date: Tue, 5 May 2009 13:30:28 +0300 Message-ID: <20090505103028.GA15418@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Avi Kivity , Marcelo Tosatti , Matthew Wilcox , kvm@vger.kernel.org To: Sheng Yang Return-path: Received: from mx2.redhat.com ([66.187.237.31]:48322 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754163AbZEEKb1 (ORCPT ); Tue, 5 May 2009 06:31:27 -0400 Content-Disposition: inline Sender: kvm-owner@vger.kernel.org List-ID: The new KVM_ASSIGN_SET_MSIX_NR and KVM_ASSIGN_SET_MSIX_ENTRY ioctls have been merged for 2.6.30. However, I note that PCI spec allows devices to support multiple vectors with MSI as well (support will be in linux 2.6.30). Even though qemu for now only uses a single vector with MSI, it would seem that it's better to make the kernel/user interface generic straight away rather than add more ioctls later. What do you think? It might not be too late to fix this for 2.6.30. -- MST