From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Mga6g-0007tu-Gv for qemu-devel@nongnu.org; Thu, 27 Aug 2009 04:13:18 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1Mga6c-0007mz-2p for qemu-devel@nongnu.org; Thu, 27 Aug 2009 04:13:18 -0400 Received: from [199.232.76.173] (port=48977 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Mga6b-0007ms-UK for qemu-devel@nongnu.org; Thu, 27 Aug 2009 04:13:13 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48191) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1Mga6b-0006tE-Id for qemu-devel@nongnu.org; Thu, 27 Aug 2009 04:13:13 -0400 Message-ID: <4A964013.6000005@redhat.com> Date: Thu, 27 Aug 2009 10:13:07 +0200 From: Gerd Hoffmann MIME-Version: 1.0 Subject: Re: [Qemu-devel] [PATCH 2/2] Route IOAPIC interrupts via ISA bus References: <1249836296-13288-1-git-send-email-avi@redhat.com> <1249836296-13288-3-git-send-email-avi@redhat.com> <4A955CB4.4080205@redhat.com> <4A955D6A.9060804@redhat.com> <4A95633E.7060703@redhat.com> <4A961161.5030906@redhat.com> <4A96375D.1070005@redhat.com> <4A963C66.6040300@redhat.com> In-Reply-To: <4A963C66.6040300@redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Avi Kivity Cc: qemu-devel@nongnu.org On 08/27/09 09:57, Avi Kivity wrote: >> What is needed on the guest side? Looks like even 2.6.30 doesn't use >> MSI for virtio-net ... > > virtio msi support was merged in 2.6.31. For e1000, guest support is > presumably there, just need to wire it into the device. lspci shows MSI (not MSI-X) capability for the e1000 in my laptop. It is not enabled. dmesg has this line though: 0000:02:00.0: 0000:02:00.0: Failed to initialize MSI interrupts. Falling back to legacy interrupts. so the driver at least tried to enable MSI ... cheers Gerd