From mboxrd@z Thu Jan 1 00:00:00 1970 From: Asias He Subject: Re: [PATCH 2/3 V2] kvm tools: Add support for multiple virtio-blk Date: Wed, 04 May 2011 22:40:17 +0800 Message-ID: <4DC16551.30100@gmail.com> References: <1304516717-24512-1-git-send-email-levinsasha928@gmail.com> <1304516717-24512-3-git-send-email-levinsasha928@gmail.com> <20110504135616.GA11941@elte.hu> <4DC1636C.3040400@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: Ingo Molnar , Sasha Levin , penberg@kernel.org, kvm@vger.kernel.org, gorcunov@gmail.com, prasadjoshi124@gmail.com To: Avi Kivity Return-path: Received: from mail-pz0-f46.google.com ([209.85.210.46]:48806 "EHLO mail-pz0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753167Ab1EDOlg (ORCPT ); Wed, 4 May 2011 10:41:36 -0400 Received: by pzk9 with SMTP id 9so524033pzk.19 for ; Wed, 04 May 2011 07:41:35 -0700 (PDT) In-Reply-To: <4DC1636C.3040400@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On 05/04/2011 10:32 PM, Avi Kivity wrote: > On 05/04/2011 04:56 PM, Ingo Molnar wrote: >> Also, the IRQs used by kvm should be enumerated in an include file in >> a single >> place, with ranges allocated for specific purposes, otherwise we'll >> quickly >> lose track of them. > > You'll also quickly run out of interrupts. To get lots of devices you > can use level-triggered interrupts (this is really how the device is > meant to be used, but is slow) or switch to MSI-X (fast but > significantly more code needed). Sure, we will switch to MSI-X soon. -- Best Regards, Asias He