From mboxrd@z Thu Jan 1 00:00:00 1970 From: Evgeniy Polyakov Subject: Re: QEMU PIC indirection patch for in-kernel APIC work Date: Tue, 10 Apr 2007 12:07:29 +0400 Message-ID: <20070410080729.GB16621@2ka.mipt.ru> References: <4614098F.2030307@us.ibm.com> <20070404212103.GA19026@elte.hu> <1175728768.12230.593.camel@localhost.localdomain> <4614A294.3000607@qumranet.com> <1175821357.12230.642.camel@localhost.localdomain> <46187F4E.1080807@qumranet.com> <1176087018.11664.65.camel@localhost.localdomain> <4619E6DC.3010804@qumranet.com> <1176111984.11664.90.camel@localhost.localdomain> <461A41CA.9080201@qumranet.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, netdev To: Avi Kivity Return-path: Content-Disposition: inline In-Reply-To: <461A41CA.9080201-atKUWr5tajBWk0Htik3J/w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: netdev.vger.kernel.org On Mon, Apr 09, 2007 at 04:38:18PM +0300, Avi Kivity (avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org) wrote: > >But I don't get this "we can enhance the kernel but not userspace" vibe > >8( > > > > I've been waiting for network aio since ~2003. If it arrives in the > next few days, I'm all for it; much more than kvm can use it > profitably. But I'm not going to write that interface myself. Hmm, you missed at least two implementations of network aio in the previous year, and now with syslets we can have third one. But it looks from this discussion, that it will not prevent from changing in-kernel driver - place a hook into skb allocation path and allocate data from opposing memory - get pages from another side and put them into fragments, then copy headers into skb->data. -- Evgeniy Polyakov ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV