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Date: Sat, 21 May 2011 12:03:35 +0930 From: Rusty Russell <rusty@...tcorp.com.au> To: "Michael S. Tsirkin" <mst@...hat.com>, linux-kernel@...r.kernel.org Cc: Carsten Otte <cotte@...ibm.com>, Christian Borntraeger <borntraeger@...ibm.com>, linux390@...ibm.com, Martin Schwidefsky <schwidefsky@...ibm.com>, Heiko Carstens <heiko.carstens@...ibm.com>, Shirley Ma <xma@...ibm.com>, lguest@...ts.ozlabs.org, linux-kernel@...r.kernel.org, virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org, linux-s390@...r.kernel.org, kvm@...r.kernel.org, Krishna Kumar <krkumar2@...ibm.com>, Tom Lendacky <tahm@...ux.vnet.ibm.com>, steved@...ibm.com, habanero@...ux.vnet.ibm.com Subject: Re: [PATCHv2 06/14] virtio: add api for delayed callbacks On Fri, 20 May 2011 02:11:14 +0300, "Michael S. Tsirkin" <mst@...hat.com> wrote: > Add an API that tells the other side that callbacks > should be delayed until a lot of work has been done. > Implement using the new event_idx feature. > > Note: it might seem advantageous to let the drivers > ask for a callback after a specific capacity has > been reached. However, as a single head can > free many entries in the descriptor table, > we don't really have a clue about capacity > until get_buf is called. The API is the simplest > to implement at the moment, we'll see what kind of > hints drivers can pass when there's more than one > user of the feature. > > Signed-off-by: Michael S. Tsirkin <mst@...hat.com> Yes, I've applied this (and the next one which uses it in virtio_net), despite my reservations about the API. But that is fixable... Thanks, Rusty. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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