From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Peter Anvin" Subject: Re: [PATCH 12/22] virtio_pci: allow duplicate capabilities. Date: Sun, 24 Mar 2013 23:54:38 -0700 Message-ID: <8a7b27e6-11f2-49c8-9ab6-c3f63c9d0460@email.android.com> References: <20130321162636.GF1925@redhat.com> <514B3606.2090503@zytor.com> <20130321170706.GB2994@redhat.com> <514B3EAE.8000707@zytor.com> <20130321171319.GD2994@redhat.com> <20130321174912.GA4161@redhat.com> <514B4957.1070003@zytor.com> <8738vofdyg.fsf@rustcorp.com.au> <20130324131408.GD6601@redhat.com> <514F8B0D.7000400@zytor.com> <20130325065301.GA32581@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20130325065301.GA32581@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: "Michael S. Tsirkin" Cc: virtualization@lists.linux-foundation.org List-Id: virtualization@lists.linuxfoundation.org That might be pushing it, fitting into the 192-byte nonstandard area with everything else that might have to go there... "Michael S. Tsirkin" wrote: >On Sun, Mar 24, 2013 at 04:23:57PM -0700, H. Peter Anvin wrote: >> On 03/24/2013 06:14 AM, Michael S. Tsirkin wrote: >> > >> > Peter is also saying we need a way to >> > do configuration/ISR without memory accesses. >> > >> >> I'm not 100% sure what you mean with ISR here (mostly because virtio >> only has a limited fraction of my attention right now.) > >It's a virtio register used to clear interrupts for when INTA# is used. > >> For configuration, are we dealing with too much data to just put it >in >> configuration space? >> >> -hpa > >All of it? Yes, too big: for virtio-blk it's about 64 bytes already. -- Sent from my mobile phone. Please excuse brevity and lack of formatting.