From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: Re: [PATCH 16/22] virtio_pci: use separate notification offsets for each vq. Date: Wed, 27 Mar 2013 13:26:44 +0200 Message-ID: <20130327112643.GF24243@redhat.com> References: <1363854584-25795-1-git-send-email-rusty@rustcorp.com.au> <1363854584-25795-17-git-send-email-rusty@rustcorp.com.au> <20130321101300.GA30493@redhat.com> <87wqt0du2e.fsf@rustcorp.com.au> <20130324201910.GA31631@redhat.com> <8738vjer43.fsf@rustcorp.com.au> <20130326193911.GA19251@redhat.com> <87ip4d4sef.fsf@rustcorp.com.au> <79aede60-5692-4d27-9cfa-7b5fbf96b987@email.android.com> <51525A03.1010906@zytor.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <51525A03.1010906@zytor.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: "H. Peter Anvin" Cc: virtualization@lists.linux-foundation.org List-Id: virtualization@lists.linuxfoundation.org On Tue, Mar 26, 2013 at 07:31:31PM -0700, H. Peter Anvin wrote: > On 03/26/2013 05:22 PM, H. Peter Anvin wrote: > > I would say let it be undefined... in most cases the host will know what device(s) will matter; e.g. if the guest is ppc no point in providing an I/O BAR. > > For pluggable physical devices, though, both should be provided. > > -hpa Yes but what Rusty asked, is whether we should make the memory BAR optional. > -- > H. Peter Anvin, Intel Open Source Technology Center > I work for Intel. I don't speak on their behalf.