From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758920AbZHRNTj (ORCPT ); Tue, 18 Aug 2009 09:19:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758879AbZHRNTj (ORCPT ); Tue, 18 Aug 2009 09:19:39 -0400 Received: from qw-out-2122.google.com ([74.125.92.27]:57309 "EHLO qw-out-2122.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758865AbZHRNTh (ORCPT ); Tue, 18 Aug 2009 09:19:37 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:x-enigmail-version:content-type; b=uUC5IUYjWGMtm9m4m7yvcdl7HHKEpmNiW3gbfpeDPi3A6nnXZNwiQA+Hz81xn0vRwE cu/iPI0JLTZ5sCoKqZ4PUGbDjRUH4j1QPBDjGlzTYSD5Iju7AQVM1/c38NkwNhlNMErr g2ZgbgwecscXFWs2mBq3hREsCAH1yWDaPOUmM= Message-ID: <4A8AAA67.8060602@gmail.com> Date: Tue, 18 Aug 2009 09:19:35 -0400 From: Gregory Haskins User-Agent: Thunderbird 2.0.0.22 (Macintosh/20090605) MIME-Version: 1.0 To: Avi Kivity CC: Gregory Haskins , mingo@elte.hu, alacrityvm-devel@lists.sourceforge.net, mst@redhat.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: [PATCH v3 3/6] vbus: add a "vbus-proxy" bus model References: <4A8A67ED0200005A000528F5@sinclair.provo.novell.com> <4A8A67F70200005A000528F8@sinclair.provo.novell.com> <4A8A67F70200005A000528F8@sinclair.provo.novell.com> <4A8AA0C6.805@redhat.com> In-Reply-To: <4A8AA0C6.805@redhat.com> X-Enigmail-Version: 0.96.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigD249D2F1B3945978A4677231" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigD249D2F1B3945978A4677231 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Avi Kivity wrote: > On 08/18/2009 03:36 PM, Gregory Haskins wrote: >> Yeah, I agree. I am not advocating we expend energy on this now. But= >> my thoughts at the time were that that particular problem can be >> solved at io-setup time with some kind of call to qualify the address.= >> >> Iow: a slow path call with the address would return flags on whether >> iowrite() should do a real io, or a IOoHC. >> =20 >=20 > Yes, it could work, though we'd need somewhere to stow this > information. IIRC Arnd suggested a bit from the address itself. >=20 Yeah, exactly. I think MMIO is particularly challenging because I don't know if there are any bits left to use. But like I said, its a problem for another day IMO. -Greg --------------enigD249D2F1B3945978A4677231 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.11 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkqKqmcACgkQP5K2CMvXmqFNrQCdEsgJJ5do/n7SewSSSI7fleak iqEAni6IUvmvR1VpOsMQp4jM3/KI02XZ =snOs -----END PGP SIGNATURE----- --------------enigD249D2F1B3945978A4677231--