From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gregory Haskins Subject: Re: [PATCH v3 3/6] vbus: add a "vbus-proxy" bus model Date: Tue, 18 Aug 2009 09:19:35 -0400 Message-ID: <4A8AAA67.8060602@gmail.com> References: <4A8A67ED0200005A000528F5@sinclair.provo.novell.com> <4A8A67F70200005A000528F8@sinclair.provo.novell.com> <4A8A67F70200005A000528F8@sinclair.provo.novell.com> <4A8AA0C6.805@redhat.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigD249D2F1B3945978A4677231" 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 To: Avi Kivity Return-path: In-Reply-To: <4A8AA0C6.805@redhat.com> Sender: kvm-owner@vger.kernel.org List-Id: netdev.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--