From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:50459) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RI0V5-0004qV-PS for qemu-devel@nongnu.org; Sun, 23 Oct 2011 12:02:16 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RI0V4-0001or-Cr for qemu-devel@nongnu.org; Sun, 23 Oct 2011 12:02:15 -0400 Received: from fmmailgate05.web.de ([217.72.192.243]:60257) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RI0V4-0001on-24 for qemu-devel@nongnu.org; Sun, 23 Oct 2011 12:02:14 -0400 Message-ID: <4EA43A22.6030002@web.de> Date: Sun, 23 Oct 2011 18:00:34 +0200 From: Jan Kiszka MIME-Version: 1.0 References: <1318989353-5576-1-git-send-email-pingfank@linux.vnet.ibm.com> <4EA436A6.4050702@web.de> In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig4F15781A735C0F13C219D6CA" Sender: jan.kiszka@web.de Subject: Re: [Qemu-devel] [PATCH 1/1] Introduce a new bus "ICC" to connect APIC List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Blue Swirl Cc: aliguori@us.ibm.com, pingfank@linux.vnet.ibm.com, qemu-devel@nongnu.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig4F15781A735C0F13C219D6CA Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 2011-10-23 17:54, Blue Swirl wrote: > On Sun, Oct 23, 2011 at 15:45, Jan Kiszka wrote: >> On 2011-10-23 14:40, Blue Swirl wrote: >>> I'm not sure that a full bus is needed for now, even if it could matc= h >>> real HW better, since the memory API already provides the separation >>> needed. Perhaps this would be needed later to make IRQs per-CPU also,= >>> or to put IOAPIC also to the bus? >> >> The ICC interconnects LAPICs and IOAPICs. >=20 > But not between CPU core and its LAPIC? Nope, that link is core-internal and has nothing to do with the ICC. See e.g. Figure 2-2 of Intel's "MultiProcessor Specification". Jan --------------enig4F15781A735C0F13C219D6CA Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.16 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk6kOiIACgkQitSsb3rl5xRdCQCfWZ+/HzyiiFWjWQ0LM527gK0L qZEAnj/aNFaSvnR0vIuIff7c0djJ3t/d =Q2H4 -----END PGP SIGNATURE----- --------------enig4F15781A735C0F13C219D6CA--