From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Roessner Subject: Re: Powernow-k8 support Date: Thu, 15 Jun 2006 11:58:55 +0200 Message-ID: <44912F5F.2030906@roessner-net.com> References: <84EA05E2CA77634C82730353CBE3A84303218DD9@SAUSEXMB1.amd.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1718299652==" Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Mime-version: 1.0 Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Keir Fraser Cc: xen-devel@lists.xensource.com, "Langsdorf, Mark" List-Id: xen-devel@lists.xenproject.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --===============1718299652== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig1B8BFA3253949F8E2FC7E298" This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig1B8BFA3253949F8E2FC7E298 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Keir Fraser schrieb: >=20 > On 14 Jun 2006, at 22:43, Langsdorf, Mark wrote: >=20 >> Should I (as the powernow-k8 maintainer) be modifying this >> code as we add new features? Most of it looks pretty safe, >> but the new 2.00.00 driver uses different MSRs, and there >> are other things coming up that will confuse things. >=20 > One thing I'm a bit undecided on is whether MSR emulation is the right > way to go, or whether we should just pull the low-level cpufreq drivers= > verbatim into Xen and then provide access to them via hypercalls. We > could then have a paravirtual cpufreq driver added to Linux. This has > the advantage that we have less new per-cpu-type code to maintain in Xe= n > (we can more easily sync with cpufreq changes in Linux) but it does mea= n > we change more Linux code and we'd want to be a bit careful not to make= > the hypercall interface too Linux specific (or too x86 specific). Has this something to do with the private mail I sent to Keir Fraser? I told him that the powernow-k8 support in dom0 seems to work, while in domUs not. Second was that the shown Bogomips under /proc/cpuinfo never changes from ~4000, even when the CPU was @ 800. Regards Christian --=20 Tel.: 0641-2097252, Mobil: 0171-3611230 PGP: http://www.roessner-net.com/0x6B929997.asc --------------enig1B8BFA3253949F8E2FC7E298 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFEkS9kZzAxnGuSmZcRAhg4AJwO945h++lZN6eSuUHlgtJz48efrgCgk1lO LE/T520yhO7YsnOnGUceJrY= =BlRc -----END PGP SIGNATURE----- --------------enig1B8BFA3253949F8E2FC7E298-- --===============1718299652== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel --===============1718299652==--