Re: 4.99.73/amd64, ichlpcib and speedstep

["Jonathan A. Kollasch" <jakllsch%kollasch.net@localhost>]

On Tue, Oct 28, 2008 at 11:07:55PM +0100, Joel Carnat wrote:
> I installed 4.99.73/amd64 and xen(kernel|tools)33 from pkgsrc-2008Q3,
> booted it from boot.cfg and tada... no machdep.est available.
> 
> Booting dom0 says:
> ichlpcib0 at pci0 dev 31 function 0
> ichlpcib0: vendor 0x8086 product 0x2815 (rev. 0x02)
> 
> Booting GENERIC says:
> ichlpcib0 at pci0 dev 31 function 0
> ichlpcib0: vendor 0x8086 product 0x2815 (rev. 0x02)
> timecounter: Timecounter "ichlpcib0" frequency 3579545 Hz quality 1000
> ichlpcib0: 24-bit timer
> ichlpcib0: TCO (watchdog) timer configured.
> 
> Full dmesges are there
> http://www.tumfatig.net/dmesg/Dell%20Latitude%20D630/NetBSD%204.99.73/ in
> case it helps.

ichlpcib(4) has nothing to do with Enhanced Speedstep.

> 
> Is there a tweak/hope to get speedstep on xen0 or is it still not planned
> (yet) ?

Not at this point.  I think the issue is that MSRs (used for EST, among
other things) can only be accessed at the highest privilege level, and
the dom0 runs at a lower level, so the hypervisor must mediate access
to MSRs.  I think it was only recently that Xen even gained the ability
to manipulate MSRs for a dom0.  It'll happen when someone wants it to
happen. ;-)

        Jonathan Kollasch