On Monday, 24 September 2007 16:23, Thomas Gleixner wrote:
quoted text
> On Mon, 2007-09-24 at 15:52 +0200, Rafael J. Wysocki wrote:
> > > > > So I really wonder, why noacpitimer on the kernel command line makes any
> > > > > difference. I'm confused.
> > > > 
> > > > \metoo
> > > > 
> > > > Well, it was probably read as "noacpi". :-)
> > > 
> > > Hmm, ACPI is in the log all over the place.
> > 
> > Well, "noacpi" seems to be a synonym for "pci=noacpi".
> > 
> > Anyway, it causes acpi_disable_pci() to be executed, which according to
> > Documentation/kernel-parameters.txt means "Do not use ACPI for IRQ routing or
> > for PCI scanning" (it works like this on x86_64 too, although the doc says it's
> > x86_32-specific).
> 
> Hrm. The local apic timer calibration does not use anything which is
> related to interrupts, but if we use the local APIC timer we switch off
> PIT.
> 
> Can you boot Linus latest (w/o hrt patches) and add "apicmaintimer" to
> the kernel command line please ?

Works, dmesg attached.

Greetings,
Rafael