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SubjectRE: 2.6.0-test2 on Dell PE2650, ACPI_HT_ONLY strangeness
Brown, Len writes:
> You're right.
>
> This was an ill-fated attempt at backwards compatibility.
> I removed acpismp=force in an ACPI cleanup a short time ago, and it
> should
> hit the tree via the ACPI maintainer after Andy returns from vacation.

Great! Thanks.

/Mikael

>
> Cheers,
> -Len
>
> > -----Original Message-----
> > From: Mikael Pettersson [mailto:mikpe@csd.uu.se]
> > Sent: Wednesday, August 06, 2003 10:40 AM
> > To: linux-kernel@vger.kernel.org
> > Subject: 2.6.0-test2 on Dell PE2650, ACPI_HT_ONLY strangeness
> >
> >
> > Before upgrading our PowerEdge 2650 (dual HT Xeons, Tigon3,
> > aic7899, workspace on sw raid5 over 4 disks, ext3) to RH9,
> > I gave 2.6.0-test2 a spin. Worked fine, except for one thing.
> >
> > In 2.4, CONFIG_SMP automatically uses acpitable.c to detect
> > secondary threads via the MADT (since MPS doesn't handle them).
> >
> > In 2.6.0-test2, with CONFIG_SMP and CONFIG_ACPI_HT_ONLY, this
> > doesn't happen, _unless_ I also pass acpismp=force on the command
> > line. Without acpismp=force, it only finds two CPUs.
> >
> > The logic in arch/i386/kernel/setup.c, which defaults acpi to
> > disabled if HT_ONLY is chosen, seems backwards. Surely if I
> > configure HT_ONLY it's because I want to use it, no?
> >
> > /Mikael
> > -
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