Removing acpi.ko support

John Baldwin jhb at freebsd.org
Thu Oct 28 18:15:47 UTC 2010


On Thursday, October 28, 2010 12:57:22 pm Matthew Jacob wrote:
> Will there be still a a way to disable it from the OK prompt?

Yes.  Using 'hint.acpi.0.disabled=1' has always worked to do that and the
'safe mode' menu item will continue to disable ACPI via that tunable (though
for many newer machines disabling ACPI is actually less safe, but that is the
subject of a separate thread).

> On 10/28/2010 9:54 AM, John Baldwin wrote:
> > [ cc'ing acpi@ to be safe, but I think the topic warrants the wider audience
> > of arch@ ]
> >
> > I think we should drop support for having acpi load as a module for i386.  It
> > adds extra complication and hacks to the i386 APIC and interrupt code that are
> > gratuitously different from amd64 as a result.  Originally it was made a
> > module so that GENERIC on i386 did not include ACPI by default but would only
> > use up memory to hold ACPI-related code if the machine supported ACPI.  Now
> > that acpi is part of GENERIC on i386 in 8.0 and later this argument is no
> > longer relevant.  I'd like to remove support for ACPI as a module to remove
> > the various hacks on i386 and reduce differences with amd64.
> >
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-- 
John Baldwin


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