On Wed, 2014-02-19 at 00:26 +0100, Rafael J. Wysocki wrote: > On Tuesday, February 18, 2014 11:28:29 AM Matthew Garrett wrote: > > > > The ACPI IPMI driver implements IPMI operation region support for the ACPI > > core. Systems that declare ACPI operation regions may reference them at any > > time, including during kernel initialisation. These accesses will fail > > unless the ACPI IPMI driver is present, and undesirable system behaviour > > may result. Set the default to Y in order to encourage distributions and > > users to configure kernels to avoid awkward surprises. > > Do you have any examples of problems caused by that or is this just > theoretical > at the moment?
For example, if you load the ACPI power meter driver before you've installed the ACPI IPMI driver you'll typically get failures (most vendors implement it via IPMI). -- Matthew Garrett <matthew.garr...@nebula.com>
