Red Hat Bugzilla – Bug 169697
SMP kernel builds enable incompatible APM support
Last modified: 2007-11-30 17:11:14 EST
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User-Agent: Opera/8.5 (X11; Linux i686; U; en)
Description of problem:
This is a request, not a bug report:
It is well known that Linux Advanced Power Management (APM) is incompatible with
SMP support. That's why the kernel disables APM support at boot time. So why
is RedHat/Fedora building SMP kernels with APM enabled?
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.Boot SMP kernel
2.Note logged message stating that APM is being disabled
Actual Results: Logged messages at boot time:
kernel: apm: BIOS version 1.2 Flags 0x07 (Driver version 1.16ac)
kernel: apm: disabled - APM is not SMP safe.
Expected Results: Kernels should not be built with incompatible options.
In future SMP kernel builds, please do not waste memory by building the unusable
APM support. Thank you.
it's needed for power-off on smp systems without acpi.