On Sun, 2007-03-04 at 23:13 -0500, Erik Osheim wrote:
> [3] CONFIG_ACPI_SLEEP depends on: !X86_VOYAGER && !X86_VISWS &&
> !IA64_HP_SIM && (IA64 || X86) && ACPI && X86 && (!SMP || SUSPEND_SMP)
> && PM
>
> [4] based on my analysis of [3] and [4], software suspend is
> definitely not possible with SMP enabled. If I could figure out where
> to turn on SUSPEND_SMP then maybe I could try ACPI_SLEEP, but it is
> nowhere to be found and defaults to '=n'.
You can try to what sets SUSPEND_SMP with something like:
find . -name 'Kconfig*' -exec grep 'SUSPEND_SMP' {} \;
at the root of the kernel tree.
I might be able to save you the trouble though -- I'm pretty sure what
you need to get SUSPEND_SMP is to turn on "CPU Hotplug" (suspend just
"unplugs" all but one CPU before suspending to make it SMP-safe).
--
Joseph Fannin
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