Re: [PATCH 58/76] idle, x86: Allow off-lined CPU to enter deeper C states

From: Tony Luck
Date: Mon Apr 02 2012 - 13:25:26 EST


>> +       while (1) {
>> +
>> +               if (cx->entry_method == ACPI_CSTATE_HALT)
>> +                       halt();

What's the intent here? I think that I can just set up a function pointer
named "halt" on ia64 and point it to my cpu_halt() function (which looks
for the deepest C-state, and then calls PAL to enter it. Is that equivalent
to what the x86 "halt()" function does?

-Tony
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