Warner Losh <[EMAIL PROTECTED]> wrote:
>Mike Smith writes:
>>
>> If I remember from a discussion with John Baldwin, the reason we
>> don't do this (yet) is that HLT only wakes up when you take an
>> interrupt, and there are cases where we can't guarantee that we'll
>> take an interrupt in order to get us out of the HLT.
>
>I thought that's what the timer interrupts were for... We can't
>guarantee that we'll get one? That seems very serious to me.
The problem is that one cpu may wich to schedule a process to run on
the idle cpu, but it can't because the idle cpu is halted and won't
wake up until the next irq.
Tony.
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