SMP support for Linux with up to 16 processors using the Intel MP
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SMP support for Linux with up to 16 processors using the Intel MP
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specification.
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specification.
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WARNING:
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WARNING:
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This is experimental. Back up your disks first. Experience is that
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This is experimental. Back up your disks first. Experience is that
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it is basically stable in its current (inefficient form).
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it is basically stable in its current (inefficient form).
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To fix:
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To fix:
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o Fix sys_idle to exit/enter kernel state and do hlt's.
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o Fix sys_idle to exit/enter kernel state and do hlt's.
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o Fix scheduler decisions to reschedule. Per cpu reschedule ?
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o Fix scheduler decisions to reschedule. Per cpu reschedule ?
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o Clean up message pass.
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o Clean up message pass.
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o Test for B stepping processors.
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o Test for B stepping processors.
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o Clean up processor specific/independent split.
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o Clean up processor specific/independent split.
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o Document it all. [PARTLY DONE]
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o Document it all. [PARTLY DONE]
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o Halt other CPU's on reset/panic doesn't always work.
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o Halt other CPU's on reset/panic doesn't always work.
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o Don't waste page at 4K - don't need it now.(watch the GDT code).
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o Don't waste page at 4K - don't need it now.(watch the GDT code).
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o Dump bootup pages once booted somehow.
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o Dump bootup pages once booted somehow.
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o Clean up warnings/volatiles.
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o Clean up warnings/volatiles.
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o Fix load_TR() for non contiguous processor ids
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o Fix load_TR() for non contiguous processor ids
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o Iterate over the slave timer requests if one is lost (keep a count per cpu)
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o Iterate over the slave timer requests if one is lost (keep a count per cpu)
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o Distribute IRQs (locking present just needs the 82489 to be asked
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o Distribute IRQs (locking present just needs the 82489 to be asked
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nicely).
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nicely).
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o 486 startup code.
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o 486 startup code.
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o How to handle mixed FPU/non FPU processors.
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o How to handle mixed FPU/non FPU processors.
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