Re: Linux 2.5 / 2.6 TODO (preliminary)

From: Gregory Maxwell (
Date: Wed May 31 2000 - 23:31:04 EST

On Wed, 31 May 2000, Kenneth C. Arnold wrote:

> mount cpu2). But can you really hot-swap CPUs just by not scheduling
> any processes to them? It seems like you'd need to do some BIOS stuff
> first (I don't have an SMP system, so I don't know this stuff).

Some hardware supports it (We're talking Starfire level here).. But I
really don't see the use: How many times has a CPU failed on you? Okay,
maby once... Now.. How many times did it fail with warning and not just
randomly corrupt kernel structures.. Exactly. :)

I don't think that Linux currently supports any SMPs with asymetric
clocks, so it wouldn't be useful there..

About the only think I can think of is turning off CPUs on a SMP
laptop for powermanagement.. :P So unless someone from transmeta speaks
up about a quad cpu laptop this just sounds like a feature looking for a
need. (i.e. worthless cruft)

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