Re: Linux hot swap support

From: Greg KH (
Date: Wed Sep 18 2002 - 17:12:27 EST

On Wed, Sep 18, 2002 at 05:51:30PM -0400, Bloch, Jack wrote:
> Thanks for the help, but a generic question. If my HW has a hotswap
> controller (theoretically), I do not need any thrird party SW to handle the
> hot swap insert/remove. Linux 2.4.18-3 Kernel should support this correct?

The kernel will support this, yes, but you need to run some kind of
userspace software to turn on or off slots. Or if you have hardware
that recognizes that the power needs to be removed or applied (through a
latch on the slot), it could all be handled with no user interaction at

> I should just run /sbin/hotplug pci on start up.

No, the kernel runs /sbin/hotplug when it sees a new pci device, or when
one is removed. A user never runs it on their own.

Hope this helps,

greg k-h
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