Re: [patch] slab: add memory hotplug support

Christoph Lameter
2010-03-05T14:11:27Z

On Fri, 5 Mar 2010, Anca Emanuel wrote:

> Dumb question: it is possible to hot remove the (bad) memory ? And add
> an good one ?

Under certain conditions this is possible. If the bad memory was modified
then you have a condition that requires termination of all processes that
are using the memory. If its the kernel then you need to reboot.

If the memory contains a page from disk then the memory can be moved
elsewhere.

If you can clean up a whole range like that then its possible to replace
the memory.