Re: [PATCH] CPU hot swap for 2.4.3 + s390 support

[Peter Rival <frival@zk3.dec.com>]

Has anyone looked into memory hot swap/hot add support?  Especially with
systems with Chipkill coming out, this would be great to support...

 - Pete

Anton Blanchard wrote:

> Hi,
>
> You can find a new version of the hot swap cpu patch at:
>
> http://samba.org/~anton/patches/cpu_hotswap-2.4.3-patch
>
> The version for s390 (you need to first apply the 2.4.3 kernel
> patch available on the IBM s390 Linux website) is at:
>
> http://samba.org/~anton/patches/cpu_hotswap-2.4.3-patch-s390
>
> Many thanks to Heiko Carstens <Heiko.Carstens@de.ibm.com> for adding
> s390 support and fixing a few bugs in the initial implementation.
> You should be able to attach and detach CPUs depending on workload
> in your s390 Linux guest images :)
>
> One of the advantages of this patch is that it removes cpu_logical_map()
> and cpu_number_map() which people had a tendency to get wrong.
>
> It should also be easy to support more than BITS_PER_LONG cpus
> as there is no concept of online_cpu_map any more.
>
> Anton
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/