Re: [PATCH v2 0/1] pseries/hotplug: Change the default behaviour of cede_offline

From: Gautham R Shenoy
Date: Tue Oct 29 2019 - 07:13:34 EST

Hello Nathan,

On Fri, Oct 25, 2019 at 06:03:26PM -0500, Nathan Lynch wrote:
> "Gautham R. Shenoy" <ego@xxxxxxxxxxxxxxxxxx> writes:
> > This is the v2 of the fix to change the default behaviour of
> > cede_offline.
> OK, but why keep the cede offline behavior at all? Can we remove it? I
> think doing so would allow us to remove all the code that temporarily
> onlines threads for partition migration.

May be I am missing something. But don't we want all the CPUs to come
online and execute the H_JOIN hcall before performing partition
migration? How will this change whether the offlined CPUs are in
H_CEDE or rtas-stop-self?

Thanks and Regards