Re: [v2] powerpc/rtas: Fix a potential race between CPU-Offline & Migration

2018-10-14 Thread Michael Ellerman
On Mon, 2018-10-01 at 10:40:39 UTC, "Gautham R. Shenoy" wrote: > From: "Gautham R. Shenoy" > > Live Partition Migrations require all the present CPUs to execute the > H_JOIN call, and hence rtas_ibm_suspend_me() onlines any offline CPUs > before initiating the migration for this purpose. > > The

Re: [PATCH v2] powerpc/rtas: Fix a potential race between CPU-Offline & Migration

2018-10-01 Thread Nathan Fontenot
On 10/01/2018 05:40 AM, Gautham R. Shenoy wrote: > From: "Gautham R. Shenoy" > > Live Partition Migrations require all the present CPUs to execute the > H_JOIN call, and hence rtas_ibm_suspend_me() onlines any offline CPUs > before initiating the migration for this purpose. > > The commit 85a88c

[PATCH v2] powerpc/rtas: Fix a potential race between CPU-Offline & Migration

2018-10-01 Thread Gautham R. Shenoy
From: "Gautham R. Shenoy" Live Partition Migrations require all the present CPUs to execute the H_JOIN call, and hence rtas_ibm_suspend_me() onlines any offline CPUs before initiating the migration for this purpose. The commit 85a88cabad57 ("powerpc/pseries: Disable CPU hotplug across migrations