[PATCH AUTOSEL 4.4 06/40] powerpc/pseries: Disable CPU hotplug across migrations

2019-11-09 Thread Sasha Levin
From: Nathan Fontenot [ Upstream commit 85a88cabad57d26d826dd94ea34d3a785824d802 ] When performing partition migrations all present CPUs must be online as all present CPUs must make the H_JOIN call as part of the migration process. Once all present CPUs make the H_JOIN call, one CPU is returned

[PATCH AUTOSEL 4.9 06/66] powerpc/pseries: Disable CPU hotplug across migrations

2019-11-09 Thread Sasha Levin
From: Nathan Fontenot [ Upstream commit 85a88cabad57d26d826dd94ea34d3a785824d802 ] When performing partition migrations all present CPUs must be online as all present CPUs must make the H_JOIN call as part of the migration process. Once all present CPUs make the H_JOIN call, one CPU is returned

[PATCH AUTOSEL 4.14 012/109] powerpc/pseries: Disable CPU hotplug across migrations

2019-11-09 Thread Sasha Levin
From: Nathan Fontenot [ Upstream commit 85a88cabad57d26d826dd94ea34d3a785824d802 ] When performing partition migrations all present CPUs must be online as all present CPUs must make the H_JOIN call as part of the migration process. Once all present CPUs make the H_JOIN call, one CPU is returned

[PATCH AUTOSEL 4.19 030/191] powerpc/pseries: Disable CPU hotplug across migrations

2019-11-09 Thread Sasha Levin
From: Nathan Fontenot [ Upstream commit 85a88cabad57d26d826dd94ea34d3a785824d802 ] When performing partition migrations all present CPUs must be online as all present CPUs must make the H_JOIN call as part of the migration process. Once all present CPUs make the H_JOIN call, one CPU is returned

Re: [PATCH] powerpc/pseries: Disable CPU hotplug across migrations

2018-09-24 Thread Gautham R Shenoy
-- X8- >From acb9eb9f8bb14cf3121aeb0589255cbc31292be7 Mon Sep 17 00:00:00 2001 From: "Gautham R. Shenoy" Date: Tue, 25 Sep 2018 11:01:18 +0530 Subject: [PATCH] powerpc/rtas: Fix a potential race between CPU-Offline & Migration commi

Re: [PATCH] powerpc/pseries: Disable CPU hotplug across migrations

2018-09-24 Thread Michael Ellerman
Gautham R Shenoy writes: > On Mon, Sep 24, 2018 at 05:00:42PM +1000, Michael Ellerman wrote: >> Nathan Fontenot writes: >> > On 09/18/2018 05:32 AM, Gautham R Shenoy wrote: >> >> On Tue, Sep 18, 2018 at 1:05 AM Nathan Fontenot >> >>> diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/r

Re: [PATCH] powerpc/pseries: Disable CPU hotplug across migrations

2018-09-24 Thread Michael Ellerman
Tyrel Datwyler writes: > On 09/24/2018 07:30 AM, Nathan Fontenot wrote: ... >> >> Since we have not been able to re-create the failure with this patch would >> it be ok to pull in this patch while other options are explored? > > I think mpe initially applied this to -next. Not sure if he dropped

Re: [PATCH] powerpc/pseries: Disable CPU hotplug across migrations

2018-09-24 Thread Tyrel Datwyler
On 09/24/2018 07:30 AM, Nathan Fontenot wrote: > On 09/24/2018 03:56 AM, Gautham R Shenoy wrote: >> Hi Michael, >> >> On Mon, Sep 24, 2018 at 05:00:42PM +1000, Michael Ellerman wrote: >>> Nathan Fontenot writes: On 09/18/2018 05:32 AM, Gautham R Shenoy wrote: > Hi Nathan, > On Tue, Se

Re: [PATCH] powerpc/pseries: Disable CPU hotplug across migrations

2018-09-24 Thread Nathan Fontenot
On 09/24/2018 03:56 AM, Gautham R Shenoy wrote: > Hi Michael, > > On Mon, Sep 24, 2018 at 05:00:42PM +1000, Michael Ellerman wrote: >> Nathan Fontenot writes: >>> On 09/18/2018 05:32 AM, Gautham R Shenoy wrote: Hi Nathan, On Tue, Sep 18, 2018 at 1:05 AM Nathan Fontenot wrote:

Re: [PATCH] powerpc/pseries: Disable CPU hotplug across migrations

2018-09-24 Thread Gautham R Shenoy
Hi Michael, On Mon, Sep 24, 2018 at 05:00:42PM +1000, Michael Ellerman wrote: > Nathan Fontenot writes: > > On 09/18/2018 05:32 AM, Gautham R Shenoy wrote: > >> Hi Nathan, > >> On Tue, Sep 18, 2018 at 1:05 AM Nathan Fontenot > >> wrote: > >>> > >>> When performing partition migrations all presen

Re: [PATCH] powerpc/pseries: Disable CPU hotplug across migrations

2018-09-24 Thread Michael Ellerman
Nathan Fontenot writes: > On 09/18/2018 05:32 AM, Gautham R Shenoy wrote: >> Hi Nathan, >> On Tue, Sep 18, 2018 at 1:05 AM Nathan Fontenot >> wrote: >>> >>> When performing partition migrations all present CPUs must be online >>> as all present CPUs must make the H_JOIN call as part of the migrat

Re: [PATCH] powerpc/pseries: Disable CPU hotplug across migrations

2018-09-20 Thread Nathan Fontenot
On 09/18/2018 05:32 AM, Gautham R Shenoy wrote: > Hi Nathan, > On Tue, Sep 18, 2018 at 1:05 AM Nathan Fontenot > wrote: >> >> When performing partition migrations all present CPUs must be online >> as all present CPUs must make the H_JOIN call as part of the migration >> process. Once all present

Re: powerpc/pseries: Disable CPU hotplug across migrations

2018-09-19 Thread Michael Ellerman
On Mon, 2018-09-17 at 19:14:02 UTC, Nathan Fontenot wrote: > When performing partition migrations all present CPUs must be online > as all present CPUs must make the H_JOIN call as part of the migration > process. Once all present CPUs make the H_JOIN call, one CPU is returned > to make the rtas ca

Re: [PATCH] powerpc/pseries: Disable CPU hotplug across migrations

2018-09-18 Thread Gautham R Shenoy
Hi Nathan, On Tue, Sep 18, 2018 at 1:05 AM Nathan Fontenot wrote: > > When performing partition migrations all present CPUs must be online > as all present CPUs must make the H_JOIN call as part of the migration > process. Once all present CPUs make the H_JOIN call, one CPU is returned > to make t

Re: [PATCH] powerpc/pseries: Disable CPU hotplug across migrations

2018-09-17 Thread Tyrel Datwyler
On 09/17/2018 12:14 PM, Nathan Fontenot wrote: > When performing partition migrations all present CPUs must be online > as all present CPUs must make the H_JOIN call as part of the migration > process. Once all present CPUs make the H_JOIN call, one CPU is returned > to make the rtas call to perfor

[PATCH] powerpc/pseries: Disable CPU hotplug across migrations

2018-09-17 Thread Nathan Fontenot
When performing partition migrations all present CPUs must be online as all present CPUs must make the H_JOIN call as part of the migration process. Once all present CPUs make the H_JOIN call, one CPU is returned to make the rtas call to perform the migration to the destination system. During test