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Date: Tue, 13 Nov 2018 09:13:03 +0530
From: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
To: Michael Ellerman <mpe@ellerman.id.au>
Subject: Re: [PATCH] powerpc: Add KVM guest defconfig
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Reply-To: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Cc: Breno Leitao <leitao@debian.org>, linuxppc-dev@lists.ozlabs.org,
 Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
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 <linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org>

On Mon, Nov 12, 2018 at 11:24:08PM +1100, Michael Ellerman wrote:
> Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> writes:
> 
> > On Thu, Nov 08, 2018 at 04:23:07PM -0200, Breno Leitao wrote:
> >> hi Satheesh,
> >> 
> >> On 11/08/2018 03:08 AM, sathnaga@linux.vnet.ibm.com wrote:
> >> > --- /dev/null
> >> > +++ b/arch/powerpc/configs/guest.config
> >> > @@ -0,0 +1,14 @@
> >> > +CONFIG_VIRTIO_BLK=y
> >> > +CONFIG_VIRTIO_BLK_SCSI=y
> >> > +CONFIG_SCSI_VIRTIO=y
> >> > +CONFIG_VIRTIO_NET=y
> >> > +CONFIG_NET_FAILOVER=y
> >> > +CONFIG_VIRTIO_CONSOLE=y
> >> > +CONFIG_VIRTIO=y
> >> > +CONFIG_VIRTIO_PCI=y
> >> > +CONFIG_KVM_GUEST=y
> >> > +CONFIG_EPAPR_PARAVIRT=y
> >> > +CONFIG_XFS_FS=y
> >> 
> >> Why a guest kernel needs to have XFS integrated in the core image? I am
> >> wondering if it is a requirement from another CONFIG_ option.
> >
> > Idea is to have a working config which would boot guest without initramfs,
> > other FS(like EXT4) is already integrated in the core image, 
> > thought this would be helpful for distributions, which default XFS as root disk.
> 
> Maybe we should switch XFS_FS to Y in ppc64_defconfig ?

Sure, makes sense, will send it for ppc64_defconfig instead. 
Inaddition, Have few more symbols to be enabled for cgroups,
memhotplug,numa balancing.
I guess these symbols can also go to ppc64_defconfig itself?.

i.e,

CONFIG_CGROUP_SCHED=y
CONFIG_MEMCG=y
CONFIG_CGROUP_SCHED=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CGROUP_CPUACCT=y
CONFIG_CGROUP_PERF=y
CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTREMOVE=y
CONFIG_NUMA_BALANCING=y

Thanks!
-Satheesh.
> 
> cheers
>