[libvirt] [PATCH 1/1] qemu: Remove default memory balloon for PPC64

[Paul Mackerras]

On Thu, Nov 21, 2013 at 11:03:46AM +0000, Daniel P. Berrange wrote:
> On Thu, Nov 21, 2013 at 01:52:02PM +0800, Li Zhang wrote:
> > From: Li Zhang <zhlcindy at linux.vnet.ibm.com>
> > 
> > It doesn't need to add a default memory balloon for PPC64.
> > Only if users want it, it can be added explicitly.
> > 
> > Signed-off-by: Li Zhang <zhlcindy at linux.vnet.ibm.com>
[snip]

> Unless this is actively causing failures, then NACK to this
> patch.

Both RHEL6.x and SLES11 SP3 include the virtio-balloon driver in their
ppc64 versions, though the driver was never tested on ppc64.
Unfortunately, virtio-balloon had endianness and page-size bugs prior
to kernel v3.4, with the result that on those distros, any use of the
balloon driver on ppc64 will crash the guest kernel.  So in that sense
this is actively causing failures.

Regards,
Paul.