On Wed, 2017-07-12 at 17:09 +0530, Shivaprasad G Bhat wrote:
Setting numa_node for emulated devices is the benefit for now. On x86, I figured there is no way to set the numa_node for the root controller and the emulated devices sitting there all have numa_node set to -1. Only the devices on the pxb can have a sensible value specified. Does it mean, the emulated devices/drivers don't care about the numa_node they are on? Would it be fine on PPC to disallow setting the NUMA node for the default PHB because that is where all the emulated devices sit ?
I was not aware of that limitation for x86 guests. If that's the case, then I would say it's perfectly okay to just disallow setting the NUMA node for the default PHB, at least for the time being. -- Andrea Bolognani / Red Hat / Virtualization