On 02/10/2010 06:47 PM, Alexander Graf wrote: >>> Because on PPC, you usually run PPC32 userspace code on a PPC64 kernel. >>> Unlike with x86, there's no real benefit in using 64 bit userspace. >>> >>> >>> >> btw, does 32-bit ppc qemu support large memory guests? It doesn't on >> x86, and I don't remember any hacks to support large memory guests >> elsewhere. >> >> > > It doesn't :-). In fact, the guest we virtualize wouldn't work with > 2 > GB anyways, because that needs an iommu implementation. >
Oh, so you may want to revisit the "there's no real benefit in using 64 bit userspace". Seriously, that looks like a big deficiency. What would it take to implement an iommu? I imagine Anthony's latest patches are a first step in that journey. -- error compiling committee.c: too many arguments to function
