>>> On 27.07.12 at 12:00, Ian Campbell <ian.campb...@citrix.com> wrote: > On Fri, 2012-07-27 at 08:34 +0100, Jan Beulich wrote: >> >>> On 26.07.12 at 22:47, Konrad Rzeszutek Wilk <konrad.w...@oracle.com> >> >>> wrote: >> > 2). Allocate a new array, copy the existing P2M into it, >> > revector the P2M tree to use that, and return the old >> > P2M to the memory allocate. This has the advantage that >> > it sets the stage for using XEN_ELF_NOTE_INIT_P2M >> > feature. That feature allows us to set the exact virtual >> > address space we want for the P2M - and allows us to >> > boot as initial domain on large machines. >> >> And I would hope that the tools would get updated to recognize >> this note too, so that huge DomU-s would become possible as >> well. > > Does this help us with >160GB 32 bit PV guests too? I'm guessing not > since the real limitation there is the relatively small amount of kernel > address space.
Correct - 32-bit PV guests are limited anyway (and it's for a reason the Dom0 support in the hypervisor only deals with 64-bit ones). And honestly, considering the huge page information table such a memory amount would require, I doubt this big a PV guest would even boot (or if it does, be of any use). Jan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
