On 31.05.2011, at 08:40, Paul Mackerras wrote: > The following series of patches enable KVM to exploit the hardware > hypervisor mode on 64-bit Power ISA Book3S machines. At present only > POWER7 is supported, but it would be easy to add other processors. > > Running the KVM host in hypervisor mode means that the guest can use > both supervisor mode and user mode. That means that the guest can > execute supervisor-privilege instructions and access supervisor- > privilege registers. In addition the hardware directs most exceptions > to the guest. Thus we don't need to emulate any instructions in the > host. Generally, the only times we need to exit the guest are when it > does a hypercall or when an external interrupt or host timer > (decrementer) interrupt occurs. > > The focus of this KVM implementation is to run guests that use the > PAPR (Power Architecture Platform Requirements) paravirtualization > interface, which is the interface supplied by PowerVM on IBM pSeries > machines. Currently the "pseries" machine type in qemu is only > supported by book3s_hv KVM, and book3s_hv KVM only supports the > "pseries" machine type. That will hopefully change in future. > > These patches are against Linus' v3.0-rc1 tree. Thinking about the testability of this a bit more ... how much effort would it be to get this code running on a 970MP with SLOF? There should only be a few POWER7 specific pieces, right? Alex -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
