On 12.02.2011, at 15:54, David Gibson wrote: > From: David Gibson <d...@au1.ibm.com> > > PowerPC and POWER chips since the POWER4 and 970 have a special > hypervisor mode, and a corresponding form of the system call > instruction which traps to the hypervisor. > > qemu currently has stub implementations of hypervisor mode. That > is, the outline is there to allow qemu to run a PowerPC hypervisor > under emulation. There are a number of details missing so this > won't actually work at present, but the idea is there. > > What there is no provision at all, is for qemu to instead emulate > the hypervisor itself. That is to have hypercalls trap into qemu > and their result be emulated from qemu, rather than running > hypervisor code within the emulated system. > > Hypervisor hardware aware KVM implementations are in the works and > it would be useful for debugging and development to also allow > full emulation of the same para-virtualized guests as such a KVM. > > Therefore, this patch adds a hook which will allow a machine to > set up emulation of hypervisor calls. > > Signed-off-by: David Gibson <d...@au1.ibm.com>
Acked-by: Alexander Graf <ag...@suse.de> Alex
