On Fri, Mar 26, 2010 at 09:16:19AM -0700, Dale Farnsworth wrote: > On Thu, Mar 25, 2010 at 11:32:57PM +0100, Alexander Graf wrote: > > > > Am 25.03.2010 um 22:04 schrieb Avi Kivity <avi@xxxxxxxxxx>: > > > >> On 03/25/2010 06:54 PM, Dale Farnsworth wrote: > >>> I'm beginning to look at implementing KVM on MIPS. I've tried to > >>> search > >>> for any work-in-progress on this but haven't found much at all. > >> > >>> If you know of anyone who is working on this or of pitfalls I should > >>> consider before jumping in, please let me know. > >>> > >> > >> Is the instruction set virtualizable? > > > > FWIW it's not. Kernel mode is used based on an address offset of the IP. > > Since you'd want to have your guest running in user mode, you're pretty > > much lost there. > > I guess that would qualify as a pitfall. Thanks Avi and Alex. After thinking about this some more, I think this means we can't run an unmodified guest. It should be possible to build the guest kernel to run in supervisor or user mode/address space. I'm new to MIPS, so I'm still looking for other challenges in virtualizing the instruction set. -Dale -- 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
