On Fri, Aug 5, 2011 at 12:41 AM, Jan Kiszka <jan.kiszka@xxxxxxxxxxx> wrote: > On 2011-08-05 09:20, Cyclonus J wrote: >> hi, >> >> I am wondering if it is possible to map guest MMIO to host MMIO, the >> purpose is to reduce VM_EXIT as the page tables will be setup before >> MMIO accessing from guest. Here is what I have in mind: > > This is already the case if you pass through devices AND aligment&size > of the MMIO resource allows this. I assume here pass through means using VT-d? Unfortunately, I can't use it for my case and I need to para-virtualize guest OS as well. Thanks, CJ > > What MMIOs do you see that are not mapped 1:1? For what kind of devices? > > Jan > > -- > Siemens AG, Corporate Technology, CT T DE IT 1 > Corporate Competence Center Embedded Linux > -- 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
