Re: [Qemu-devel] qemu-fast kernel patch question

[Mulyadi Santosa]

Hello Jim :-)

First thank you to help correcting my logics :-)

> You could patch the host not to use that area, but then it would have to
> use another area ... thus you'd have to patch the guest anyways, regardless
> of the host.
Agree....why I don't think in such a logic before...hrrrrrr :-)

> Fabrice has said that the eventual idea is to have qemu-fast detect which
> areas are not accessable via mmap() and use the softmmu to emulate for only
> those areas. The rest would be accessed via the faster mmap(). So, if you
> patch qemu-fast in the right way, you might not have to patch the guest or
> the host. :)

So, that would be running mmap() scanning on early boot of Qemu, am  I right? 
from there, Qemu can take decision which area is free and which is already 
taken by host....Hm....looks like Qemu needs additional kernel module 
inserted to host's kernel to help Qemu on "memory layout" negotiation....:-)

regards

Mulyadi