[Qemu-devel] Re: RFC: emulation of system flash

[Gleb Natapov <gleb@redhat.com>]

On Fri, Mar 11, 2011 at 01:41:17PM -0800, Jordan Justen wrote:
> On Thu, Mar 10, 2011 at 12:21, Gleb Natapov <gleb@redhat.com> wrote:
> > On Thu, Mar 10, 2011 at 11:50:42AM -0800, Jordan Justen wrote:
> >>
> >> So, perhaps this feature should build upon the other feature you and
> >> Jan are discussing.  When will it become available?
> >>
> > When somebody will be motivated enough to send patches. If this was the
> > only thing that stands in a way of QEMU having EFI firmware with CSM
> > support it would have happened much faster though.
> 
> Regarding the read-IO, write-IO, read-RAM, write-RAM slots feature for kvm...
> 
> Unfortunately, this is not much related to the CSM issue.
> 
> It sounds to me like this feature would be important for a good
> implementation of flash support that covers both qemu & kvm.
> 
> How big is this task?  How can I find out more to see if I can help?
> 
Having BIOS (or executable part of a flash) to be mapped as memory and
rest of the flash to be IO does not require any special changes to KVM
or QEMU. This is just a matter of implementing command line parsing and
flash device emulation.

--
			Gleb.