Re: [Qemu-devel] Interest in hardware plugin functionality

[Andre Pech <andre.pech@gmail.com>]

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This functionality is not strictly for hotplugging. Maybe my use of the term
hardware plugin was misleading. The patch adds the ability to pass a .so
file compiled against qemu's header files to qemu on the command line. This
.so file is dlopened and registers itself as hardware appropriately, all
before the operating system actually boots.
I could envision adding the ability to have a qemu monitor command to
similarly open such a file in order to hotplug a hardware device, but
obviously this would be limited to the hardware types that the operating
system supports hotplugging for.
Andre

On 1/10/06, Lennert Buytenhek <buytenh@wantstofly.org> wrote:
>
> On Mon, Jan 09, 2006 at 05:38:58PM -0800, Andre Pech wrote:
>
> > I have been using qemu to simulate various types of custom hardware
> > for testing purposes. Rather than having to recompile qemu every time
> > I change a hardware simulation, I instead patched qemu to support
> > dynamically loading hardware plugin files at run time. The basic idea
> > is that you can specify .so files to load on the command line when you
> > boot qemu. These files will be dlopened by qemu at run time, and will
> > register themselves as hardware to the appropriate hardware controller
> > (ie a PCI device hardware plugin registers itself with the PCI bus).
>
> I think the biggest problem would be that a lot of operating systems
> don't support hotplug PCI.
>
>
> --L
>
>
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