Single zImage and KVM

Rob Herring robherring2 at
Tue Mar 6 14:50:36 UTC 2012

On 03/04/2012 04:02 PM, Michael Hope wrote:
> I'd like to have one KVM kernel image which is suitable for the real
> hardware host and the virtio based guest.  The single zImage plus
> Device Tree work seem like a great way to do this.
> We're currently using the vexpress-a15 on a Fast Model as the host and
> a vexpress-a15 as the guest.  Device Tree support is required to
> describe the virtio-mmio devices.  As a bonus, the vexpress-a9 and
> vexpress-a15 are the same hardware with a different memory map and can
> help demonstrate the Device Tree support.

Except LPAE and non-LPAE will be 2 different builds... At least you will
be able to run the same non-LPAE kernel build on both.

> What are the plans for single zImage?  Where does the vexpress-a15 fit
> in with that?  Could I bump it to the front of the list?

DT support for vexp A9 is going into 3.4 I believe. Pawel has been
working on it and can probably give details on A15 support. A single
kernel for these 2 platforms (and A7 as well) is much simpler than
getting to a single zImage in general (i.e. omap plus But we'll
be a lot closer in 3.4.


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