Re: [PATCH v1 1/6] xen/arm: Decrease size of the 2nd ram bank

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Tue, 24 Sep 2024, Julien Grall wrote:
> Hi Edgar,
> 
> On 24/09/2024 17:23, Edgar E. Iglesias wrote:
> > From: "Edgar E. Iglesias" <edgar.iglesias@xxxxxxx>
> > 
> > The address range between 4G (32bit) and 1TB (40bit) is fully
> > allocated. There's no more room for devices on ARM systems with
> > 40-bit physicall address width.
> > > This decreases the size of the second RAM bank to free up space
> > in preparation for virtio-pci and for future use-cases.
> 
> I don't think we should reduce the amount of RAM supported in the default
> case. Instead, I think it is time to support a more dynamic layout so we still
> allow 1TB guest when QEMU is not emulated a virtual PCI hostbridge.

Edgar, do you think it would be possible for QEMU to take the virtio-pci
address ranges and SPIs on the command line? If yes, I think that would
solve the problem on the QEMU side.

On the Xen side, you have already added "virtio-pci-ranges" as dom0less
property and that's all we need as far as I can tell.

Then you can remove patch #1 and patch #2 from this series?