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



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.

Cheers,

--
Julien Grall




 


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