Re: [PATCH 2/2] arm64: dts: qcom: agatti: Address Gunyah memory alignment needs

[Sumit Garg]

On Sat, Jan 03, 2026 at 09:49:04AM -0600, Bjorn Andersson wrote:
> On Mon, Dec 29, 2025 at 12:42:58PM +0530, Sumit Garg wrote:
> > From: Sumit Garg <sumit.garg@xxxxxxxxxxxxxxxx>
> > 
> > Gunyah hypervisor requires it's memory start address to be 2MB aligned.
> > So the address map for Agatti is updated to incorporate that requirement.
> > This should be a backwards compatible DT change which should work with
> > legacy QHEE based firmware stack too.
> > 
> 
> How come this isn't conveyed to the operating system using the UEFI
> memory map?
> 

I agree that with EFI boot, the information is getting conveyed via EFI
memory map. But there will be non-EFI boot scenarios as well in case of
U-Boot. And moreover I suppose we need to keep the reserved memory
ranges in DT updated to reflect the actual memory map.

-Sumit