[Embedded-pv-devel] Memory usage on Aaarch64

["Michael.rosswood" <michael.rosswood@xxxxxxxxxxxxxx>]

Hello everyone,

I'm trying to understand how Xen and each domain use RAM

on Aarch64 systems.

My understanding is that during Xen startup, Xen will copy

itself to upper physical memory, and continue to run from there,

correct? Is there any information on how the heap is handled here

compared to Xen on ARM (e.g. domheap and xenheap)?

From http://www.wiki.xilinx.com/Xen+Hypervisor+internals, it looks

like all memory for dom0 is mapped 1:1. Does this mean that dom0

keeps physical memory from address 0 up until dom0_mem?

Further below, it mentions that each domU has an artificial memory

map. But I'm not sure what this looks like in memory. Could someone

clarify how this is done?

Thanks,

Michael

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