Re: [PATCH] xen/dt: Don't advertise Xen static-heap region to hwdom

[Oleksii Kurochko <oleksii.kurochko@gmail.com>]

On 10/29/26 11:43 AM, Michal Orzel wrote:
> bootinfo.reserved_mem is used to store different types of memory that
> Xen considers as reserved: domU static mem, normal /reserved-memory,
> FDT memreserve and Xen static heap. make_memory_node(), invoked during
> FDT generation for a hwdom for reserved memory, only skips the domU
> static memory and FDT memreserve. This results in advertising Xen static
> heap (if used) to a hwdom as /memory. This memory is not mapped in P2M
> and guest attempt to access it fails. Interestingly, if the
> /reserved-memory node is placed after /chosen, there is no problem because
> of the check at the beginning of make_memory_node() that finds the first
> memory range using the correct type.>
> Fixes: 4596329291f5 ("docs, xen/arm: Introduce static heap memory")
> Signed-off-by: Michal Orzel <michal.orzel@amd.com>

LGTM:

Reviewed-by: Oleksii Kurochko <oleksii.kurochko@gmail.com>

~ Oleksii