Re: [Xen-devel] [PATCH 5/6] xen/arm: map reserved-memory regions as normal memory in dom0

[Julien Grall <julien.grall@xxxxxxx>]

Hi Stefano,

On 4/22/19 11:42 PM, Stefano Stabellini wrote:
> On Tue, 26 Feb 2019, Julien Grall wrote:
> I am not sure about the suggestion of re-using the libfdt concept of
> "mem_rsv", which is meant to be for the old /memreserve/. Today, libfdt
> (at least our version of it) is not able to parse the new
> reserved-memory bindings. I don't think it is a good idea to modify
> libfdt for that. Also, the way we want to handle the old memreserve
> regions is quite different from the way we want to handle
> reserved-memory, right? I cannot see a way to improve this code using
> mem_rsv at the moment.
I didn't mean to extend mem_rsv in libfdt but extend consider_modules 
and dt_unreserved_regions to deal with /reserved-memory. Otherwise you
may miss some cases (for instance you left out discard_initial_modules).

By extending those two functions you don't have to teach everyone how to 
skip /reserved-memory.
Cheers,

--
Julien Grall

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