Re: [Xen-devel] [PATCH for-4.12 v2 2/2] xen/arm: Stop relocating Xen

[Andrii Anisov <andrii.anisov@xxxxxxxxx>]

On 14.12.18 18:26, Julien Grall wrote:
> Are you using arm64 or arm32?
I'm using arm64.
But also speak about arm32.

> I don't understand what you mean. Looking at your log, Xen is relocated at the
> end of the last bank. This is the expected behavior in unstable.
Yes, I miscounted zeroes, and recalled that part before your answer  ;)

> This not the first time part of answer is mangled with my e-mail. This is making
> really difficult to follow the conversion. Can you please configure your e-mail
> client to do proper quote/reply?
OK. Will check it.

> How were you switching between the page-tables? A proper solution would require
> to switch between page-tables using an identify mappings. This is far more
> complicate than what is worth here.
Sorry for my ignorance, what "identify mappings" stands for? Any links for the 
problem description?
I don't remember such details of implementation but pretty sure we didn't mean 
that thing. It was about 3 years ago in a different company on a arm32 SoC.

> Xen is free to allocate anything below 4GB. This is nothing new. But you should
> not have two 128MB chunks stolen because of modules here. If that's the case
> then there is a bug in Xen that should be fixed.
They are stolen from 1:1 memory allocation because of `allocate_memory_11()` 
design and implementation.

--
Sincerely,
Andrii Anisov.

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