Re: [PATCH 0/2] xen/arm: Couple of bug fixes when decompressing kernels

[Julien Grall <julien@xxxxxxx>]

Hi,

On 02/04/2021 16:21, Julien Grall wrote:
> From: Julien Grall <jgrall@xxxxxxxxxx>
>
> Hi all,
>
> The main goal of this series is to address the bug report [1]. It is not
> possible
>
> While testing the series, I also noticed that it is not possible to
> re-use the same compressed kernel for multiple domains as the module
> will be overwritten during the first decompression.
>
> I am still a bit undecided how to fix it. We can either create a new
> module for the uncompressed kernel and link with the compressed kernel.
> Or we could decompress everytime.
>
> One inconvenience to kernel to only decompress once is we have to keep
> it until all the domains have booted. This may means a lot of memory to be
> wasted just for keeping the uncompressed kernel (one my setup, it takes
> ~3 times more space).
>
> Any opinions on how to approach it?
>
> Cheers,
>
> [1] https://lists.xenproject.org/archives/html/xen-users/2021-02/msg00027.html
>
> Julien Grall (2):
>    xen/arm: kernel: Propagate the error if we fail to decompress the
>      kernel
>    xen/gunzip: Allow perform_gunzip() to be called multiple times
I have committed the second patch as it is independent. The first patch 
still need some reviews.
Cheers,

--
Julien Grall