Re: [MirageOS-devel] Compiling on/for ARM

[Anil Madhavapeddy <anil@xxxxxxxxxx>]

On 26 Mar 2015, at 19:12, Magnus Therning <magnus@xxxxxxxxxxxx> wrote:
> ~~~
> 
> The dom0 has 512M memory, maybe it would help to give it a bit more...
> If I could only figure out how!  `sudo xl mem-set` fails with a rather
> surprising error:
> 
>    libxl: error: libxl.c:4075:libxl_set_memory_target: cannot get memory info 
> from /local/domain/0/memory/static-max : No such file or directory
> 

You need to increase the amount of swap that dom0 has in the traditional way:

    sudo dd if=/dev/zero of=/swapfile bs=1024 count=512k
    sudo mkswap /swapfile
    sudo swapon /swapfile

and then add to /etc/fstab so it persists on reboot:

/swapfile none swap sw 0 0 

The mirage-arm-builder could automate this via an LVM partition on boot (so 
that it doesn't eat up the precious root filesystem space).  Feel free to patch 
that into the repository or create an issue on 
https://github.com/mirage/xen-arm-builder/issues to remind someone else to do 
it in the future.

-anil


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