[Vm-dev] Sorry, Sorry! [WAS: Trouble running OSVM in an Ubuntu 20/aarch64 docker]

[Eliot Miranda]

Hi Ken,

    thanks for this!! I’ll try and add an error message to the failure to point users to the fix.  This is another one like not being able to set the heartbeat thread priority that the vm needs to report as helpfully as possible.

_,,,^..^,,,_ (phone)

> On Dec 31, 2020, at 6:15 AM, Ken.Dickey at whidbey.com wrote:
> 
> Apologies to all, I though I had trimmed the header on this..
> -KenD
> =============
> Message: 6
> Date: Thu, 31 Dec 2020 04:18:58 -0800
> From: Christoph Thiede <notifications at github.com>
> To: OpenSmalltalk/opensmalltalk-vm
>    <opensmalltalk-vm at noreply.github.com>
> Cc: Comment <comment at noreply.github.com>, OpenSmalltalk-Bot
>    <vm-dev at lists.squeakfoundation.org>
> Subject: Re: [Vm-dev] [OpenSmalltalk/opensmalltalk-vm] Trouble running
>    OSVM in an Ubuntu 20/aarch64 docker (raspi) (#544)
> Message-ID:
>    <OpenSmalltalk/opensmalltalk-vm/issues/544/752942612 at github.com>
> Content-Type: text/plain; charset="utf-8"
> 
> I have tried that and built the VM again, but I keep getting the same
> mprotect error message :( Any other ideas?
> 
> From: oscogvm/build.linux64ARMv8/HowToBuild:
> 
> vvv======vvv
> 
> If running the resultant squeak vm gives an error something like
>    mprotect(x,y,PROT_READ|PROT_EXEC)
> or
>    memory_alias_map: shm_open: Permission denied
> you need to enable shared memory for the COG JIT.
> 
> As root:
>   chmod 777 /dev/shm
>   echo 'none /dev/shm tmpfs rw,nosuid,nodev 0 0' >> /etc/fstab
>   mount /dev/shm
> 
> The squeak vm should now work.
> ^^^======^^^