I have noticed this also.
Thad
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Today's Topics:
1. Re: Zynq UltraScale+ locks up after hours running
(Shen, Yanyan (Data61, Kensington NSW))
2. Re: How to use sel4runtime
(Millar, Curtis (Data61, Kensington NSW))
3. Re: Zynq UltraScale+ locks up after hours running
(Leonid Meyerovich)
----------------------------------------------------------------------
Message: 1
Date: Thu, 3 Oct 2019 06:43:52 +0000
From: "Shen, Yanyan (Data61, Kensington NSW)"
<[email protected]>
To: "[email protected]" <[email protected]>,
"[email protected]" <[email protected]>
Subject: Re: [seL4] Zynq UltraScale+ locks up after hours running
Message-ID:
<[email protected]>
Content-Type: text/plain; charset="utf-8"
Hi Leonid,
Could you provide a bit more about your software configuration? For
instance, do you have multiple VMs running on dedicated hardware cores?
How are the VM and processes configured?
Also, you mean there were no interrupts at all on all the four cores?
Regards,
Yanyan
On Wed, 2019-10-02 at 16:01 +0000, Leonid Meyerovich wrote:
> Hello,
>
> We are running seL4 microkernel on 4 cores Zynq UltraScale+ (zcu102
> board). The implementation includes multiple processes, hypervisor
> and virtual machine running on dedicated core. After several hours
> running (it could be 2 or even 8 hours) the whole microkernel locks
> up. After some investigation I have found that no interrupts
> generated anymore - at least there is no interrupts coming to ISR.
> Inside ISR I have monitored PL2 Physical Timer Control register,
> which feeds a scheduler and didn't find any problems - it stays
> enabled and not masked.
>
> I will appreciate any idea/direction for approaching this problem.
>
> Thank you,
>
> Leonid
>
>
>
>
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Message: 2
Date: Thu, 3 Oct 2019 07:04:41 +0000
From: "Millar, Curtis (Data61, Kensington NSW)"
<[email protected]>
To: "[email protected]" <[email protected]>
Subject: Re: [seL4] How to use sel4runtime
Message-ID:
<[email protected]>
Content-Type: text/plain; charset="utf-8"
Hi Baltazar,
> Another (less exclusively RISC-V related, though I am targeting RISC-V
> still) question - I've been trying to figure out the sel4runtime repo,
> but I'm a bit confused on how to set it up. Specifically:
>
> * How much of a "minimal seL4 environment" do I need to initialize
> first?
The sel4runtime is a minimal C runtime specifically for seL4. It handles
the initialization of all applications (root servers and System-V ELF
processes) on an seL4 system.
A minimal project will require a repo project containing seL4,
seL4_tools, musl, and sel4runtime (along with a root task application).
sel4runtime is then used as the C runtime for all applications built in
the project and is responsible for providing the entrypoints and calling
into the main function.
> * Do does my program with main() also need to specify a root task, or
> is that part of the minimal environment?
You will still need to provide a root task application. sel4runtime is
only responsible for handling process startup for C applications.
> * Is there a specific recommended location for the sel4runtime repo?
The sel4runtime repo is usually placed in the projects directory. You
can see sel4-tutorials-manifest[^1] repository on github for an example
of how the dependecies are laid out.
[^1]: https://github.com/SEL4PROJ/sel4-tutorials-manifest
Cheers,
Curtis Millar
Systems Engineer,
Trustworthy Systems, CSIRO's Data61
[email protected]
Data61, CSIRO
Level 3, K17 Building
UNSW Gate 14, Barker St
Kensington NSW 2033 Australia
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Message: 3
Date: Thu, 3 Oct 2019 12:23:44 +0000
From: Leonid Meyerovich <[email protected]>
To: "Mcleod, Kent (Data61, Kensington NSW)"
<[email protected]>, "[email protected]"
<[email protected]>
Subject: Re: [seL4] Zynq UltraScale+ locks up after hours running
Message-ID:
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I can connect JTAG, but I am not sure how I can attach it to the running
system. seL4 project it pretty big and I don't know how I can load it to the
board through JTAG.
I can run this project on zcu102. It seems to me that zcu102 is running a
little bit faster than my target device. The system is also locked from time to
time but with lower rate.
Thank you,
Leonid
-----Original Message-----
From: Mcleod, Kent (Data61, Kensington NSW) <[email protected]>
Sent: Wednesday, October 2, 2019 11:50 PM
To: Leonid Meyerovich <[email protected]>; [email protected]
Subject: Re: [seL4] Zynq UltraScale+ locks up after hours running
> I will appreciate any idea/direction for approaching this problem.
Are you able to access a hardware debugger? At the point where the cores appear
to lock up it's helpful to be able to see where all the threads are and what
the hardware state is. Alternatively, are you able simulate your application
with the zcu102 qemu platform?
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