On 05/09/2020 13:26, Mark Kettenis wrote:
>> From: Daniel Pocock <dan...@pocock.pro>
>> Date: Fri, 4 Sep 2020 18:32:20 +0200
>
> Hi Daniel,
>
>>
>> On 04/09/2020 18:22, Mark Kettenis wrote:
>>
>>> Seriously though, I have an idea why this happens; I'll see if I can
>>> come up with a quick fix.
>>
>> Great, I'll be happy to test it and give some feedback
>
> I committed a quick fix that (if my calculations are right) should
> allow you to boot with 128G of RAM (but probably not with 256G). The
> latest snapshot probably already has those fixes. But if you get the
> same output, please try again in a day or so.
>
> In case you're interested, the problem is that the kernel virtual
> address space is somewhat limited in the current implementation (4G,
> which I now bumped to 6G). With 128G a large fraction of that space
> gets used for the data structures that describe the memory pages. I
> need to expand the kernel virtual address space further but that is
> a bit more work.
Thanks for getting on to that so quickly. I will probably only be able
to test again at the end of the week, Friday, then I'll give some more
feedback.
>> It is a new build so I'll be trying a few different things on it before
>> putting it into serious use. Is there anything else that would be
>> useful for me to exercise in OpenBSD on Talos II?
>
> It is still early days for OpenBSD/powerpc64 so any testing you can do
> is welcome. If you end up testing additonal PCIe hardware in the
> machine let me know and I can provide some hints for adding the
> necessary drivers.
The cards I'm likely to test this week:
HBA: LSI SAS 9207-4i4e
GPU: Sapphire Radeon RX 580 Pulse
I have a couple of older NVIDIA GPUs lying about too, for example,
Quadro K2200. I might test them if I have some extra time.
NVMe: I need to buy a more modern HBA or OCuLink adapter to run a pair
of U.2 SSDs together with some legacy SATA SSDs and HDDs. An
alternative is to just put in a dual-OCuLink card for the U.2 drives and
use my existing 9207-4i4e for the legacy drives. If you can make any
suggestions which card or combination of cards to consider that would be
helpful, especially if they are cards that other OpenBSD users have
already validated on other architectures.
Regards,
Daniel
