Hi,

[sorry for the late answer, I was sick yesterday with digestive
system trouble, but nothing serious, just painful....]

On Sat, Sep 18, 2021 at 1:26 PM Ulrich Teichert
[off-list ref] wrote:

quoted

I was just tinkering with it to get it compiled without warning,
I certainly didn't get the big picture :-/

Ok, you shamed me into some tinkering too, and I fixed a couple of
issues with the alpha build.

The whole "pci_iounmap()" mess is not something I solved (you were
cc'd on the email I sent out about that), but I did test a few
different Jensen configurations and fixed a couple of uglies.

So at least _some_ Jensen configurations build cleanly once more, and
I re-enabled JENSEN as a valid machine target.

Yes, I was able to build a minimal Jensen config without any warning
after pulling today, thanks! I think investing a bit in cleaning up
non-PCI configurations may help as soon as PCIe will be obsoleted
by the next bus system ;-)

But if it doesn't boot, it's all fairly moot. And those things are a
pain to debug, and if the last booting kernel was years and years ago,
I don't think it realistically will necessarily ever be fixed.

The main trouble is that my system has only 64MB of memory and the smallest
kernel image with all drivers I need was about 105MB big. According
to: http://users.bart.nl/~geerten/FAQ-9.html
the Jensen can take up to 128MB of RAM and the required PS/2 SIMMs
with partity are still available on ebay, so I just bought 4x32 MB SIMMs.
After setting CONFIG_CC_OPTIMIZE_FOR_SIZE the kernel image was still
93MB big, but with 128MB I should be able to boot it. Let's see....

Oh well. I have an odd love-hate relationship with alpha.

I think it's one of the worst architectures ever designed (memory
ordering is completely broken, and the lack of byte operations in the
original specs were a big reason for the initial problems and eventual
failure).

I didn't had the money for an Alpha at that time, but as soon as
cheap systems were available on ebay, I took the opportunity. At the
time I bought them, I considered the Miatas (the "Personal Workstations"
from DEC) as quite fast - that must have been around 2004/2006.

But at the same time, I really did enjoy it back in the day, and it
_was_ the first port I did, and the first truly integrated kernel
architecture (the original Linux m68k port that preceded it was a
"hack up and replace" job rather than "integrate")

My experience is that each port is good for code quality, but I can
only state that for user space applications, not having done much kernel
work,

CU,
Uli
-- 
Dipl. Inf. Ulrich Teichert|e-mail: Ulrich.Teichert@gmx.de | Listening to:
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