Re: NetBSD 10.0 - configure test process hang

Hi Matthew,


matthew green wrote:
> i was just noticing that "pmap 0" on my ss20 is saying 209MB, and
> while i forget exactly how that maps to the KVA limit of 224MB (some
> of it may not be in the same region?), this seems close, and there is
> a*lot*  of free ram still, top says:

What is KVA? in which relation to Memory should it be?

My SS20 is currently configured as:

SPARCstation 20 MP (2 X SuperSPARC-II), No Keyboard
ROM Rev. 2.25, 384 MB memory installed, Serial #4997963.


>
> Memory: 156M Act, 9160K Inact, 9512K Wired, 7688K Exec, 136M File, 250M Free
> Swap: 512M Total, 42M Used, 470M Free / Pools: 70M Used / Network: 5K In, 46K Out
>
> anyway, a few years ago i was noticing that the system would hang a
> bit under some types of load because of hitting the KVA limit, and
> i wrote a patch to increase this by 128MB, though at that point my
> ss20 stopped working right and i got distracted.
>
> anyway, can you try this patch?
>
>     https://www.netbsd.org/~mrg/sparc.starvation.v2.diff
>
> it did get some decent testing a while ago, but i haven't yet booted
> a new kernel with it now, though i have confirmed it builds.
>
> it probably works for -10 branch too, as it was originaly worked on
> before -10 actually branched.

I downloaded 10.0 sources, used GENERIC.MP config file, copied to my 
custom name, no changes.
Applied your patches, did a native compilation (which completed) 
installed and at boot, machine is not reachable.

I attach serial console and see this:
 >> NetBSD/sparc Secondary Boot, Revision 1.15 (Thu Mar 28 08:33:33 UTC 
2024)
Booting netbsd.ss20
4912780+132476 [308512+290198]=0x5623c4
OBP version 3, revision 2.25 (plugin rev 2)
[   1.0000000] panic: uvm_km_bootstrap: could not reserve kernel kmem
[   1.0000000] cpu0: Begin traceback...
[   1.0000000] 0x0(0xf0423618, 0xf0492e10, 0xf04ceaf8, 0x104, 
0xf04cec00, 0xf04cdc00) at netbsd:panic+0x20
[   1.0000000] panic(0xf0423618, 0xf04c8bd8, 0xf000000, 0x0, 0xffffffff, 
0xffffffff) at netbsd:uvm_km_bootstrap+0x114
[   1.0000000] uvm_km_bootstrap(0xf0d01000, 0xf0492e40, 0xf04c8800, 
0xf04c8390, 0xf000000, 0xf04c8800) at netbsd:uvm_ic
[   1.0000000] uvm_init(0xf04cdd50, 0xf047ce90, 0xf04a3ea8, 0xf04b2500, 
0xf047ce90, 0xf04a41d8) at netbsd:main+0x6c
[   1.0000000] main(0x0, 0xf03f86f0, 0xf04a2c00, 0x2000, 0xf04b3800, 
0xf0002000) at netbsd:nmi_sun4m+0xd30
[   1.0000000] cpu0: End traceback...
Stopped in pid 0.0 (system) at  netbsd:cpu_Debugger+0x4: or
%o7, %g0, %g1

I'm not versed here to get better information.... What should I do?

Riccardo