Re: NetBSD installation woes on Sun Blade 100

[Connor McLaughlan <cont6pro3%gmail.com@localhost>]

On Mon, Jul 13, 2020 at 10:54 AM Volker A. Brandt <vab%bb-c.de@localhost> wrote:
>
> Connor McLaughlan writes:
> > But when i build a new kernel on this machine, i would not have the
> > necessary patches for SSIZE, right?
> > So how can i get my machine stable with netbsd?
>
> Do you have another machine (x86 PC, maybe a VM) where you could cross-
> compile?  Haven't tried that in many years, but it's still supported.
>
>
> Regards -- Volker
> --
> ------------------------------------------------------------------------
> Volker A. Brandt        Consulting and Support for Solaris-based Systems
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> "When logic and proportion have fallen sloppy dead"

I have set up a qemu-sparc64 to compile the kernel. So i can try
different settings until the kernel eventually becomes stable on this
machine.
A Linux kernel can run and compile for weeks without any problem,
while the NetBSD-Kernel could crash as early as one hour after boot.

I don't have experience what is needed to analyze or debug the cause,
so my plan is to play with different settings of the kernel to see
what happens.

So now i am testing these options:

aceride* at pci? dev ? function ? flags 0x0002 # Acer Lab IDE controllers
cd* at atapibus? drive ? flags 0x0fac # ATAPI CD-ROM drives

But to boot this kernel needs the relevant SSIZE settings/patches
mentioned by John Klos to correctly initialize my mach64-GPU on the
Sun Blade 100.
I figured this applies to param.h in
/usr/src/sys/arch/sparc64/include, so i doubled the value from 2 to 4:

/* We get stack overflows w/8K stacks in 64-bit mode */
#define SSIZE 4 /* initial stack size in pages */
#else #define SSIZE 4
#endif
#define USPACE (SSIZE*8192)

But i am not sure if this is the correct location and/or value and if
there are more changes needed...

Regards,
Connor