Re: SMP support

Marius Gripsgard, le mer. 19 nov. 2025 15:44:22 +0000, a ecrit:
> > On 16 Nov 2025, at 19:13, Samuel Thibault <[email protected]> wrote:
> > Brent W. Baccala, le dim. 16 nov. 2025 12:56:30 -0500, a ecrit:
> >> Dear Samuel,
> >> 
> >> On Fri, Nov 14, 2025 at 7:05 PM Samuel Thibault <[1][email protected]>
> >> wrote:
> >> 
> >>    Brent W. Baccala, le ven. 14 nov. 2025 13:23:07 -0500, a ecrit:
> >>> How do you enable SMP support?  I've tried starting kvm with `-smp 4` but
> >>    I
> >>> don't see more than one core in /proc/cpuinfo.
> >> 
> >>    You need to use the -smp kernel.
> >> 
> >> 
> >> So, looking over the package lists for "gnumach", it appears that there are
> >> amd64 images and smp images, but no amd64 smp image.
> >> 
> >> Does this mean we have 64-bit support and SMP support, but can't do both at the
> >> same time?
> > 
> > I don't think anybody has given any stab at 64b+SMP so far.
> I’m interested in this, how different would a SMP impl for 64 bit be compared to 32 bit?

The bootup procedure for the non-boot processors is probably different
from 32bit.

Samuel