re: my simh-vax crashed: panic: pmap_enter on PG_SREF page

[matthew green <mrg%eterna23.net@localhost>]

Anders Magnusson writes:
[ ... ]
> - its user process pages has been referenced (SREF set), then

unless i'm mis-reading vax pmap.c, PG_SREF means that this page
has been pmap_kenter_pa()'d, which means it was mapped into the
kernel address space as an unmanaged address, and this can never
be true for user pages, and shouldn't ever be mapped as well with
other managed pages.  (managed meaning "mod/ref" bits work.)

... AFAIUI.


.mrg.