CVS commit: src/sys/arch/x68k/include

["Izumi Tsutsui" <tsutsui%netbsd.org@localhost>]

Module Name:    src
Committed By:   tsutsui
Date:           Sat Jan 25 00:07:48 UTC 2014

Modified Files:
        src/sys/arch/x68k/include: vmparam.h

Log Message:
Increase VM_KERNEL_PT_PAGES from 2 to 4 for x68k.

X68030 with 8MB or 12MB RAM (which is default for most X68030s)
now gets "pmap_enter_ptpage: can't get KPT page" panic again
with VM_KERNEL_PT_PAGES=2 while it works with >=14MB.
3 is enough to boot for now, but I also add a spare.

I guess this is because the post netbsd-6 vmem(9) bootstrap
changes require more kernel memory before MD pmap_init().

Note1:  netbsd-6 (which also pulls physmem detection changes
        that affect nptpages) doesn't have this problem.
Note2:  other hp300 pmap based m68k ports might have the same issue,
        but at least 12MB luna68k works with VM_KERNEL_PT_PAGES=2
        so I think it depends on kernel size and/or iomapsize.


To generate a diff of this commit:
cvs rdiff -u -r1.35 -r1.36 src/sys/arch/x68k/include/vmparam.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.