[Bug 216606] kernel crashes early in pmap_map when pxe booted with rootfs in memory

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=216606

longwitz at incore.de changed:

           What    |Removed                     |Added
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                 CC|                            |longwitz at incore.de

--- Comment #1 from longwitz at incore.de ---
The problem was caused by the size of my kernel and mfsroot. In my case I need
at boot 68 MB of physical memory (17 page table pages). The kernel needs 18
page table pages for the vm_page_array (/sys/i386/include/pmap.h). Therefore
the default for NKPT=30 is too low. After raising this to NKPT=36 in the kernel
source the crash has gone.

This PR can be closed.

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