re: mostly working SMP again

[matthew green <mrg%eterna.com.au@localhost>]

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   Hello,
   
   with the fix in intr.c my SS20 managed to build.sh -j4 for about an  
   hour before falling over:
   
   kernel: alignment fault trap
   pv_flushcache(0xdeaddead)
   pmap_copy_page4m()
   uvm_pagecopy()
   uvmfault_promote()
   uvm_fault_internal()
   mem_access_fault4m()
   
   yeah, the argument to pv_flushcache4m() looks bogus.

kern/subr_pool.c:#define  PI_MAGIC 0xdeaddeadU

is my guess.  do you have DIAGNOSTIC?  and DEBUG?  pool_do_put()
will scribble all over with this value ..


.mrg.