U Area Removal

[Marcel Moolenaar]

On Nov 10, 2004, at 7:00 PM, David Schultz wrote:

> I propose to remove the ability to swap the U area, allocating p_stats
> from malloced memory instead.  Medium-term scheduling and swapping of
> kernel stacks would be retained.  Here are the patches; !i386 testers
> wanted:
>
> 	http://www.freebsd.org/~das/patches/upages.diff
>

I got the following on ia64:

	:
Mounting root from ufs:/dev/da0p2
init died (signal 6, exit 0)
panic: Going nowhere without my init!
KDB: enter: panic
[thread 100003]
Stopped at      kdb_enter+0x81: [F1]    nop.f 0x0
db> trace
kdb_enter(0xe0000000045e7db8, 0xe00000000428c9d0, 0x896, 
0xa000000019f031e8) at kdb_enter+0x81
panic(0xe0000000045e5570, 0x6, 0x0, 0xe00000000737ae50, 
0xe000000004521bd0) at panic+0x1c0
exit1(0xe00000003e5fe780, 0x6, 0x4, 0xe0000000046ce100, 
0xe0000000046ce100) at exit1+0xd0
kern_execve(0xe00000003e5fe780, 0x9ffffffffffffff2, 0x2, 
0xe0000000046cd820, 0x4, 0x2, 0xc, 0xa000000019f032e0) at 
kern_execve+0x1d40
start_init(0x9fffffffffffffd8, 0x9ffffffffffffff2, 0xe00000000468f0a2, 
0xe00000000468f098, 0x9ffffffffffffffd) at start_init+0x7a0
fork_exit(0xe00000000460c640, 0x0, 0xa000000019f03550) at 
fork_exit+0x120
enter_userland() at enter_userland
db>

I have to triage this, but that's not for today (in 7 minutes it will
be tomorrow :-)

-- 
  Marcel Moolenaar         USPA: A-39004          marcel at xcllnt.net