FPU emulation problems in 2.4

FPU emulation problems in 2.4

[Ross Vandegrift]

Hello everyone,

	In my quest to get 2.4 and netfilter running on my machines
I have been having tons of problems on some [34]86sx machines that 
we use.  On all of them the kernel freezes hard right after saying

VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 196k freed

No keyboard, no SysRq, need a hard reset.  I also tried this on an
AMD K6-2.  With hardware FPU it works fine, but loading with no387
gives an error:

FPU Emulator: Unknown prefix byte 0x00, probably due to
FPU Emulator: self-modifying code! (emulation impossible)
FPU Emulator: Internet error type 0x0126
At 00000023:0286
	SW: b=1  st=0  es=1  sf=1  cc=0010 ef=111111
	CW: ic=0 rc=00 pc=11 iem=0         ef=111111

Searching the archives showed a bug report against 2.1.5 that said
basically the same thing.  Unfortunately there were no more messages
in the thread.

Ross Vandegrift
coolio@tmbg.org
ross@willow.seitz.com