FPU emulation problems in 2.4

From: Ross Vandegrift (ross@willow.seitz.com)
Date: Tue Jul 24 2001 - 16:23:40 EST

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
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This archive was generated by hypermail 2b29 : Tue Jul 31 2001 - 21:00:18 EST