Re: cmpxchg broken in some situation

[Ralf Baechle <ralf@linux-mips.org>]

On Mon, Oct 01, 2007 at 11:11:17PM +0800, Fuxin Zhang wrote:

> Sorry that it seems not work:
> the kernel oops at sysfs_open_file->sysfs_get_active with unaligned 
> access(last seen exception on screen, no serial console by hand so it 
> may not be the first exception). It is probably caused by 
> "atomic_cmpxchg" there.
> And keep the old kernel using new modules with patched cmpxchg also lead 
> to glxgears die(should be lock problem like before).

Can you look at the disassembly of the generated code?  It should hopefully
be relativly obvious in the disassembly.

  Ralf