svn commit: r205444 - head/sys/i386/i386

[Kostik Belousov]

On Tue, Mar 23, 2010 at 08:21:31PM +0100, Ed Schouten wrote:
> * Ed Maste <emaste at freebsd.org> wrote:
> > I was just about to follow up with a comment to that effect.  We do want
> > it to become a panic, but I would prefer to hold off until we address
> > the known issue with padlock(4).
> 
> I have seen this message appear when using the ndisulator as well. How
> are we going to solve it in this case? Could the ndisulator be extended
> to prepare a FPU context using kib's new API?

I looked at http://msdn.microsoft.com/en-us/library/aa489566.aspx
after someone mentioned ndisulator. It seems that windows requires
that i386 drivers carefully use braces for use of FPU, while amd64
code allowed to use it freely. That suggests that windows clears
TS on kernel mode entry or driver calls, that seems to be too
wastefull.

I would very much appreciate the help with changing both ndis and
padlock to use fpu_kern_enter/leave KPI, since I do not use them.
I need some time to polish the patch before.
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