RE: [ros-dev] RE: [ros-diffs] [CVS reactos] FPU/SSE state savingontaskswitching, FPU and SSE exception support.

[Hartmut Birr]

Hi,

with one little change, your patch works perfect on my smp machine. It must
be changed a 'movl' to a 'movb':

movb	$NPX_STATE_VALID, KTHREAD_NPX_STATE(%ebx)

I've expand your test program a little bit. It works now with four threads.

- Hartmut



>   -----Original Message-----
>  From: ros-dev-bounces(a)reactos.com 
>  [mailto:[e-mail]] On Behalf Of Gregor Anich
>  Sent: Tuesday, November 23, 2004 9:56 PM
>  To: ReactOS Development List
>  Subject: Re: [ros-dev] RE: [ros-diffs] [CVS reactos] FPU/SSE 
>  state savingontaskswitching, FPU and SSE exception support.
>  
>  
>  Hello again!
>  
>  Hartmut Birr wrote:
>  
> >  I've revert some parts of fpu.c to your first
> > patch. It  
>  works now on my smp
> >  machine. 
> >
> >   
> >  
>  I have attached a patch to this email, maybe you can try if it works 
>  with this patch. It is a patch against current reactos CVS.
>  
>  I didn't see diff which you attached to your mail the first 
>  time, but it 
>  looks like it's an old version of the fpu.c which I have modified... 
>  maybe it doesn't bugcheck but I think it won't work (unless you have 
>  also reverted tskswitch.S...)
>  
>  I have also attached a fputest program which tests wether the 
>  FPU state 
>  is preserved or not.
>  
>   - blight
>