Re: math_state_restore() question

[Akira Tsukamoto]

On Wed, 17 Aug 2005 17:42:22 +0900 (JST)
Hiro Yoshioka <hyoshiok@xxxxxxxxxxxxxxxx> mentioned:
> > Just take a look at __switch_to(), where __unlazy_fpu() is called.
> 
> Thanks. Does an exception handler (like page_fault, etc) come 
> from __switch_to()?

No, page_fault is generated when the location of memory access(virtual) 
does not have physical memory.

If you have a code like this,
   movq   (%%esi), %%mm0
a page of address %%esi might be swapped out already and might not 
have any physical memory page allocated.


-- 
Akira Tsukamoto <akira-t@xxxxxxxxxxxxxx, at541@xxxxxxxxxxxx>


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