Re: 2.6.10-rc3, i386: fpu handling on sigreturn

[Bodo Stroesser]

Andi Kleen wrote:
> Bodo Stroesser <bstroesser@xxxxxxxxxxxxxxxxxxx> writes:
>
> > Now, the interrupted processes fpu no longer is cleared!
>
>
> I agree it's a bug, although it's probably pretty obscure so people
> didn't notice it.  The right fix would be to just clear_fpu again
> in this case.  The problem has been in Linux forever.
Wouldn't it be better to also reset used_math to 0? (As it has been,
before the sighandler was started)

Bodo
> Here's an untested patch for i386 and x86-64. 
>
> -Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/