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>The Fucked Up Sparc</H1
><P
> Alan Cox says <SPAN
CLASS="QUOTE"
>"the irq disable/enable is in the register
window on a sparc"</SPAN
>. Andi Kleen says <SPAN
CLASS="QUOTE"
>"when you do
restore_flags in a different function you mess up all the
register windows"</SPAN
>.
</P
><P
> So never pass the flags word set by
<TT
CLASS="FUNCTION"
>spin_lock_irqsave()</TT
> and brethren to another
function (unless it's declared <SPAN
CLASS="TYPE"
>inline</SPAN
>. Usually no-one
does this, but now you've been warned. Dave Miller can never do
anything in a straightforward manner (I can say that, because I have
pictures of him and a certain PowerPC maintainer in a compromising
position).
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