[PATCH] powerpc/64s: power4 nap fixup in C

[Andreas Schwab]

On Apr 05 2021, Nicholas Piggin wrote:

> I worked it out. There was a window where it could take another 
> interrupt before the first one adjusts the nip.
>
> I managed to trigger it in qemu and this version fixed it.

Works for me as well.

Andreas.

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Andreas Schwab, schwab at linux-m68k.org
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