* Sandipan Das:

> The Power ISA mandates that all writes to the Authority
> Mask Register (AMR) must always be preceded as well as
> succeeded by a context-synchronizing instruction. This
> applies to both the privileged and unprivileged variants
> of the Move To AMR instruction.

Ugh.  Do you have a reference for that?

We need to fix this in glibc.

Thanks,
Florian

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