powerpc: Add user-return-notifier support

Michael Ellerman mpe at ellerman.id.au
Mon Aug 31 20:35:17 AEST 2015

On Tue, 2015-25-08 at 05:41:10 UTC, Ananth N Mavinakayanahalli wrote:
> Add user return notifier support for powerpc. Similar to x86, this feature
> keys off of the KVM Kconfig.

Please flesh this out.

What is it, why do we want it, why is your implementation correct.


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