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mmu-hash*: Cleanup segment-level NX check
On the ppc hash mmus, no-execute can be set at the segment level (on more recent 64-bit hash mmus it can also be set at the page level). This patch separates out this check to make it clearer what is going on, and avoiding excessive indentation of the remaining translation code. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
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