KVM: PPC: Fix error in BAT assignment
BATs didn't work. Well, they did, but only up to BAT3. As soon as we came to BAT4 the offset calculation was screwed up and we ended up overwriting BAT0-3. Fortunately, Linux hasn't been using BAT4+. It's still a good idea to write correct code though. Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NAvi Kivity <avi@redhat.com>
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