powerpc/64s/hash: Fix stab_rr off by one initialization
[ Upstream commit 09b4438db13fa83b6219aee5993711a2aa2a0c64 ] This causes SLB alloation to start 1 beyond the start of the SLB. There is no real problem because after it wraps it stats behaving properly, it's just surprisig to see when looking at SLB traces. Signed-off-by: NNicholas Piggin <npiggin@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au> Signed-off-by: NSasha Levin <sashal@kernel.org>
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