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powerpc/64s/hash: Fix stab_rr off by one initialization

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[ 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: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Nicholas Piggin 2018-09-15 01:30:45 +10:00 committed by prashantpaddune
parent cc008bd1fe
commit a4d90b7428
1 changed files with 1 additions and 1 deletions
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arch/powerpc/mm/slb.c
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@ -322,7 +322,7 @@ void slb_initialize(void)
#endif
}
get_paca()->stab_rr = SLB_NUM_BOLTED;
get_paca()->stab_rr = SLB_NUM_BOLTED - 1;
lflags = SLB_VSID_KERNEL | linear_llp;
vflags = SLB_VSID_KERNEL | vmalloc_llp;