From b5693ef77f1466bc30292f9728addebfad803e92 Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Sat, 15 Sep 2018 01:30:45 +1000 Subject: [PATCH] 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: Nicholas Piggin Signed-off-by: Michael Ellerman Signed-off-by: Sasha Levin --- arch/powerpc/mm/slb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c index 309027208f7c..27f00a7c1085 100644 --- a/arch/powerpc/mm/slb.c +++ b/arch/powerpc/mm/slb.c @@ -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;