From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>,
"Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>
Subject: [PATCH 01/12] powerpc/64s/hash: Fix stab_rr off by one initialization
Date: Sat, 15 Sep 2018 01:30:45 +1000 [thread overview]
Message-ID: <20180914153056.3644-2-npiggin@gmail.com> (raw)
In-Reply-To: <20180914153056.3644-1-npiggin@gmail.com>
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>
---
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 9f574e59d178..2f162c6e52d4 100644
--- a/arch/powerpc/mm/slb.c
+++ b/arch/powerpc/mm/slb.c
@@ -355,7 +355,7 @@ 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;
--
2.18.0
next prev parent reply other threads:[~2018-09-14 15:31 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-14 15:30 [PATCH 00/12] SLB miss conversion to C, and SLB optimisations Nicholas Piggin
2018-09-14 15:30 ` Nicholas Piggin [this message]
2018-09-17 6:51 ` [PATCH 01/12] powerpc/64s/hash: Fix stab_rr off by one initialization Joel Stanley
2018-09-17 7:35 ` Nicholas Piggin
2018-09-20 4:21 ` [01/12] " Michael Ellerman
2018-09-14 15:30 ` [PATCH 02/12] powerpc/64s/hash: avoid the POWER5 < DD2.1 slb invalidate workaround on POWER8/9 Nicholas Piggin
2018-09-14 15:30 ` [PATCH 03/12] powerpc/64s/hash: move POWER5 < DD2.1 slbie workaround where it is needed Nicholas Piggin
2018-09-16 22:06 ` kbuild test robot
2018-09-17 6:00 ` Aneesh Kumar K.V
2018-09-17 8:39 ` Nicholas Piggin
2018-09-14 15:30 ` [PATCH 04/12] powerpc/64s/hash: remove the vmalloc segment from the bolted SLB Nicholas Piggin
2018-09-14 15:30 ` [PATCH 05/12] powerpc/64s/hash: Use POWER6 SLBIA IH=1 variant in switch_slb Nicholas Piggin
2018-09-17 6:08 ` Aneesh Kumar K.V
2018-09-17 8:42 ` Nicholas Piggin
2018-09-14 15:30 ` [PATCH 06/12] powerpc/64s/hash: Use POWER9 SLBIA IH=3 " Nicholas Piggin
2018-09-14 15:30 ` [PATCH 07/12] powerpc/64s/hash: convert SLB miss handlers to C Nicholas Piggin
2018-09-14 15:30 ` [PATCH 08/12] powerpc/64s/hash: remove user SLB data from the paca Nicholas Piggin
2018-09-14 15:30 ` [PATCH 09/12] powerpc/64s/hash: SLB allocation status bitmaps Nicholas Piggin
2018-09-14 15:30 ` [PATCH 10/12] powerpc/64s: xmon do not dump hash fields when using radix mode Nicholas Piggin
2018-09-14 15:30 ` [PATCH 11/12] powerpc/64s/hash: provide arch_setup_exec hooks for hash slice setup Nicholas Piggin
2018-09-14 15:30 ` [PATCH 12/12] powerpc/64s/hash: Add a SLB preload cache Nicholas Piggin
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