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From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Michael Ellerman <mpe@ellerman.id.au>
Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v9 02/20] powerpc/8xx: Remove PTE_ATOMIC_UPDATES
Date: Thu, 29 Nov 2018 14:06:49 +0000 (UTC)	[thread overview]
Message-ID: <9a6ee14e9ab57d1141f55db6593b349f761eef2d.1543499861.git.christophe.leroy@c-s.fr> (raw)
In-Reply-To: <cover.1543499860.git.christophe.leroy@c-s.fr>

commit 1bc54c03117b9 ("powerpc: rework 4xx PTE access and TLB miss")
introduced non atomic PTE updates and started the work of removing
PTE updates in TLB miss handlers, but kept PTE_ATOMIC_UPDATES for the
8xx with the following comment:
/* Until my rework is finished, 8xx still needs atomic PTE updates */

commit fe11dc3f9628e ("powerpc/8xx: Update TLB asm so it behaves as
linux mm expects") removed all PTE updates done in TLB miss handlers

Therefore, atomic PTE updates are not needed anymore for the 8xx

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
 arch/powerpc/include/asm/nohash/32/pte-8xx.h | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/powerpc/include/asm/nohash/32/pte-8xx.h b/arch/powerpc/include/asm/nohash/32/pte-8xx.h
index 6bfe041ef59d..c9e4b2d90f65 100644
--- a/arch/powerpc/include/asm/nohash/32/pte-8xx.h
+++ b/arch/powerpc/include/asm/nohash/32/pte-8xx.h
@@ -65,9 +65,6 @@
 
 #define _PTE_NONE_MASK	0
 
-/* Until my rework is finished, 8xx still needs atomic PTE updates */
-#define PTE_ATOMIC_UPDATES	1
-
 #ifdef CONFIG_PPC_16K_PAGES
 #define _PAGE_PSIZE	_PAGE_SPS
 #else
-- 
2.13.3


  parent reply	other threads:[~2018-11-29 14:06 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-29 14:06 [PATCH v9 00/20] Implement use of HW assistance on TLB table walk on 8xx Christophe Leroy
2018-11-29 14:06 ` [PATCH v9 01/20] powerpc/book3s32: Remove CONFIG_BOOKE dependent code Christophe Leroy
2018-12-07 13:06   ` [v9,01/20] " Michael Ellerman
2018-11-29 14:06 ` Christophe Leroy [this message]
2018-11-29 14:06 ` [PATCH v9 03/20] powerpc/mm: Move pte_fragment_alloc() to a common location Christophe Leroy
2018-11-29 14:06 ` [PATCH v9 04/20] powerpc/mm: Avoid useless lock with single page fragments Christophe Leroy
2018-11-29 14:06 ` [PATCH v9 05/20] powerpc/mm: move platform specific mmu-xxx.h in platform directories Christophe Leroy
2018-11-29 14:06 ` [PATCH v9 06/20] powerpc/mm: Move pgtable_t into platform headers Christophe Leroy
2018-11-29 14:06 ` [PATCH v9 07/20] powerpc/mm: add helpers to get/set mm.context->pte_frag Christophe Leroy
2018-11-29 14:07 ` [PATCH v9 08/20] powerpc/mm: Extend pte_fragment functionality to PPC32 Christophe Leroy
2018-11-29 14:07 ` [PATCH v9 09/20] powerpc/mm: enable the use of page table cache of order 0 Christophe Leroy
2018-11-29 14:07 ` [PATCH v9 10/20] powerpc/mm: replace hugetlb_cache by PGT_CACHE(PTE_T_ORDER) Christophe Leroy
2018-11-29 14:07 ` [PATCH v9 11/20] powerpc/mm: fix a warning when a cache is common to PGD and hugepages Christophe Leroy
2018-11-29 14:07 ` [PATCH v9 12/20] powerpc/mm: remove unnecessary test in pgtable_cache_init() Christophe Leroy
2018-11-29 14:07 ` [PATCH v9 13/20] powerpc/8xx: Move SW perf counters in first 32kb of memory Christophe Leroy
2018-11-29 14:07 ` [PATCH v9 14/20] powerpc/8xx: Temporarily disable 16k pages and hugepages Christophe Leroy
2018-11-29 14:07 ` [PATCH v9 15/20] powerpc/8xx: Use hardware assistance in TLB handlers Christophe Leroy
2018-11-29 14:07 ` [PATCH v9 16/20] powerpc/8xx: Enable 8M hugepage support with HW assistance Christophe Leroy
2018-11-29 14:07 ` [PATCH v9 17/20] powerpc/8xx: Enable 512k " Christophe Leroy
2018-11-29 14:07 ` [PATCH v9 18/20] powerpc/8xx: reintroduce 16K pages " Christophe Leroy
2018-11-29 14:07 ` [PATCH v9 19/20] powerpc/8xx: don't use r12/SPRN_SPRG_SCRATCH2 in TLB Miss handlers Christophe Leroy
2018-11-29 14:07 ` [PATCH v9 20/20] powerpc/8xx: regroup TLB handler routines Christophe Leroy

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