linux-kernel - [PATCH v2 00/15] arch: make PxD

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Date:   Tue,  5 Jul 2022 18:46:53 +0300
From:   Mike Rapoport <rppt@...nel.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Arnd Bergmann <arnd@...db.de>, Dinh Nguyen <dinguyen@...nel.org>,
        Guo Ren <guoren@...nel.org>, Helge Deller <deller@....de>,
        Huacai Chen <chenhuacai@...nel.org>,
        "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
        Matthew Wilcox <willy@...radead.org>,
        Max Filippov <jcmvbkbc@...il.com>,
        Mike Rapoport <rppt@...nel.org>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        "Russell King (Oracle)" <linux@...linux.org.uk>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        WANG Xuerui <kernel@...0n.name>, linux-arch@...r.kernel.org,
        linux-csky@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-mm@...ck.org,
        linux-parisc@...r.kernel.org, linux-xtensa@...ux-xtensa.org,
        loongarch@...ts.linux.dev
Subject: [PATCH v2 00/15] arch: make PxD_ORDER generically available

From: Mike Rapoport <rppt@...ux.ibm.com>

v2 changes:
* Drop extra blank line in arch/loongarch/kernel/asm-offsets.c (patch 12)
* Add patch 15 that renames PMD_ORDER to PMD_ENTRY_ORDER in
  arch/arm/kernel/head.S
v1: https://lore.kernel.org/all/20220703141203.147893-1-rppt@kernel.org 

v1 cover letter:

The question what does PxD_ORDER define raises from time to time and
there is still a conflict between MIPS and DAX definitions.

Some time ago Matthew Wilcox suggested to use PMD_TABLE_ORDER to define
the order of page table allocation: 

[1] https://lore.kernel.org/linux-arch/YPCJftSTUBEnq2lI@casper.infradead.org/

The parisc patch made it in, but mips didn't. 
Now mips defines from asm/include/pgtable.h were copied to loongarch which
made it worse.

Let's deal with it once and for all and rename PxD_ORDER defines to
PxD_TABLE_ORDER or just drop them when the only possible order of page
table is 0.

I think the best way to merge this via mm tree with acks from arch
maintainers.

Matthew Wilcox (Oracle) (1):
  mips: Rename PMD_ORDER to PMD_TABLE_ORDER

Mike Rapoport (14):
  csky: drop definition of PTE_ORDER
  csky: drop definition of PGD_ORDER
  mips: Rename PUD_ORDER to PUD_TABLE_ORDER
  mips: drop definitions of PTE_ORDER
  mips: Rename PGD_ORDER to PGD_TABLE_ORDER
  nios2: drop definition of PTE_ORDER
  nios2: drop definition of PGD_ORDER
  loongarch: drop definition of PTE_ORDER
  loongarch: drop definition of PMD_ORDER
  loongarch: drop definition of PUD_ORDER
  loongarch: drop definition of PGD_ORDER
  parisc: Rename PGD_ORDER to PGD_TABLE_ORDER
  xtensa: drop definition of PGD_ORDER
  ARM: head.S: rename PMD_ORDER to PMD_ENTRY_ORDER

 arch/arm/kernel/head.S               | 34 ++++++++--------
 arch/csky/include/asm/pgalloc.h      |  2 +-
 arch/csky/include/asm/pgtable.h      |  6 +--
 arch/loongarch/include/asm/pgalloc.h |  6 +--
 arch/loongarch/include/asm/pgtable.h | 27 +++++-------
 arch/loongarch/kernel/asm-offsets.c  |  6 ---
 arch/loongarch/mm/pgtable.c          |  2 +-
 arch/loongarch/mm/tlbex.S            |  6 +--
 arch/mips/include/asm/pgalloc.h      |  8 ++--
 arch/mips/include/asm/pgtable-32.h   | 19 ++++-----
 arch/mips/include/asm/pgtable-64.h   | 61 +++++++++++++---------------
 arch/mips/kernel/asm-offsets.c       |  5 ---
 arch/mips/kvm/mmu.c                  |  2 +-
 arch/mips/mm/pgtable.c               |  2 +-
 arch/mips/mm/tlbex.c                 | 14 +++----
 arch/nios2/include/asm/pgtable.h     |  7 +---
 arch/nios2/mm/init.c                 |  5 +--
 arch/nios2/mm/pgtable.c              |  2 +-
 arch/parisc/include/asm/pgalloc.h    |  6 +--
 arch/parisc/include/asm/pgtable.h    |  8 ++--
 arch/xtensa/include/asm/pgalloc.h    |  2 +-
 arch/xtensa/include/asm/pgtable.h    |  1 -
 22 files changed, 101 insertions(+), 130 deletions(-)


base-commit: 03c765b0e3b4cb5063276b086c76f7a612856a9a
-- 
2.34.1