[PATCH v2 00/15] arch: make PxD_ORDER generically available

From: Mike Rapoport <rppt@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>, Dinh Nguyen <dinguyen@kernel.org>,
	Guo Ren <guoren@kernel.org>, Helge Deller <deller@gmx.de>,
	Huacai Chen <chenhuacai@kernel.org>,
	"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
	Matthew Wilcox <willy@infradead.org>,
	Max Filippov <jcmvbkbc@gmail.com>,
	Mike Rapoport <rppt@kernel.org>,
	Mike Rapoport <rppt@linux.ibm.com>,
	"Russell King (Oracle)" <linux@armlinux.org.uk>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	WANG Xuerui <kernel@xen0n.name>,
	linux-arch@vger.kernel.org, linux-csky@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org,
	linux-mm@kvack.org, linux-parisc@vger.kernel.org,
	linux-xtensa@linux-xtensa.org, loongarch@lists.linux.dev
Subject: [PATCH v2 00/15] arch: make PxD_ORDER generically available
Date: Tue,  5 Jul 2022 18:46:53 +0300	[thread overview]
Message-ID: <20220705154708.181258-1-rppt@kernel.org> (raw)

From: Mike Rapoport <rppt@linux.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