linux.git/arch/mips/include/asm/pgtable-64.h, branch v6.6.13

mips: implement the new page table range API

2023-08-24T23:20:22+00:00

Rename _PFN_SHIFT to PFN_PTE_SHIFT.  Convert a few places
to call set_pte() instead of set_pte_at().  Add set_ptes(),
update_mmu_cache_range(), flush_icache_pages() and flush_dcache_folio().
Change the PG_arch_1 (aka PG_dcache_dirty) flag from being per-page
to per-folio.

Link: https://lkml.kernel.org/r/20230802151406.3735276-18-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) 
Acked-by: Mike Rapoport (IBM) 
Cc: Thomas Bogendoerfer 
Signed-off-by: Andrew Morton

mips/mm: support __HAVE_ARCH_PTE_SWP_EXCLUSIVE

2023-02-03T06:33:08+00:00

Let's support __HAVE_ARCH_PTE_SWP_EXCLUSIVE.

On 64bit, steal one bit from the type.  Generic MM currently only uses 5
bits for the type (MAX_SWAPFILES_SHIFT), so the stolen bit is effectively
unused.

On 32bit we're able to locate unused bits.  As the PTE layout for 32 bit
is very confusing, document it a bit better.

While at it, mask the type in __swp_entry()/mk_swap_pte().

Link: https://lkml.kernel.org/r/20230113171026.582290-13-david@redhat.com
Signed-off-by: David Hildenbrand 
Cc: Thomas Bogendoerfer 
Signed-off-by: Andrew Morton

MIPS&LoongArch&NIOS2: adjust prototypes of p?d_init()

2022-12-12T02:12:11+00:00

Patch series "mm/sparse-vmemmap: Generalise helpers and enable for
LoongArch", v14.

This series is in order to enable sparse-vmemmap for LoongArch.  But
LoongArch cannot use generic helpers directly because MIPS&LoongArch need
to call pgd_init()/pud_init()/pmd_init() when populating page tables.  So
we adjust the prototypes of p?d_init() to make generic helpers can call
them, then enable sparse-vmemmap with generic helpers, and to be further,
generalise vmemmap_populate_hugepages() for ARM64, X86 and LoongArch.


This patch (of 4):

We are preparing to add sparse vmemmap support to LoongArch.  MIPS and
LoongArch need to call pgd_init()/pud_init()/pmd_init() when populating
page tables, so adjust their prototypes to make generic helpers can call
them.

NIOS2 declares pmd_init() but doesn't use, just remove it to avoid build
errors.

Link: https://lkml.kernel.org/r/20221027125253.3458989-1-chenhuacai@loongson.cn
Link: https://lkml.kernel.org/r/20221027125253.3458989-2-chenhuacai@loongson.cn
Signed-off-by: Feiyang Chen 
Signed-off-by: Huacai Chen 
Reviewed-by: Jiaxun Yang 
Reviewed-by: Philippe Mathieu-Daudé 
Reviewed-by: Arnd Bergmann 
Cc: Andy Lutomirski 
Cc: Catalin Marinas 
Cc: Dave Hansen 
Cc: Dinh Nguyen 
Cc: Guo Ren 
Cc: Peter Zijlstra 
Cc: Thomas Bogendoerfer 
Cc: Will Deacon 
Cc: Xuefeng Li 
Cc: Xuerui Wang 
Cc: Min Zhou 
Cc: Muchun Song 
Signed-off-by: Andrew Morton

Merge tag 'mips_6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

2022-08-06T23:47:19+00:00

Pull MIPS updates from Thomas Bogendoerfer:

 - added support for Netgear WNR3500L v2

 - removed support for VR41xx SoC and platforms based on it

 - cleanups and fixes

* tag 'mips_6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (25 commits)
  MIPS: tlbex: Explicitly compare _PAGE_NO_EXEC against 0
  Revert "MIPS: octeon: Remove vestiges of CONFIG_CAVIUM_RESERVE32"
  MIPS: Introduce CAVIUM_RESERVE32 Kconfig option
  MIPS: msi-octeon: eliminate kernel-doc warnings
  MIPS: Fix comment typo
  MIPS: BMIPS: Utilize cfe_die() for invalid DTB
  MIPS: CFE: Add cfe_die()
  MIPS: Fixed __debug_virt_addr_valid()
  MIPS: BCM47XX: Add support for Netgear WNR3500L v2
  MIPS: Remove VR41xx support
  MIPS: dts: align gpio-key node names with dtschema
  MIPS: dts: correct gpio-keys names and properties
  MIPS: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK
  MIPS: Make phys_to_virt utilize __va()
  MIPS: vdso: Utilize __pa() for gic_pfn
  MIPS: mm: Use the bitmap API to allocate bitmaps
  MIPS: math-emu: Use the bitmap API to allocate bitmaps
  MIPS: Loongson64: Fix section mismatch warning
  mips: cavium-octeon: Fix missing of_node_put() in octeon2_usb_clocks_start
  MIPS: mscc: ocelot: enable FDMA usage
  ...

mips: rename PGD_ORDER to PGD_TABLE_ORDER

2022-07-18T00:14:42+00:00

This is the order of the page table allocation, not the order of a PGD.

While at it remove unused defintion of _PGD_ORDER in asm-offsets.

Link: https://lkml.kernel.org/r/20220703141203.147893-7-rppt@kernel.org
Signed-off-by: Mike Rapoport 
Cc: Arnd Bergmann 
Cc: Dinh Nguyen 
Cc: Guo Ren 
Cc: Helge Deller 
Cc: Huacai Chen 
Cc: James Bottomley 
Cc: "Matthew Wilcox (Oracle)" 
Cc: Max Filippov 
Cc: Thomas Bogendoerfer 
Cc: Xuerui Wang 
Signed-off-by: Andrew Morton

mips: drop definitions of PTE_ORDER

2022-07-18T00:14:42+00:00

This is the order of the page table allocation, not the order of a PTE. 
Since its always hardwired to 0, simply drop it.

Link: https://lkml.kernel.org/r/20220703141203.147893-6-rppt@kernel.org
Signed-off-by: Mike Rapoport 
Cc: Arnd Bergmann 
Cc: Dinh Nguyen 
Cc: Guo Ren 
Cc: Helge Deller 
Cc: Huacai Chen 
Cc: James Bottomley 
Cc: "Matthew Wilcox (Oracle)" 
Cc: Max Filippov 
Cc: Thomas Bogendoerfer 
Cc: Xuerui Wang 
Signed-off-by: Andrew Morton

mips: rename PUD_ORDER to PUD_TABLE_ORDER

2022-07-18T00:14:42+00:00

This is the order of the page table allocation, not the order of a PUD.

Link: https://lkml.kernel.org/r/20220703141203.147893-5-rppt@kernel.org
Signed-off-by: Mike Rapoport 
Cc: Arnd Bergmann 
Cc: Dinh Nguyen 
Cc: Guo Ren 
Cc: Helge Deller 
Cc: Huacai Chen 
Cc: James Bottomley 
Cc: "Matthew Wilcox (Oracle)" 
Cc: Max Filippov 
Cc: Thomas Bogendoerfer 
Cc: Xuerui Wang 
Signed-off-by: Andrew Morton

mips: rename PMD_ORDER to PMD_TABLE_ORDER

2022-07-18T00:14:42+00:00

This is the order of the page table allocation, not the order of a PMD.

While at it remove unused defintion of _PMD_ORDER in asm-offsets.

Link: https://lkml.kernel.org/r/20220703141203.147893-4-rppt@kernel.org
Signed-off-by: Matthew Wilcox (Oracle) 
Signed-off-by: Mike Rapoport 
Cc: Arnd Bergmann 
Cc: Dinh Nguyen 
Cc: Guo Ren 
Cc: Helge Deller 
Cc: Huacai Chen 
Cc: James Bottomley 
Cc: Max Filippov 
Cc: Thomas Bogendoerfer 
Cc: Xuerui Wang 
Signed-off-by: Andrew Morton

MIPS: Remove VR41xx support

2022-07-14T09:52:29+00:00

No (active) developer owns this hardware, so let's remove Linux support.

Signed-off-by: Thomas Bogendoerfer

mm: rename p4d_page_vaddr to p4d_pgtable and make it return pud_t *

2021-07-08T18:48:22+00:00

No functional change in this patch.

[aneesh.kumar@linux.ibm.com: m68k build error reported by kernel robot]
  Link: https://lkml.kernel.org/r/87tulxnb2v.fsf@linux.ibm.com

Link: https://lkml.kernel.org/r/20210615110859.320299-2-aneesh.kumar@linux.ibm.com
Link: https://lore.kernel.org/linuxppc-dev/CAHk-=wi+J+iodze9FtjM3Zi4j4OeS+qqbKxME9QN4roxPEXH9Q@mail.gmail.com/
Signed-off-by: Aneesh Kumar K.V 
Cc: Christophe Leroy 
Cc: Hugh Dickins 
Cc: Joel Fernandes 
Cc: Kalesh Singh 
Cc: Kirill A. Shutemov 
Cc: Michael Ellerman 
Cc: Nicholas Piggin 
Cc: Stephen Rothwell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds