diff options
| author | Alistair Popple <apopple@nvidia.com> | 2025-06-19 18:58:03 +1000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-07-09 22:42:18 -0700 |
| commit | d438d273417055241ebaaf1ba3be23459fc27cba (patch) | |
| tree | a192770f41a7f38ccecdd3f69a0db07218816e6f /Documentation/mm | |
| parent | 28dc88c39ecfe7de5033fa05cdd24fd1a9f8267d (diff) | |
mm: remove devmap related functions and page table bits
Now that DAX and all other reference counts to ZONE_DEVICE pages are
managed normally there is no need for the special devmap PTE/PMD/PUD page
table bits. So drop all references to these, freeing up a software
defined page table bit on architectures supporting it.
Link: https://lkml.kernel.org/r/6389398c32cc9daa3dfcaa9f79c7972525d310ce.1750323463.git-series.apopple@nvidia.com
Signed-off-by: Alistair Popple <apopple@nvidia.com>
Acked-by: Will Deacon <will@kernel.org> # arm64
Acked-by: David Hildenbrand <david@redhat.com>
Suggested-by: Chunyan Zhang <zhang.lyra@gmail.com>
Reviewed-by: Björn Töpel <bjorn@rivosinc.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Cc: Balbir Singh <balbirs@nvidia.com>
Cc: Björn Töpel <bjorn@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Deepak Gupta <debug@rivosinc.com>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Inki Dae <m.szyprowski@samsung.com>
Cc: John Groves <john@groves.net>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/mm')
| -rw-r--r-- | Documentation/mm/arch_pgtable_helpers.rst | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/Documentation/mm/arch_pgtable_helpers.rst b/Documentation/mm/arch_pgtable_helpers.rst index af245161d8e7..c88c7fa665d6 100644 --- a/Documentation/mm/arch_pgtable_helpers.rst +++ b/Documentation/mm/arch_pgtable_helpers.rst @@ -30,8 +30,6 @@ PTE Page Table Helpers +---------------------------+--------------------------------------------------+ | pte_protnone | Tests a PROT_NONE PTE | +---------------------------+--------------------------------------------------+ -| pte_devmap | Tests a ZONE_DEVICE mapped PTE | -+---------------------------+--------------------------------------------------+ | pte_soft_dirty | Tests a soft dirty PTE | +---------------------------+--------------------------------------------------+ | pte_swp_soft_dirty | Tests a soft dirty swapped PTE | @@ -104,8 +102,6 @@ PMD Page Table Helpers +---------------------------+--------------------------------------------------+ | pmd_protnone | Tests a PROT_NONE PMD | +---------------------------+--------------------------------------------------+ -| pmd_devmap | Tests a ZONE_DEVICE mapped PMD | -+---------------------------+--------------------------------------------------+ | pmd_soft_dirty | Tests a soft dirty PMD | +---------------------------+--------------------------------------------------+ | pmd_swp_soft_dirty | Tests a soft dirty swapped PMD | @@ -177,8 +173,6 @@ PUD Page Table Helpers +---------------------------+--------------------------------------------------+ | pud_write | Tests a writable PUD | +---------------------------+--------------------------------------------------+ -| pud_devmap | Tests a ZONE_DEVICE mapped PUD | -+---------------------------+--------------------------------------------------+ | pud_mkyoung | Creates a young PUD | +---------------------------+--------------------------------------------------+ | pud_mkold | Creates an old PUD | |