diff options
| author | Alistair Popple <[email protected]> | 2025-06-19 08:58:03 +0000 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2025-07-10 05:42:18 +0000 |
| commit | d438d273417055241ebaaf1ba3be23459fc27cba (patch) | |
| tree | a192770f41a7f38ccecdd3f69a0db07218816e6f /arch/riscv/include/asm/pgtable-bits.h | |
| parent | fs/dax: remove FS_DAX_LIMITED config option (diff) | |
| download | kernel-d438d273417055241ebaaf1ba3be23459fc27cba.tar.gz kernel-d438d273417055241ebaaf1ba3be23459fc27cba.zip | |
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 <[email protected]>
Acked-by: Will Deacon <[email protected]> # arm64
Acked-by: David Hildenbrand <[email protected]>
Suggested-by: Chunyan Zhang <[email protected]>
Reviewed-by: Björn Töpel <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Cc: Balbir Singh <[email protected]>
Cc: Björn Töpel <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Dan Williams <[email protected]>
Cc: Deepak Gupta <[email protected]>
Cc: Gerald Schaefer <[email protected]>
Cc: Inki Dae <[email protected]>
Cc: John Groves <[email protected]>
Cc: John Hubbard <[email protected]>
Cc: Lorenzo Stoakes <[email protected]>
Cc: Matthew Wilcox (Oracle) <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'arch/riscv/include/asm/pgtable-bits.h')
| -rw-r--r-- | arch/riscv/include/asm/pgtable-bits.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/riscv/include/asm/pgtable-bits.h b/arch/riscv/include/asm/pgtable-bits.h index a8f5205cea54..179bd4afece4 100644 --- a/arch/riscv/include/asm/pgtable-bits.h +++ b/arch/riscv/include/asm/pgtable-bits.h @@ -19,7 +19,6 @@ #define _PAGE_SOFT (3 << 8) /* Reserved for software */ #define _PAGE_SPECIAL (1 << 8) /* RSW: 0x1 */ -#define _PAGE_DEVMAP (1 << 9) /* RSW, devmap */ #define _PAGE_TABLE _PAGE_PRESENT /* |