diff options
| author | Mark Brown <broonie@kernel.org> | 2025-09-12 00:54:56 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2025-09-12 00:54:56 +0100 |
| commit | 9ca01e9226dbbb523b49b4e583e1d522977b4fe6 (patch) | |
| tree | 630b0bbaf8c27dfb24c42570ec6e399700a4e662 /include/linux/pgtable.h | |
| parent | 2c625f0fe2db4e6a58877ce2318df3aa312eb791 (diff) | |
| parent | 6a129b2ca5c533aec89fbeb58470811cc4102642 (diff) | |
support for Amlogic SPI Flash Controller IP
Merge series from Xianwei Zhao <xianwei.zhao@amlogic.com>:
This Flash Controller is derived by adding an SPI path to the original
raw NAND controller. This controller supports two modes: raw mode and
SPI mode. The raw mode has already been implemented in the community
(drivers/mtd/nand/raw/meson_nand.c).
This submission supports the SPI mode.
Add the drivers and bindings corresponding to the SPI Flash Controller.
Diffstat (limited to 'include/linux/pgtable.h')
| -rw-r--r-- | include/linux/pgtable.h | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index 4c035637eeb7..2b80fd456c8b 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -1467,6 +1467,22 @@ static inline void modify_prot_commit_ptes(struct vm_area_struct *vma, unsigned } #endif +/* + * Architectures can set this mask to a combination of PGTBL_P?D_MODIFIED values + * and let generic vmalloc, ioremap and page table update code know when + * arch_sync_kernel_mappings() needs to be called. + */ +#ifndef ARCH_PAGE_TABLE_SYNC_MASK +#define ARCH_PAGE_TABLE_SYNC_MASK 0 +#endif + +/* + * There is no default implementation for arch_sync_kernel_mappings(). It is + * relied upon the compiler to optimize calls out if ARCH_PAGE_TABLE_SYNC_MASK + * is 0. + */ +void arch_sync_kernel_mappings(unsigned long start, unsigned long end); + #endif /* CONFIG_MMU */ /* @@ -1938,10 +1954,11 @@ static inline bool arch_has_pfn_modify_check(void) /* * Page Table Modification bits for pgtbl_mod_mask. * - * These are used by the p?d_alloc_track*() set of functions an in the generic - * vmalloc/ioremap code to track at which page-table levels entries have been - * modified. Based on that the code can better decide when vmalloc and ioremap - * mapping changes need to be synchronized to other page-tables in the system. + * These are used by the p?d_alloc_track*() and p*d_populate_kernel() + * functions in the generic vmalloc, ioremap and page table update code + * to track at which page-table levels entries have been modified. + * Based on that the code can better decide when page table changes need + * to be synchronized to other page-tables in the system. */ #define __PGTBL_PGD_MODIFIED 0 #define __PGTBL_P4D_MODIFIED 1 |