diff options
Diffstat (limited to 'arch/arm64/include/asm/pgtable.h')
| -rw-r--r-- | arch/arm64/include/asm/pgtable.h | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 9f862e6e9286..ec82789d03c3 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -33,13 +33,16 @@ /* * VMALLOC and SPARSEMEM_VMEMMAP ranges. + * + * VMEMAP_SIZE: allows the whole VA space to be covered by a struct page array + * (rounded up to PUD_SIZE). + * VMALLOC_START: beginning of the kernel VA space + * VMALLOC_END: extends to the available space below vmmemmap, PCI I/O space, + * fixed mappings and modules */ +#define VMEMMAP_SIZE ALIGN((1UL << (VA_BITS - PAGE_SHIFT)) * sizeof(struct page), PUD_SIZE) #define VMALLOC_START (UL(0xffffffffffffffff) << VA_BITS) -#if CONFIG_ARM64_PGTABLE_LEVELS != 4 -#define VMALLOC_END (PAGE_OFFSET - UL(0x400000000) - SZ_64K) -#else -#define VMALLOC_END (PAGE_OFFSET - UL(0x40000000000) - SZ_64K) -#endif +#define VMALLOC_END (PAGE_OFFSET - PUD_SIZE - VMEMMAP_SIZE - SZ_64K) #define vmemmap ((struct page *)(VMALLOC_END + SZ_64K)) |
