diff options
Diffstat (limited to 'arch/powerpc/include/asm/book3s/64/hash-4k.h')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/hash-4k.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/hash-4k.h b/arch/powerpc/include/asm/book3s/64/hash-4k.h index 54fab723a8c7..4c9dfd625461 100644 --- a/arch/powerpc/include/asm/book3s/64/hash-4k.h +++ b/arch/powerpc/include/asm/book3s/64/hash-4k.h @@ -13,6 +13,19 @@ */ #define MAX_EA_BITS_PER_CONTEXT 46 +/* + * Our page table limit us to 64TB. Hence for the kernel mapping, + * each MAP area is limited to 16 TB. + * The four map areas are: linear mapping, vmap, IO and vmemmap + */ +#define H_KERN_MAP_SIZE (ASM_CONST(1) << (MAX_EA_BITS_PER_CONTEXT - 2)) + +/* + * Define the address range of the kernel non-linear virtual area + * 16TB + */ +#define H_KERN_VIRT_START ASM_CONST(0xc000100000000000) + #ifndef __ASSEMBLY__ #define H_PTE_TABLE_SIZE (sizeof(pte_t) << H_PTE_INDEX_SIZE) #define H_PMD_TABLE_SIZE (sizeof(pmd_t) << H_PMD_INDEX_SIZE) |