diff options
Diffstat (limited to 'arch/sparc/include')
| -rw-r--r-- | arch/sparc/include/asm/page_64.h | 20 |
1 files changed, 6 insertions, 14 deletions
diff --git a/arch/sparc/include/asm/page_64.h b/arch/sparc/include/asm/page_64.h index 978ea6d022e9..89e07fd0ac88 100644 --- a/arch/sparc/include/asm/page_64.h +++ b/arch/sparc/include/asm/page_64.h @@ -112,24 +112,16 @@ typedef pte_t *pgtable_t; #include <asm-generic/memory_model.h> -#endif /* !(__ASSEMBLY__) */ - -/* We used to stick this into a hard-coded global register (%g4) - * but that does not make sense anymore. - */ -#define MAX_SUPPORTED_PA_BITS 43 #define PAGE_OFFSET_BY_BITS(X) (-(_AC(1,UL) << (X))) -#define PAGE_OFFSET PAGE_OFFSET_BY_BITS(MAX_SUPPORTED_PA_BITS) +extern unsigned long PAGE_OFFSET; -/* The "virtual" portion of PAGE_OFFSET, used to clip off the non-physical - * bits of a linear kernel address. - */ -#define PAGE_OFFSET_VA_BITS (64 - MAX_SUPPORTED_PA_BITS) +#endif /* !(__ASSEMBLY__) */ -/* The actual number of physical memory address bits we support, this is - * used to size various tables used to manage kernel TLB misses. +/* The maximum number of physical memory address bits we support, this + * is used to size various tables used to manage kernel TLB misses and + * also the sparsemem code. */ -#define MAX_PHYS_ADDRESS_BITS 41 +#define MAX_PHYS_ADDRESS_BITS 47 /* These two shift counts are used when indexing sparc64_valid_addr_bitmap * and kpte_linear_bitmap. |