diff options
Diffstat (limited to 'include/asm-xtensa/pgtable.h')
| -rw-r--r-- | include/asm-xtensa/pgtable.h | 41 |
1 files changed, 1 insertions, 40 deletions
diff --git a/include/asm-xtensa/pgtable.h b/include/asm-xtensa/pgtable.h index b4318934b10d..2d4b5db6ea63 100644 --- a/include/asm-xtensa/pgtable.h +++ b/include/asm-xtensa/pgtable.h @@ -14,45 +14,6 @@ #include <asm-generic/pgtable-nopmd.h> #include <asm/page.h> -/* Assertions. */ - -#ifdef CONFIG_MMU - - -#if (XCHAL_MMU_RINGS < 2) -# error Linux build assumes at least 2 ring levels. -#endif - -#if (XCHAL_MMU_CA_BITS != 4) -# error We assume exactly four bits for CA. -#endif - -#if (XCHAL_MMU_SR_BITS != 0) -# error We have no room for SR bits. -#endif - -/* - * Use the first min-wired way for mapping page-table pages. - * Page coloring requires a second min-wired way. - */ - -#if (XCHAL_DTLB_MINWIRED_SETS == 0) -# error Need a min-wired way for mapping page-table pages -#endif - -#define DTLB_WAY_PGTABLE XCHAL_DTLB_SET(XCHAL_DTLB_MINWIRED_SET0, WAY) - -#if (DCACHE_WAY_SIZE > PAGE_SIZE) && XCHAL_DCACHE_IS_WRITEBACK -# if XCHAL_DTLB_SET(XCHAL_DTLB_MINWIRED_SET0, WAYS) >= 2 -# define DTLB_WAY_DCACHE_ALIAS0 (DTLB_WAY_PGTABLE + 1) -# define DTLB_WAY_DCACHE_ALIAS1 (DTLB_WAY_PGTABLE + 2) -# else -# error Page coloring requires its own wired dtlb way! -# endif -#endif - -#endif /* CONFIG_MMU */ - /* * We only use two ring levels, user and kernel space. */ @@ -97,7 +58,7 @@ #define PGD_ORDER 0 #define PMD_ORDER 0 #define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE) -#define FIRST_USER_ADDRESS XCHAL_SEG_MAPPABLE_VADDR +#define FIRST_USER_ADDRESS 0 #define FIRST_USER_PGD_NR (FIRST_USER_ADDRESS >> PGDIR_SHIFT) /* virtual memory area. We keep a distance to other memory regions to be |