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| author | Tony Lindgren <tony@atomide.com> | 2010-05-20 11:07:23 -0700 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2010-05-20 11:07:23 -0700 |
| commit | df760137ad3cbfa15ceed42478f81bff01b6e799 (patch) | |
| tree | be939c9d11094858d74141a4c62cb23f477754d8 /arch/mips/include/asm/pgtable-64.h | |
| parent | 754b8e653412106ff613f4750b197f807fcd8347 (diff) | |
| parent | de997718b64df2f766736f23f8557da450b83a25 (diff) | |
Merge branch 'omap-boards' into omap-for-linus
Diffstat (limited to 'arch/mips/include/asm/pgtable-64.h')
| -rw-r--r-- | arch/mips/include/asm/pgtable-64.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/mips/include/asm/pgtable-64.h b/arch/mips/include/asm/pgtable-64.h index 26dc69d792a..1be4b0fa30d 100644 --- a/arch/mips/include/asm/pgtable-64.h +++ b/arch/mips/include/asm/pgtable-64.h @@ -120,9 +120,14 @@ #endif #define FIRST_USER_ADDRESS 0UL -#define VMALLOC_START MAP_BASE +/* + * TLB refill handlers also map the vmalloc area into xuseg. Avoid + * the first couple of pages so NULL pointer dereferences will still + * reliably trap. + */ +#define VMALLOC_START (MAP_BASE + (2 * PAGE_SIZE)) #define VMALLOC_END \ - (VMALLOC_START + \ + (MAP_BASE + \ min(PTRS_PER_PGD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, \ (1UL << cpu_vmbits)) - (1UL << 32)) |