diff options
Diffstat (limited to 'arch/blackfin/include/asm/mmu_context.h')
| -rw-r--r-- | arch/blackfin/include/asm/mmu_context.h | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/arch/blackfin/include/asm/mmu_context.h b/arch/blackfin/include/asm/mmu_context.h index ae8ef4ffd806..e1a9b4624f91 100644 --- a/arch/blackfin/include/asm/mmu_context.h +++ b/arch/blackfin/include/asm/mmu_context.h @@ -7,12 +7,13 @@ #ifndef __BLACKFIN_MMU_CONTEXT_H__ #define __BLACKFIN_MMU_CONTEXT_H__ -#include <linux/gfp.h> +#include <linux/slab.h> #include <linux/sched.h> #include <asm/setup.h> #include <asm/page.h> #include <asm/pgalloc.h> #include <asm/cplbinit.h> +#include <asm/sections.h> /* Note: L1 stacks are CPU-private things, so we bluntly disable this feature in SMP mode, and use the per-CPU scratch SRAM bank only to @@ -117,9 +118,16 @@ static inline void protect_page(struct mm_struct *mm, unsigned long addr, unsigned long flags) { unsigned long *mask = mm->context.page_rwx_mask; - unsigned long page = addr >> 12; - unsigned long idx = page >> 5; - unsigned long bit = 1 << (page & 31); + unsigned long page; + unsigned long idx; + unsigned long bit; + + if (unlikely(addr >= ASYNC_BANK0_BASE && addr < ASYNC_BANK3_BASE + ASYNC_BANK3_SIZE)) + page = (addr - (ASYNC_BANK0_BASE - _ramend)) >> 12; + else + page = addr >> 12; + idx = page >> 5; + bit = 1 << (page & 31); if (flags & VM_READ) mask[idx] |= bit; |