diff options
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/include/asm/page.h | 2 | ||||
| -rw-r--r-- | arch/ia64/mm/init.c | 31 |
2 files changed, 33 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/page.h b/arch/ia64/include/asm/page.h index f1e1b2e3cdb3..1f1bf144fe62 100644 --- a/arch/ia64/include/asm/page.h +++ b/arch/ia64/include/asm/page.h @@ -231,4 +231,6 @@ get_order (unsigned long size) #define PERCPU_ADDR (-PERCPU_PAGE_SIZE) #define LOAD_OFFSET (KERNEL_START - KERNEL_TR_PAGE_SIZE) +#define __HAVE_ARCH_GATE_AREA 1 + #endif /* _ASM_IA64_PAGE_H */ diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c index 892d43e32f3b..6b3345758d3e 100644 --- a/arch/ia64/mm/init.c +++ b/arch/ia64/mm/init.c @@ -278,6 +278,37 @@ setup_gate (void) ia64_patch_gate(); } +static struct vm_area_struct gate_vma; + +static int __init gate_vma_init(void) +{ + gate_vma.vm_mm = NULL; + gate_vma.vm_start = FIXADDR_USER_START; + gate_vma.vm_end = FIXADDR_USER_END; + gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC; + gate_vma.vm_page_prot = __P101; + + return 0; +} +__initcall(gate_vma_init); + +struct vm_area_struct *get_gate_vma(struct mm_struct *mm) +{ + return &gate_vma; +} + +int in_gate_area_no_mm(unsigned long addr) +{ + if ((addr >= FIXADDR_USER_START) && (addr < FIXADDR_USER_END)) + return 1; + return 0; +} + +int in_gate_area(struct mm_struct *mm, unsigned long addr) +{ + return in_gate_area_no_mm(addr); +} + void ia64_mmu_init(void *my_cpu_data) { unsigned long pta, impl_va_bits; |