diff options
Diffstat (limited to 'arch/mips/mm/mmap.c')
| -rw-r--r-- | arch/mips/mm/mmap.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/mips/mm/mmap.c b/arch/mips/mm/mmap.c index 2f616ebeb7e0..d79f2b432318 100644 --- a/arch/mips/mm/mmap.c +++ b/arch/mips/mm/mmap.c @@ -201,8 +201,13 @@ unsigned long arch_randomize_brk(struct mm_struct *mm) return ret; } -int __virt_addr_valid(const volatile void *kaddr) +bool __virt_addr_valid(const volatile void *kaddr) { + unsigned long vaddr = (unsigned long)kaddr; + + if ((vaddr < PAGE_OFFSET) || (vaddr >= MAP_BASE)) + return false; + return pfn_valid(PFN_DOWN(virt_to_phys(kaddr))); } EXPORT_SYMBOL_GPL(__virt_addr_valid); |