diff options
Diffstat (limited to 'arch/arm64/mm/init.c')
| -rw-r--r-- | arch/arm64/mm/init.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 4cb98aa8c27b..224238943aff 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -118,9 +118,11 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max) } #ifdef CONFIG_HAVE_ARCH_PFN_VALID +#define PFN_MASK ((1UL << (64 - PAGE_SHIFT)) - 1) + int pfn_valid(unsigned long pfn) { - return memblock_is_memory(pfn << PAGE_SHIFT); + return (pfn & PFN_MASK) == pfn && memblock_is_memory(pfn << PAGE_SHIFT); } EXPORT_SYMBOL(pfn_valid); #endif |