diff options
Diffstat (limited to 'arch/arm64/mm/init.c')
| -rw-r--r-- | arch/arm64/mm/init.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 9930190a4929..5b364af66a82 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -128,11 +128,13 @@ 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 (pfn & PFN_MASK) == pfn && memblock_is_map_memory(pfn << PAGE_SHIFT); + phys_addr_t addr = pfn << PAGE_SHIFT; + + if ((addr >> PAGE_SHIFT) != pfn) + return 0; + return memblock_is_memory(addr); } EXPORT_SYMBOL(pfn_valid); #endif |