VFP_MAGIC
kframe.magic = VFP_MAGIC;
if (frame.magic != VFP_MAGIC || frame.size != VFP_STORAGE_SIZE)
compat_ulong_t magic = VFP_MAGIC;
if (magic != VFP_MAGIC || size != VFP_STORAGE_SIZE)
compat_ulong_t magic = VFP_MAGIC;