XE_CACHELINE_BYTES
#define XE_CACHELINE_MASK (XE_CACHELINE_BYTES - 1)
!IS_ALIGNED(page_offset, XE_CACHELINE_BYTES) ||
!IS_ALIGNED(offset, XE_CACHELINE_BYTES))) {
BUILD_BUG_ON(!is_power_of_2(XE_CACHELINE_BYTES));
bounce = kmalloc(XE_CACHELINE_BYTES, GFP_KERNEL);
XE_CACHELINE_BYTES -
XE_CACHELINE_BYTES, 0);
XE_CACHELINE_BYTES, write);
XE_CACHELINE_BYTES));