PAI_CRYPTO_KERNEL_OFFSET
WRITE_ONCE(get_lowcore()->ccd, get_lowcore()->ccd | PAI_CRYPTO_KERNEL_OFFSET);
WRITE_ONCE(get_lowcore()->ccd, get_lowcore()->ccd & ~PAI_CRYPTO_KERNEL_OFFSET);
.kernel_offset = PAI_CRYPTO_KERNEL_OFFSET,
ccd = virt_to_phys(cpump->area) | PAI_CRYPTO_KERNEL_OFFSET;