KEXEC_ENVP_SIZE
memcpy((void *)fw_arg2, kexec_envp, KEXEC_ENVP_SIZE);
memcpy((void *)fw_arg2, kexec_envp, KEXEC_ENVP_SIZE);
kexec_envp = kmalloc(KEXEC_ENVP_SIZE, GFP_KERNEL);
memcpy(kexec_envp, (void *)fw_arg2, KEXEC_ENVP_SIZE);