On Wed, Apr 24, 2019 at 09:16:56AM +0800, Li Qiang wrote: > Thomas Huth <th...@redhat.com> 于2019年4月24日周三 上午12:29写道: > > > Is this endianess-safe? Or do you need to byteswap reboot_timeout if the > > host and guest endianess does not match? > > Good question! > > IIUC, the qemu fw_cfg store the 'file' entry data just in byte stream.
No. Integers are defined to be little endian. See fw_cfg_add_i64() for example, there is an explicit cpu_to_le64() call for that. cheers, Gerd