IIRC there were some endianess fixes for this in the past ... can you still reproduce this issue with the latest version of QEMU and a recent kernel? Or could we close this ticket nowadays?
** Changed in: qemu Status: New => Incomplete -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1546680 Title: Incorrect display colors when running big endian guest on POWER8 little endian host Status in QEMU: Incomplete Bug description: When running a big endian CentOS guest on a little endian host system the display shows severe color issues, probably due to endianness not being properly detected / switched in the emulated display hardware. Little endian guests show no display issues on the same host hardware and software. See attachment for an example of the problem. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1546680/+subscriptions