Hi Am 12.10.22 um 09:44 schrieb Arnd Bergmann:
On Wed, Oct 12, 2022, at 9:40 AM, Thomas Zimmermann wrote:Am 12.10.22 um 09:17 schrieb Arnd Bergmann:On Wed, Oct 12, 2022, at 8:46 AM, Thomas Zimmermann wrote:Does qemu mark the device has having a particular endianess then, or does it switch the layout of the framebuffer to match what the CPU does?The latter. On neither architecture does qemu expose this flag. The default endianess corresponds to the host."host" as in the machine that qemu runs on, or the machine that is being emulated? I suppose it would be broken either way, but in the latter case, we could get away with detecting that the machine is running under qemu.
Sorry, my mistake. I meant "guest": the endianess of the framebuffer corresponds to the endianess of the emulated machine. Given that many graphics cards support LE and BE modes, I assume that this behavior mimics real-hardware systems.
Best regards Thomas
Arnd
-- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Maxfeldstr. 5, 90409 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Ivo Totev
Attachment:
OpenPGP_signature
Description: OpenPGP digital signature
