[PATCH v4 5/5] drm/ofdrm: Support big-endian scanout buffers

Arnd Bergmann arnd at arndb.de
Wed Oct 12 18:44:39 AEDT 2022


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.

    Arnd


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