On 04.06.2026 11:56, Miao Wang wrote:
Hi, all
I can reproduce this test failure locally. I believe the reason is that the
implementation of the pvscsi device in qemu is broken when the endianness of
the guest and the host differs.
It can be easily seen in the driver code of pvscsi that the command data is
sent through a register in units of 32bits in the native endianness. In the
qemu emulated device code, however, although qemu has done the endianness
translation of the registers, the command data is received as a data stream
and filled into a buffer. When a field of a command data struct is 64bits long,
the upper 32 bits and the lower 32 bits will be flipped resulting the
mis-interpretation of the command data.
Oh wow.
Can you post this to the qemu mailing list please?
That sounds like a big issue.
Thanks,
/mjt
