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. As a suggestion, I think pvscsi should be disabled on cross-endianness qemu builds before the implementation is fixed in upstream and the test of OVMF.legacy.fd on amd64 virtual machines on s390x should be disabled. Cheers, Miao Wang
