Re: [kvm-unit-tests GIT PULL 00/14] s390x: new maintainer, refactor linker scripts, tests for misalignments, execute-type instructions and vSIE epdx

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Quoting Thomas Huth (2023-03-31 15:17:33)
> On 31/03/2023 13.30, Nico Boehr wrote:
> > Hi Paolo and/or Thomas,
> > 
> > here comes the first pull request from me. :)
> 
> Thanks!
> 
> ... I gave it a try, but I'm hitting a failure in the spec_ex test:
> 
> $ cat logs/spec_ex.log
> timeout -k 1s --foreground 90s qemu-system-s390x -nodefaults -nographic -machine s390-ccw-virtio,accel=kvm -chardev stdio,id=con0 -device sclpconsole,chardev=con0 -kernel s390x/spec_ex.elf -smp 1 # -initrd /tmp/tmp.cxHP06rT1F
> PASS: specification exception: psw_bit_12_is_1: Program interrupt: expected(6) == received(6)
> PASS: specification exception: short_psw_bit_12_is_0: Program interrupt: expected(6) == received(6)
> FAIL: specification exception: psw_odd_address: Expected exception due to invalid PSW
> PASS: specification exception: odd_ex_target: did not perform ex with odd target
> PASS: specification exception: odd_ex_target: Program interrupt: expected(6) == received(6)
> PASS: specification exception: bad_alignment_lqp: Program interrupt: expected(6) == received(6)
> PASS: specification exception: bad_alignment_lrl: Program interrupt: expected(6) == received(6)
> PASS: specification exception: not_even: Program interrupt: expected(6) == received(6)
> PASS: specification exception during transaction: odd_ex_target: Program interrupt: expected(518) == received(518)
> PASS: specification exception during transaction: bad_alignment_lqp: Program interrupt: expected(518) == received(518)
> PASS: specification exception during transaction: bad_alignment_lrl: Program interrupt: expected(518) == received(518)
> PASS: specification exception during transaction: not_even: Program interrupt: expected(518) == received(518)
> SUMMARY: 12 tests, 1 unexpected failures
> 
> EXIT: STATUS=3
> 
> I'm sure I'm missing something, I just cannot figure it out right
> now (it's Friday afternoon...) - QEMU is the current version from
> the master branch, so I thought that it should contain all the
> recent fixes ... does this psw_odd_address test require a fix in
> the kernel, too? (I'm currently running a RHEL9 kernel)

Thomas, I cannot reproduce this with a QEMU master and 6.3-rc4, so you might be right that some kernel fix is required.

Since the weekend is calling now, I will take a look at this on Monday.




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