Re: LTP test related to virtio releasing and reassigning resource leads to guest hung

[Michael Tokarev]

10.08.2023 11:57, longguang.yue wrote:
> Hi, all:
> A ltp test leads to guest hung(io hung), the test releases virtio device resource and then reassign.
> I find device’s mem prefetchable resource 64-bit is changed.
>
> ltp 
> test: https://github.com/linux-test-project/ltp/blob/522d7fba4afc84e07b252aa4cd91b241e81d6613/testcases/kernel/device-drivers/pci/tpci_kernel/ltp_tpci.c#L428
>
> Do you know what cause the problem?
>
> Thanks very much.
>
> --------------------------
> ENV: kernel 5.10.0, qemu 6.2

Current qemu is 8.1 (well, almost, to be released this month;
previous release is 8.0 anyway).

This might be interesting to test in a current version before
going any further.

Thanks,

/mjt