[PATCH RFC 0/1] To add HMP interface to dump PCI MSI-X table/PBA

[Dongli Zhang]

This is inspired by the discussion with Jason on below patchset.

https://lists.gnu.org/archive/html/qemu-devel/2021-03/msg09020.html

The new HMP command is introduced to dump the MSI-X table and PBA.

Initially, I was going to add new option to "info pci". However, as the
number of entries is not determined and the output of MSI-X table is much
more similar to the output of hmp_info_tlb()/hmp_info_mem(), this patch
adds interface for only HMP.

The patch is tagged with RFC because I am looking for suggestions on:

1. Is it fine to add new "info msix <dev>" command?

2. Is there any issue with output format?

3. Is it fine to add only for HMP, but not QMP?

Thank you very much!

Dongli Zhang