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Re: [PATCH RESEND v2 0/3] To add HMP interface to dump PCI MSI-X table/P


From: Michael S. Tsirkin
Subject: Re: [PATCH RESEND v2 0/3] To add HMP interface to dump PCI MSI-X table/PBA
Date: Tue, 13 Jul 2021 16:59:52 -0400

On Mon, Jul 12, 2021 at 04:58:09PM -0700, Dongli Zhang wrote:
> I have just rebased the v2 patchset on top of most recent qemu to resend.
> 
> This patch is to introduce the new HMP command to dump the MSI-X table/PBA.
> 
> Here is the RFC v1:
> 
> https://lists.gnu.org/archive/html/qemu-devel/2021-04/msg04673.html
> 
> The idea was inspired by below discussion:
> 
> https://lists.gnu.org/archive/html/qemu-devel/2021-03/msg09020.html

Fails build for microblaze:

/scm/qemu/build/../softmmu/qdev-monitor.c:1030: undefined reference to 
`msix_dump_info'
collect2: error: ld returned 1 exit status
[2525/8445] Compiling C object 
libqemu-microblaze-softmmu.fa.p/meson-generated_.._qapi_qapi-visit-misc-target.c.o

> 
> (qemu) info msix -d /machine/peripheral/vscsi0
> Msg L.Addr Msg U.Addr Msg Data   Vect Ctrl
> 0xfee00000 0x00000000 0x00004041 0x00000000
> 0xfee00000 0x00000000 0x00004051 0x00000000
> 0xfee00000 0x00000000 0x00004061 0x00000000
> 0xfee00000 0x00000000 0x00004071 0x00000000
> 0xfee01000 0x00000000 0x000040b1 0x00000000
> 0xfee02000 0x00000000 0x000040c1 0x00000000
> 0xfee03000 0x00000000 0x000040d1 0x00000000
> 
> MSI-X PBA
> 0 0 0 0 0 0 0
> 
> virtio pci vector info:
> config: 0
> queue 0: 1
> queue 1: 2
> queue 2: 3
> queue 3: 4
> queue 4: 5
> queue 5: 6
> 
> 
> Changed since RFC v1:
>   - Add heading to MSI-X table (suggested by David Alan Gilbert)
>   - Add device specific interface, e.g., to dump virtio-pci queue-to-vector
>     mapping (Suggested By Jason)
> 
> 
>  hmp-commands-info.hx       | 14 +++++++++
>  hw/pci/msix.c              | 63 +++++++++++++++++++++++++++++++++++++++++
>  hw/virtio/virtio-pci.c     | 22 ++++++++++++++
>  hw/virtio/virtio.c         | 10 +++++++
>  include/hw/pci/msix.h      |  2 ++
>  include/hw/pci/pci.h       |  3 ++
>  include/hw/virtio/virtio.h |  2 ++
>  include/monitor/hmp.h      |  1 +
>  softmmu/qdev-monitor.c     | 36 +++++++++++++++++++++++
>  9 files changed, 153 insertions(+)
> 
> Thank you very much!
> 
> Dongli Zhang
> 




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