Re: [PATCH kvmtool v3 0/3] vfio-pci: Support INTx mode re-enabling

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Hi Leo,

On Tue, Mar 26, 2019 at 03:41:28PM +0800, Leo Yan wrote:
> When enable vfio-pci mode for NIC driver on Juno board, the IRQ is
> failed to forward properly from host to guest, finally root caused this
> issue is related with kvmtool cannot re-enable INTx mode properly.
> 
> So the basic working flow to reproduce this issue is as below:
> 
>     Host             Guest
> -------------  --------------------
>   INTx mode
>                  MSI enable failed in NIC driver
>                  MSI disable in NIC driver
>                  Switch back to INTx mode --> kvmtool doesn't support
> 
> So this patch is to support INTx mode re-enabling; patch 0001 is one
> minor fixing up for eventfd releasing; patch 0002 introduces a new
> function vfio_pci_init_intx() which is used to finish INTx one-time
> initialisation; patch 0003 is the core patch for support INTx mode
> re-enabling, when kvmtool detects MSI is disabled it rollbacks to INTx
> mode.
> 
> This patch set has been tested on Juno-r2 board.
> 
> == Changes for V3 ==
> * Add new function vfio_pci_init_intx() for one-time initialisation.
> * Simplized INTx re-enabling (don't change irq_line anymore at the
>   runtime).

Just checking, but is this series intended to supersede this one:

https://www.spinics.net/lists/kvm/msg183750.html

?

Thanks,

Will
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