From mboxrd@z Thu Jan  1 00:00:00 1970
From: Leo Yan <leo.yan@linaro.org>
Subject: Re: [PATCH kvmtool v3 0/3] vfio-pci: Support INTx mode re-enabling
Date: Wed, 3 Apr 2019 11:58:17 +0800
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 <20190402165025.GA1442@fuggles.cambridge.arm.com>
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Cc: kvm@vger.kernel.org, Marc Zyngier <marc.zyngier@arm.com>,
 Robin Murphy <robin.murphy@arm.com>, kvmarm@lists.cs.columbia.edu
To: Will Deacon <will.deacon@arm.com>
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Hi Will,

On Tue, Apr 02, 2019 at 05:50:25PM +0100, Will Deacon wrote:
> 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
> 
> ?

Yes, this patch series is v3 and the link you pointed out is the old
patch series v1.  Sorry for confusion.

Thanks,
Leo Yan