RE: [PATCH V5 00/11] vfio/pci: Support dynamic allocation of MSI-X interrupts

From: Tian, Kevin
Date: Tue May 16 2023 - 22:16:12 EST


> From: Alex Williamson <alex.williamson@xxxxxxxxxx>
> Sent: Wednesday, May 17, 2023 6:53 AM
>
> On Thu, 11 May 2023 08:44:27 -0700
> Reinette Chatre <reinette.chatre@xxxxxxxxx> wrote:
>
> > Changes since V4:
> > - V4:
> https://lore.kernel.org/lkml/cover.1682615447.git.reinette.chatre@xxxxxxxxx
> /
> > - Add Kevin's Reviewed-by tag as applicable.
> > - Treat non-existing INTx interrupt context as kernel bug with WARN. This
> > exposed an issue in the scenario where INTx mask/unmask may occur
> without
> > INTx enabled. This is fixed by obtaining the interrupt context later
> > (right before use) within impacted functions: vfio_pci_intx_mask() and
> > vfio_pci_intx_unmask_handler(). (Kevin)
> > - Treat pci_irq_vector() returning '0' for a MSI/MSI-X interrupt as a kernel
> > bug via a WARN instead of ignoring this value. (Kevin)
> > - Improve accuracy of comments. (Kevin)
> > - Please refer to individual patches for local changes.
>
> Looks good to me.
>
> Kevin, do you want to add any additional reviews or check the changes
> made based on your previous comments?
>

Good to me too. I've given the remaining reviewed-by's.