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Re: [Xen-devel] Linux 4.5's nfp_net_irq_unmask_msix() vs Xen

Hello Jan.

On Tue, 22 Mar 2016 05:29:54 -0600, Jan Beulich wrote:
> All,
> the new driver homed under drivers/net/ethernet/netronome/nfp/
> has some direct MSI-X table manipulation which quite clearly is
> incompatible with Xen. According to the comment preceding the
> function, bypassing the Linux IRQ subsystem is intentional here.
> Irrespective of the question of whether that's a good idea, this
> also bypassing the abstractions allowing MSI to work on Xen
> clearly needs addressing. Does anyone have any thoughts on how
> to reasonably achieve this? Calling pci_msi_unmask_irq() would
> seem to be an option (the symbol at least is exported), but likely
> isn't intended to be used that way.

Did you check the driver code before sending this?  I think you may
be referring to something which was removed months ago (and never


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