Re: [PATCH v9 12/18] vfio: Register/unregister irq_bypass_producer

[Paolo Bonzini]

On 21/09/2015 10:56, Wu, Feng wrote:
> Hi Paolo & Alex,
> 
> I find that there is a build error in the following two cases:
> - KVM is configured as 'M' and VFIO as 'Y'
> The reason is the build of irqbypass manager is triggered in
> arch/x86/kvm/Makefile, and VFIO is built before KVM, hence
> it cannot find the symbols in irqbypass manager.
> 
> - Disable KVM and enable VFIO in .config
> The reason is similar with the above one, the irqbypass manager
> is not built since KVM is not configured.
> 
> I think the point is that we cannot trigger the build of irqbypass
> manager inside KVM or VFIO, we need trigger the build at a high
> level and it should be built before VFIO and KVM. Any ideas?

We can add virt/Makefile and build virt/lib/ directly, not through
arch/x86/kvm.

Paolo
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