Re: KVM_ASSIGN_SET_MSIX_NR and KVM_ASSIGN_SET_MSIX_ENTRY should support MSI?

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On Tue, May 05, 2009 at 01:30:28PM +0300, Michael S. Tsirkin wrote:
> The new KVM_ASSIGN_SET_MSIX_NR and KVM_ASSIGN_SET_MSIX_ENTRY ioctls have
> been merged for 2.6.30. However, I note that PCI spec allows devices to
> support multiple vectors with MSI as well (support will be in linux
> 2.6.30).
> 
> Even though qemu for now only uses a single vector with MSI, it would
> seem that it's better to make the kernel/user interface generic straight
> away rather than add more ioctls later. What do you think? It might not
> be too late to fix this for 2.6.30.

Can't you use more than one KVM_ASSIGN_SET_MSIX_ENTRY call per assigned
device?

If you can't, it would be better to change the ioctls before 2.6.30 is
release IMO.


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