Re: [PATCH] msi-x: let drivers retry when not enough vectors

[Michael S. Tsirkin]

On Thu, May 07, 2009 at 05:10:46PM +0800, Sheng Yang wrote:
> > > I think driver should read from capability list to know how many vector
> > > supported by this device before enable MSI-X for device, as
> > > pci_msix_table_size() did...
> >
> > Drivers can do this, but it's more code. Since pci_enable_msix
> > calls pci_msix_table_size already, let it do the work. Right?
> 
> If you don't know the vectors number before you enable MSI-X, how can you 
> setup vectors? 

I don't know how many irqs I will be able to get anyway.
vectors that can't be assigned are useless ...

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