Re: pci_enable_msi() for everyone?

[Benjamin Herrenschmidt]

> Honestly I can think of situations where one driver would want a bit per 
> BAR, and many others would just need a single MMIO bit.  Don't forget 
> legacy decoding too:  with -only- a bit per BAR, the driver cannot tell 
> the PCI layer that disabling IO means disabling a legacy ISA region 
> that's not listed in the PCI BARs.

VGA is too much of a special case here. I'm currently working on a VGA
arbitrer but it will need a separate API (along with a userland
interface). Maybe the kernel side of this API could be folded in that
pci_enable() thing though, I'll have to give it a though...

Ben.


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