Re: [PATCH 01/10] Add driver auto probing for x86 features

[H. Peter Anvin]

On 12/09/2011 12:16 PM, Jean Delvare wrote:
> 
> Irrelevant. You load a driver when any, not all, of the devices in the
> system are supported by said driver. This obviously holds for PCI
> devices and drivers (you don't refrain from loading the network card's
> driver because that driver doesn't support your graphics card), the CPU
> device case is no different (in theory at least.)
> 

Well, it is, actually.  We do a whole lot of tests using boot_cpu_has(),
which really isn't about the boot CPU at all but rather is the
intersection of all features supported by all the CPUs in the system.

There are, however, a handful of drivers which want to be loaded for
"any matching CPU" as opposed to "all matching CPUs" and I guess it
would be useful to have that capability as an alternative.

	-hpa
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