Re: [PATCH] vfio/pci: make MSI handling optional

From: Arnd Bergmann
Date: Mon Oct 13 2014 - 07:03:16 EST

On Monday 13 October 2014 02:50:08 Alex Williamson wrote:
> Why wouldn't we handle this with stubs for `get_cached_msi_msg' and
> `write_msi_msg'? We're really not talking about much code that might
> get removed by the compiler with this static branch and and it seems
> like a rather non-standard mechanism. The count of MSI/X IRQs
> advertised to the user should be zero without CONFIG_MSI and later range
> checks would prevent calls to
> these functions for invalid indexes, so it's a bit of a random test in
> the code flow. Thanks,

That's fine with me too.

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