Linus Torvalds wrote:
Well, the *current* behaviour as far as setup is concerned is
unacceptable. But yes, longer term, we should be able to just have quirk
entries for saying "enable mmconfig because I know it's safe", except we
should not enable them until after the core PCI probing has completed.
IMO that should be an arch decision, buried somewhere in arch/x86.
If other arches implement extended config space sanely -- and possibly
via some arch-specific means that is /not/ mmconfig -- then they should
be able to make an arch decision that extended PCI config space accesses
Just Work(tm).
For such arches, pci_enable_ext_cfg_space(pdev) would be a no-op, always
returning success.
Jeff
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