Re: [patch] Make MMCONFIG space (extended PCI config space) a driver opt-in issue

Jeff Garzik
2007-12-24T11:54:46Z

Arjan van de Ven wrote:
> I can see the point of having a sysfs attribute to enable MMCONF from userspace, so
> that userland diagnostics tools can turn it on if they really really want to.
> (I'd make that printk a nice warning "application XYZ is enabling extended config space for devize ABC" so
> that if the box then crashes and burns, people know who/why and where to direct their emails ;-)
>
> We did something similar for "enable", it's maybe 10 lines of code or so.
>
> I would assume lspci and friends would then only turn that on at explicit admin request

Absolutely... I'm not asking to default it on, just asking for it to be
possible :)

Jeff