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

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

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From: Jeff Garzik <jeff@...>

To: Linus Torvalds <torvalds@...>

Cc: Ivan Kokshaysky <ink@...>, Loic Prylli <loic@...>, Arjan van de Ven <arjan@...>, <linux-kernel@...>, <gregkh@...>, <linux-pci@...>, Benjamin Herrenschmidt <benh@...>

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

Date: Thursday, December 27, 2007 - 7:46 am

Linus Torvalds wrote:
quoted text> 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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Messages in current thread:

[patch] Make MMCONFIG space (extended PCI config space) a dr..., Arjan van de Ven, (Sat Dec 22, 8:31 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Benjamin Herrenschmidt, (Sat Dec 22, 4:43 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Sat Dec 22, 10:20 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Arjan van de Ven, (Sat Dec 22, 10:47 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Sat Dec 22, 9:34 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Linus Torvalds, (Sat Dec 22, 2:06 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Sat Dec 22, 9:26 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Linus Torvalds, (Sat Dec 22, 11:46 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Sun Dec 23, 12:13 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., H. Peter Anvin, (Sun Dec 23, 1:57 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Loic Prylli, (Sun Dec 23, 1:09 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Linus Torvalds, (Sun Dec 23, 12:40 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Martin Mares, (Sun Dec 23, 6:18 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Sun Dec 23, 12:18 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Linus Torvalds, (Sun Dec 23, 12:44 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Sun Dec 23, 1:04 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Linus Torvalds, (Sun Dec 23, 1:18 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Sun Dec 23, 1:22 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Sun Dec 23, 12:11 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Linus Torvalds, (Sun Dec 23, 12:35 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Sun Dec 23, 12:52 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Arjan van de Ven, (Sun Dec 23, 6:33 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Mon Dec 24, 3:04 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Arjan van de Ven, (Mon Dec 24, 7:49 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Mon Dec 24, 7:54 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Arjan van de Ven, (Mon Dec 24, 8:00 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Martin Mares, (Tue Dec 25, 5:22 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Martin Mares, (Tue Dec 25, 5:40 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Loic Prylli, (Sun Dec 23, 1:27 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Sun Dec 23, 1:44 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Benjamin Herrenschmidt, (Sun Dec 23, 5:13 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Ivan Kokshaysky, (Sun Dec 23, 7:03 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Mon Dec 24, 3:22 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Ivan Kokshaysky, (Mon Dec 24, 11:47 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Linus Torvalds, (Sun Dec 23, 1:32 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Mon Dec 24, 3:31 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Linus Torvalds, (Mon Dec 24, 2:51 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Thu Dec 27, 7:46 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Arjan van de Ven, (Thu Dec 27, 10:09 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Matthew Wilcox, (Mon Dec 24, 5:22 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Loic Prylli, (Sun Dec 23, 4:33 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Linus Torvalds, (Sun Dec 23, 1:00 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Benjamin Herrenschmidt, (Sun Dec 23, 5:09 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Martin Mares, (Sun Dec 23, 5:15 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Benjamin Herrenschmidt, (Sun Dec 23, 7:06 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Benjamin Herrenschmidt, (Sun Dec 23, 7:19 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Ivan Kokshaysky, (Sun Dec 23, 6:32 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Sun Dec 23, 1:09 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Martin Mares, (Sat Dec 22, 3:30 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Arjan van de Ven, (Sat Dec 22, 4:15 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Jeff Garzik, (Sat Dec 22, 9:29 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Martin Mares, (Sat Dec 22, 4:36 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Matthew Wilcox, (Sat Dec 22, 11:54 am)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Arjan van de Ven, (Sat Dec 22, 12:02 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Matthew Wilcox, (Sat Dec 22, 5:10 pm)

Re: [patch] Make MMCONFIG space (extended PCI config space) ..., Benjamin Herrenschmidt, (Sun Dec 23, 7:33 pm)

[patch] opt the sky2 driver into using extended config space, Arjan van de Ven, (Sat Dec 22, 8:35 am)

Re: [patch] opt the sky2 driver into using extended config s..., Stephen Hemminger, (Sat Dec 22, 4:28 pm)

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