Re: [patch] pci: revert "PCI: remove transparent bridge sizing" | KernelTrap

Re: [patch] pci: revert "PCI: remove transparent bridge sizing"

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From: Alan Cox <alan@...>

To: Linus Torvalds <torvalds@...>

Cc: Benjamin Herrenschmidt <benh@...>, Ivan Kokshaysky <ink@...>, Gary Hade <garyhade@...>, Ingo Molnar <mingo@...>, Thomas Meyer <thomas@...>, Stefan Richter <stefanr@...>, Thomas Gleixner <tglx@...>, Rafael J. Wysocki <rjw@...>, LKML <linux-kernel@...>, Adrian Bunk <bunk@...>, Andrew Morton <akpm@...>, Natalie Protasevich <protasnb@...>, <pm@...>

Subject: Re: [patch] pci: revert "PCI: remove transparent bridge sizing"

Date: Wednesday, March 26, 2008 - 6:47 pm

> I dunno. I'm not going to do anything in this area before 2.6.25 is out 
quoted text> because this *does* make me a bit nervous, but if somebody wants to think 
> about this and perhaps write patches for testing, that would be good.

One way to kill off some of the assumptions and gunge would be to add
pci_resource_assigned(resource) [or indeed just resource_assigned()].
Iomap has similar problems - we have no portable defined "not mapped" at
the moment, although we use NULL technically mmio maps of 0 end up at 0
in the implementation today.

Alan
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Messages in current thread:

2.6.25-rc6-git6: Reported regressions from 2.6.24, Rafael J. Wysocki, (Fri Mar 21, 9:59 pm)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Linus Torvalds, (Mon Mar 31, 2:21 pm)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Mark Lord, (Mon Mar 31, 3:29 pm)

2.6.25-rc7/8: Another resume regression, Mark Lord, (Thu Apr 3, 3:06 pm)

Re: 2.6.25-rc7/8: Another resume regression, Mark Lord, (Fri Apr 4, 10:27 pm)

Re: 2.6.25-rc7/8: Another resume regression, Rafael J. Wysocki, (Mon Apr 7, 6:51 am)

Re: 2.6.25-rc7/8: Another resume regression, Mark Lord, (Mon Apr 7, 11:51 am)

Re: 2.6.25-rc7/8: Another resume regression, Rafael J. Wysocki, (Mon Apr 7, 1:40 pm)

Re: 2.6.25-rc7/8: Another resume regression, Mark Lord, (Tue Apr 8, 11:35 am)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Tino Keitel, (Mon Mar 31, 5:04 pm)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Tino Keitel, (Mon Mar 31, 5:26 pm)

ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Reporte..., Stefan Richter, (Sat Mar 22, 12:34 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Thomas Meyer, (Sat Mar 22, 1:24 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Stefan Richter, (Sat Mar 22, 2:27 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Stefan Richter, (Sat Mar 22, 3:02 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Linus Torvalds, (Sat Mar 22, 5:33 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Thomas Gleixner, (Sat Mar 22, 5:58 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Linus Torvalds, (Sat Mar 22, 7:01 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Thomas Meyer, (Mon Mar 24, 3:58 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Linus Torvalds, (Mon Mar 24, 4:50 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Stefan Richter, (Mon Mar 24, 5:24 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Stefan Richter, (Mon Mar 24, 5:47 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Ingo Molnar, (Tue Mar 25, 3:31 am)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Ingo Molnar, (Tue Mar 25, 12:50 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Thomas Meyer, (Tue Mar 25, 2:32 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Ingo Molnar, (Tue Mar 25, 4:11 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Thomas Meyer, (Tue Mar 25, 5:02 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Ingo Molnar, (Tue Mar 25, 4:29 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Thomas Meyer, (Tue Mar 25, 5:08 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Linus Torvalds, (Tue Mar 25, 5:47 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Thomas Meyer, (Tue Mar 25, 6:02 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Ivan Kokshaysky, (Wed Mar 26, 6:14 am)

[patch] pci: revert "PCI: remove transparent bridge sizing", Ingo Molnar, (Wed Mar 26, 9:54 am)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Thomas Meyer, (Wed Mar 26, 1:45 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Gary Hade, (Wed Mar 26, 2:07 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Linus Torvalds, (Wed Mar 26, 2:33 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Gary Hade, (Wed Mar 26, 4:30 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Linus Torvalds, (Wed Mar 26, 4:46 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Ivan Kokshaysky, (Wed Mar 26, 4:58 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Linus Torvalds, (Wed Mar 26, 5:41 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Ivan Kokshaysky, (Wed Mar 26, 7:29 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Benjamin Herrenschmidt, (Wed Mar 26, 7:45 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Linus Torvalds, (Wed Mar 26, 7:43 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Linus Torvalds, (Thu Mar 27, 1:12 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Ivan Kokshaysky, (Thu Mar 27, 6:18 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Gary Hade, (Fri Mar 28, 3:24 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Gary Hade, (Fri Mar 28, 4:46 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Ivan Kokshaysky, (Sun Mar 30, 11:44 am)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Linus Torvalds, (Thu Mar 27, 6:34 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Benjamin Herrenschmidt, (Wed Mar 26, 5:57 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Linus Torvalds, (Wed Mar 26, 6:31 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Alan Cox, (Wed Mar 26, 6:47 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Benjamin Herrenschmidt, (Wed Mar 26, 7:17 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Ingo Molnar, (Wed Mar 26, 6:10 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Benjamin Herrenschmidt, (Wed Mar 26, 6:29 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Linus Torvalds, (Wed Mar 26, 6:47 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Benjamin Herrenschmidt, (Wed Mar 26, 6:54 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Benjamin Herrenschmidt, (Wed Mar 26, 7:18 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Ingo Molnar, (Wed Mar 26, 6:30 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Alan Cox, (Wed Mar 26, 6:07 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Benjamin Herrenschmidt, (Wed Mar 26, 6:27 pm)

Re: [patch] pci: revert "PCI: remove transparent bridge sizi..., Ingo Molnar, (Wed Mar 26, 5:29 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Benjamin Herrenschmidt, (Wed Mar 26, 8:17 am)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Ivan Kokshaysky, (Wed Mar 26, 7:12 am)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Stefan Richter, (Tue Mar 25, 1:06 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Stefan Richter, (Sat Mar 22, 7:50 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Ingo Molnar, (Sun Mar 23, 2:35 am)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Thomas Meyer, (Mon Mar 24, 3:34 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Ingo Molnar, (Mon Mar 24, 3:47 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Thomas Meyer, (Mon Mar 24, 4:17 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Linus Torvalds, (Mon Mar 24, 4:47 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Benjamin Herrenschmidt, (Tue Mar 25, 11:39 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Benjamin Herrenschmidt, (Wed Mar 26, 7:25 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., H. Peter Anvin, (Sat Mar 22, 5:59 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Yinghai Lu, (Sat Mar 22, 7:28 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., H. Peter Anvin, (Sat Mar 22, 7:31 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Yinghai Lu, (Sat Mar 22, 10:00 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., H. Peter Anvin, (Sat Mar 22, 10:39 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Yinghai Lu, (Sat Mar 22, 11:30 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Stefan Richter, (Sat Mar 22, 6:27 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Benjamin Herrenschmidt, (Tue Mar 25, 7:33 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Yinghai Lu, (Tue Mar 25, 8:03 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Benjamin Herrenschmidt, (Tue Mar 25, 8:12 pm)

Re: ohci1394 problem (MMIO broken) (was 2.6.25-rc6-git6: Rep..., Rafael J. Wysocki, (Sat Mar 22, 1:58 pm)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Jeff Garzik, (Fri Mar 21, 10:52 pm)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Ingo Molnar, (Sat Mar 22, 7:11 am)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Ray Lee, (Wed Mar 26, 12:30 pm)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Romano Giannetti, (Thu Mar 27, 6:18 am)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Ray Lee, (Thu Mar 27, 10:43 am)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Rafael J. Wysocki, (Wed Mar 26, 6:11 pm)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Adrian Bunk, (Wed Mar 26, 1:02 pm)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Alan Cox, (Sun Mar 23, 8:57 am)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Heiko Carstens, (Sat Mar 22, 12:32 pm)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Rafael J. Wysocki, (Sat Mar 22, 1:56 pm)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Andrew Morton, (Sat Mar 22, 1:33 am)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Ingo Molnar, (Sat Mar 22, 7:15 am)

Re: 2.6.25-rc6-git6: Reported regressions from 2.6.24, Rafael J. Wysocki, (Sat Mar 22, 1:53 pm)

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