lots of "bridge window ... (disabled)" messages
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From: Luck, Tony on 29 Mar 2010 13:00 Hi Bjorn, I just booted Linus latest git tree on my Tukwila system. I'm seeing a lot of bridge windows marked as disabled. Here's the start of a diff of dmesg output comparing a kernel from last week to today's kernel (git 01e7770 vs. b72c409): < pci 0000:00:01.0: bridge window [mem 0xfff00000 - 000fffff pref] reg reading --- > pci 0000:00:01.0: bridge window [mem 0xfff00000-0x000fffff pref] (disabled) 222,224c222,224 < pci 0000:00:03.0: bridge window [io f000 - 0000] reg reading < pci 0000:00:03.0: bridge window [mem 0xfff00000 - 0x000fffff] reg reading < pci 0000:00:03.0: bridge window [mem 0xfff00000 - 000fffff pref] reg reading --- > pci 0000:00:03.0: bridge window [io 0xf000-0x0000] (disabled) > pci 0000:00:03.0: bridge window [mem 0xfff00000-0x000fffff] (disabled) > pci 0000:00:03.0: bridge window [mem 0xfff00000-0x000fffff pref] (disabled) 233c233 < pci 0000:00:05.0: bridge window [mem 0xfff00000 - 000fffff pref] reg reading --- > pci 0000:00:05.0: bridge window [mem 0xfff00000-0x000fffff pref] (disabled) ... many more such diffs. This is the same system that you helped out with a couple of months ago that had some issues in _CRS tables with ranges marked as "consumer". The BIOS team fixed the one range that was needed to allow access to my EHCI - but they didn't touch anything else. Are these new checks related to the same sort of issues in _CRS? Or is this some other stuff? I don't appear to have lost access to any devices in today's kernel. -Tony -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Bjorn Helgaas on 29 Mar 2010 18:10
On Mon, 2010-03-29 at 09:57 -0700, Luck, Tony wrote: > Hi Bjorn, > > I just booted Linus latest git tree on my Tukwila system. I'm > seeing a lot of bridge windows marked as disabled. Here's the > start of a diff of dmesg output comparing a kernel from last > week to today's kernel (git 01e7770 vs. b72c409): > > < pci 0000:00:01.0: bridge window [mem 0xfff00000 - 000fffff pref] reg reading > --- > > pci 0000:00:01.0: bridge window [mem 0xfff00000-0x000fffff pref] (disabled) Nothing changed here except the message. The bridge windows are disabled in both cases (same values in base & limit, with base > limit); I just changed the message from "reg reading" to "(disabled)" because I thought that would be easier to interpret. Bjorn -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |