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Message-Id: <200812022338.51284.rjw@sisk.pl> Date: Tue, 2 Dec 2008 23:38:50 +0100 From: "Rafael J. Wysocki" <rjw@...k.pl> To: Linus Torvalds <torvalds@...ux-foundation.org> Cc: Frans Pop <elendil@...net.nl>, greg@...ah.com, mingo@...e.hu, jbarnes@...tuousgeek.org, lenb@...nel.org, linux-kernel@...r.kernel.org, tiwai@...e.de, akpm@...ux-foundation.org Subject: Re: Regression from 2.6.26: Hibernation (possibly suspend) broken on Toshiba R500 (bisected) On Tuesday, 2 of December 2008, Linus Torvalds wrote: > > That's why I'd like to see what the layout differences are for Rafael with > and without his patch (and also both before and after hibernate/resume). > Maybe both layouts are "correct", but the non-working one can give us a > clue about what may be triggering the problem. OK Sorry for the delay, it took me more time than expected to generate all the data. * dmesg output including one hibernation-resume cycle from 2.6.28-rc7 with the debug patch (appended for completness): http://www.sisk.pl/kernel/debug/mainline/2.6.28-rc7/dmesg-rc7-patched-prep.log * dmesg output including one hibernation-resume cycle from 2.6.28-rc7 without the debug patch: http://www.sisk.pl/kernel/debug/mainline/2.6.28-rc7/dmesg-rc7-nopatch-prep.log * diff between the two: http://www.sisk.pl/kernel/debug/mainline/2.6.28-rc7/dmesg-rc7_nopatch-rc7_patched.diff This part of the diff (+ is the patched one) seems to be particularly interesting to me, especially the overlapping MEM windows for 0000:00:1e.0 and 0000:03:0b.0 (may that be the reason for the observed failures?): @@ -276,0 +277,4 @@ +bad alignment flags 21200 4000000 (0) +pci 0000:03:0b.0: BAR 9 bad alignment 0: [0x000000-0x3ffffff] +bad alignment flags 20200 4000000 (0) +pci 0000:03:0b.0: BAR 10 bad alignment 0: [0x000000-0x3ffffff] @@ -288,2 +291,0 @@ -pci 0000:03:0b.0: PREFETCH window: 0x88000000-0x8bffffff -pci 0000:03:0b.0: MEM window: 0x8c000000-0x8fffffff @@ -292,2 +294,2 @@ -pci 0000:00:1e.0: MEM window: 0x8c000000-0x91ffffff -pci 0000:00:1e.0: PREFETCH window: 0x00000088000000-0x0000008bffffff +pci 0000:00:1e.0: MEM window: 0x88000000-0x880fffff +pci 0000:00:1e.0: PREFETCH window: disabled @@ -312,2 +314,2 @@ -bus: 03 index 1 mmio: [0x8c000000-0x91ffffff] -bus: 03 index 2 mmio: [0x88000000-0x8bffffff] +bus: 03 index 1 mmio: [0x88000000-0x880fffff] +bus: 03 index 2 mmio: [0x0-0x0] @@ -318,2 +320,2 @@ -bus: 04 index 2 mmio: [0x88000000-0x8bffffff] -bus: 04 index 3 mmio: [0x8c000000-0x8fffffff] +bus: 04 index 2 mmio: [0x0-0x3ffffff] +bus: 04 index 3 mmio: [0x0-0x3ffffff] * the output of 'lspci -vv' http://www.sisk.pl/kernel/debug/mainline/2.6.28-rc7/lspci-vv.txt * diff between /proc/iomem between 2.6.28-rc7 without and with the patch (+ is from the patched kernel): diff -U 0 -r rc7-nopatch//iomem rc7-patched//iomem --- rc7-nopatch//iomem 2008-12-02 22:57:34.000000000 +0100 +++ rc7-patched//iomem 2008-12-02 23:07:02.000000000 +0100 @@ -7,2 +7,2 @@ - 00200000-00450496 : Kernel code - 00450497-00603c37 : Kernel data + 00200000-00450526 : Kernel code + 00450527-00603c37 : Kernel data @@ -14,15 +14,14 @@ -88000000-8bffffff : PCI Bus 0000:03 - 88000000-8bffffff : PCI CardBus 0000:04 -8c000000-91ffffff : PCI Bus 0000:03 - 8c000000-8fffffff : PCI CardBus 0000:04 - 90000000-90003fff : 0000:03:0b.1 - 90004000-90004fff : 0000:03:0b.0 - 90004000-90004fff : yenta_socket - 90005000-900057ff : 0000:03:0b.1 - 90005000-900057ff : firewire_ohci - 90005800-900058ff : 0000:03:0b.3 - 90005800-900058ff : mmc0 -92000000-9207ffff : 0000:00:02.1 -92080000-92083fff : 0000:00:1b.0 - 92080000-92083fff : ICH HD audio -92084000-92084fff : Intel Flush Page +88000000-880fffff : PCI Bus 0000:03 + 88000000-88003fff : 0000:03:0b.1 + 88004000-88004fff : 0000:03:0b.0 + 88004000-88004fff : yenta_socket + 88005000-880057ff : 0000:03:0b.1 + 88005000-880057ff : firewire_ohci + 88005800-880058ff : 0000:03:0b.3 + 88005800-880058ff : mmc0 +88100000-8817ffff : 0000:00:02.1 +88180000-88183fff : 0000:00:1b.0 + 88180000-88183fff : ICH HD audio +88184000-88184fff : Intel Flush Page +88400000-887fffff : PCI CardBus 0000:04 +88800000-88bfffff : PCI CardBus 0000:04 All of the files above plus some more data are available from http://www.sisk.pl/kernel/debug/mainline/2.6.28-rc7/ HTH Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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