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Date: Sun, 10 Oct 2010 20:50:32 -0700 From: Yinghai Lu <yinghai@...nel.org> To: Thomas Gleixner <tglx@...utronix.de> CC: Grant Likely <grant.likely@...retlab.ca>, Russell King - ARM Linux <linux@....linux.org.uk>, LKML <linux-kernel@...r.kernel.org>, linux-arch@...r.kernel.org, Linus Torvalds <torvalds@...l.org>, Andrew Morton <akpm@...ux-foundation.org>, x86@...nel.org, Peter Zijlstra <peterz@...radead.org>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Paul Mundt <lethal@...ux-sh.org>, David Woodhouse <dwmw2@...radead.org>, Jesse Barnes <jbarnes@...tuousgeek.org>, "Eric W. Biederman" <ebiederm@...ssion.com> Subject: Re: [patch 00/47] Sparse irq rework On 10/10/2010 02:32 AM, Thomas Gleixner wrote: > On Sat, 9 Oct 2010, Yinghai Lu wrote: >> On 10/08/2010 11:34 PM, Thomas Gleixner wrote: >>> On Fri, 8 Oct 2010, Yinghai Lu wrote: >>>> + /* only handle fall out from setup_IO_APIC_irqs() */ >>> >>> What's the fallout ? And why are we coming here in the first place >>> when the irq is < 16 ? >> >> setup_IO_APIC_irqs only handle apic_id == 0 or apic_id > 0 but irq < 16 via acpi override. >> >> it seems IBM's system have apic_id == 1, and sci irq is using 30. >> >> so at that time add that setup_IO_APIC_irq_extra() to workaround it. >> but it seems we set that two time when irq < 16. >> >>> >>>> + if (!((apic_id > 0) && (irq > 16))) >>>> + return; > > I added this into the queue, but simplified it to > > if (apic_id == 0 || irq < NR_IRQS_LEGACY) > > Folded in the other fix and pushed out an updated tree. still have the irq_2_iommu_alloc warning from pnpacpi [ 79.199117] calling pnpacpi_init+0x0/0x8c @ 1 [ 79.199478] pnp: PnP ACPI init [ 79.218953] ACPI: bus type pnp registered [ 79.219874] pnp 00:00: [bus 00-3f] [ 79.220182] pnp 00:00: [io 0x0000-0x5fff window] [ 79.239384] pnp 00:00: [mem 0x000a0000-0x000bffff window] [ 79.239898] pnp 00:00: [mem 0x000d0000-0x000dffff window] [ 79.258900] pnp 00:00: [mem 0x00000000-0xffffffff window] [ 79.259454] pnp 00:00: [mem 0x90000000-0xafffffff window] [ 79.278769] pnp 00:00: [mem 0xfed40000-0xfed44fff window] [ 79.279163] pnp 00:00: [mem 0xfc000000000-0xfc07fffffff window] [ 79.299403] pnp 00:00: Plug and Play ACPI device, IDs PNP0a08 PNP0a03 (active) [ 79.299988] pnp 00:01: [mem 0xfc000000-0xfcffffff] [ 79.318841] pnp 00:01: [mem 0xfd000000-0xfdffffff] [ 79.319243] pnp 00:01: [mem 0xfe000000-0xfebfffff] [ 79.339986] pnp 00:01: Plug and Play ACPI device, IDs PNP0c01 (active) [ 79.395515] pnp 00:02: [dma 4] [ 79.395849] pnp 00:02: [io 0x0000-0x000f] [ 79.396152] pnp 00:02: [io 0x0081-0x0083] [ 79.408405] pnp 00:02: [io 0x0087] [ 79.408739] pnp 00:02: [io 0x0089-0x008b] [ 79.409041] pnp 00:02: [io 0x008f] [ 79.428422] pnp 00:02: [io 0x00c0-0x00df] [ 79.429289] pnp 00:02: Plug and Play ACPI device, IDs PNP0200 (active) [ 79.429927] pnp 00:03: [io 0x0070-0x0071] [ 79.448615] IOAPIC[0]: Set routing entry (8-8 -> 0x38 -> IRQ 8 Mode:0 Active:0) [ 79.468286] ------------[ cut here ]------------ [ 79.468664] WARNING: at drivers/pci/intr_remapping.c:67 irq_2_iommu_alloc+0x52/0xde() [ 79.488347] Hardware name: Sun Fire X4800 [ 79.488714] irq_2_iommu!=NULL irq 8 [ 79.489046] Modules linked in: [ 79.508267] Pid: 1, comm: swapper Not tainted 2.6.36-rc7-tip-yh-01962-g3229a4e-dirty #9 [ 79.508815] Call Trace: [ 79.528192] [<ffffffff81079001>] warn_slowpath_common+0x85/0x9d [ 79.528670] [<ffffffff810790bc>] warn_slowpath_fmt+0x46/0x48 [ 79.548166] [<ffffffff8146879c>] irq_2_iommu_alloc+0x52/0xde [ 79.548762] [<ffffffff81cdfac3>] ? _raw_spin_lock_irqsave+0x6d/0x7b [ 79.568209] [<ffffffff81468956>] ? alloc_irte+0xa4/0x176 [ 79.568621] [<ffffffff814689d9>] alloc_irte+0x127/0x176 [ 79.588232] [<ffffffff81050d3b>] setup_ioapic_irq+0x13f/0x337 [ 79.588783] [<ffffffff810c4f9f>] ? irq_to_desc+0x17/0x19 [ 79.608202] [<ffffffff810c6df7>] ? irq_get_irq_data+0xe/0x10 [ 79.608682] [<ffffffff81051043>] io_apic_set_pci_routing+0x110/0x121 [ 79.628297] [<ffffffff8104c8c8>] mp_register_gsi+0x19b/0x1ac [ 79.628811] [<ffffffff8104c955>] acpi_register_gsi+0x4a/0x78 [ 79.648259] [<ffffffff810504d5>] ? acpi_get_override_irq+0x3e/0x13e [ 79.648770] [<ffffffff814bb7de>] pnpacpi_parse_allocated_irqresource+0xf0/0x127 [ 79.668439] [<ffffffff814bb86f>] pnpacpi_allocated_resource+0x5a/0x2cf [ 79.687979] [<ffffffff814a8bdb>] ? acpi_ut_remove_reference+0x6a/0x71 [ 79.688490] [<ffffffff814a457d>] ? acpi_rs_get_method_data+0x3b/0x45 [ 79.708209] [<ffffffff814bb815>] ? pnpacpi_allocated_resource+0x0/0x2cf [ 79.708805] [<ffffffff814a3cc1>] acpi_walk_resources+0x81/0xc9 [ 79.728209] [<ffffffff814bb648>] pnpacpi_parse_allocated_resource+0x5c/0x85 [ 79.748009] [<ffffffff828076c1>] pnpacpi_add_device_handler+0x192/0x215 [ 79.748593] [<ffffffff8149c1c3>] acpi_ns_get_device_callback+0x14a/0x16c [ 79.767968] [<ffffffff8149f27d>] acpi_ns_walk_namespace+0xbe/0x17d [ 79.768518] [<ffffffff8149c079>] ? acpi_ns_get_device_callback+0x0/0x16c [ 79.788261] [<ffffffff8149c062>] acpi_get_devices+0x66/0x7d [ 79.807674] [<ffffffff8280752f>] ? pnpacpi_add_device_handler+0x0/0x215 [ 79.808189] [<ffffffff8148001e>] ? register_acpi_bus_type+0x70/0x7e [ 79.837937] [<ffffffff82807412>] ? pnpacpi_init+0x0/0x8c [ 79.838448] [<ffffffff82807470>] pnpacpi_init+0x5e/0x8c [ 79.857771] [<ffffffff810001f2>] do_one_initcall+0x57/0x133 [ 79.858157] [<ffffffff827d38ef>] kernel_init+0x167/0x1f1 [ 79.878118] [<ffffffff81034994>] kernel_thread_helper+0x4/0x10 [ 79.878614] [<ffffffff81ce05bc>] ? restore_args+0x0/0x30 [ 79.897624] [<ffffffff827d3788>] ? kernel_init+0x0/0x1f1 [ 79.897994] [<ffffffff81034990>] ? kernel_thread_helper+0x0/0x10 [ 79.917614] ---[ end trace 5003353dd8ff0030 ]--- [ 79.917963] pnp 00:03: [irq 8] [ 79.918692] pnp 00:03: Plug and Play ACPI device, IDs PNP0b00 (active) [ 79.937833] pnp 00:04: [io 0x00f0-0x00ff] [ 79.938151] IOAPIC[0]: Set routing entry (8-13 -> 0x3d -> IRQ 13 Mode:0 Active:0) [ 79.957809] pnp 00:04: [irq 13] [ 79.958514] pnp 00:04: Plug and Play ACPI device, IDs PNP0c04 (active) [ 79.978078] pnp 00:05: [io 0x0010-0x001f] [ 79.978454] pnp 00:05: [io 0x0022-0x003f] [ 79.997386] pnp 00:05: [io 0x0044-0x005f] [ 79.997690] pnp 00:05: [io 0x0062-0x0063] [ 79.998074] pnp 00:05: [io 0x0065-0x006f] [ 80.017420] pnp 00:05: [io 0x0072-0x007f] [ 80.017750] pnp 00:05: [io 0x0080] [ 80.017988] pnp 00:05: [io 0x0084-0x0086] [ 80.037443] pnp 00:05: [io 0x0088] [ 80.037791] pnp 00:05: [io 0x008c-0x008e] [ 80.057114] pnp 00:05: [io 0x0090-0x009f] [ 80.057498] pnp 00:05: [io 0x00a2-0x00bf] [ 80.057792] pnp 00:05: [io 0x00e0-0x00ef] [ 80.077168] pnp 00:05: [io 0x04d0-0x04d1] [ 80.077454] pnp 00:05: [io 0x0800-0x087f] [ 80.077801] pnp 00:05: [io 0x0000-0xffffffffffffffff disabled] [ 80.097401] pnp 00:05: [io 0x0500-0x057f] [ 80.097733] pnp 00:05: [mem 0xfed1c000-0xfed1ffff] [ 80.117202] pnp 00:05: [mem 0xfed20000-0xfed3ffff] [ 80.117627] pnp 00:05: [mem 0xfed40000-0xfed8ffff] [ 80.138465] pnp 00:05: Plug and Play ACPI device, IDs PNP0c02 (active) [ 80.139192] pnp 00:06: [mem 0xfed00000-0xfed003ff] [ 80.157924] pnp 00:06: Plug and Play ACPI device, IDs PNP0103 (active) [ 80.158793] pnp 00:07: [io 0x0060] [ 80.177052] pnp 00:07: [io 0x0064] [ 80.177288] pnp 00:07: [mem 0xfec00000-0xfec00fff] [ 80.177676] pnp 00:07: [mem 0xfee00000-0xfee00fff] [ 80.198356] pnp 00:07: Plug and Play ACPI device, IDs PNP0c02 (active) [ 80.198877] pnp 00:08: [io 0x03f8-0x03ff] [ 80.216890] IOAPIC[0]: Set routing entry (8-4 -> 0x34 -> IRQ 4 Mode:0 Active:0) [ 80.217523] pnp 00:08: [irq 4] [ 80.236833] pnp 00:08: [dma 0 disabled] [ 80.237611] pnp 00:08: Plug and Play ACPI device, IDs PNP0501 (active) [ 80.256743] pnp 00:09: [io 0x0ca2] [ 80.257080] pnp 00:09: [io 0x0ca6] [ 80.257821] pnp 00:09: Plug and Play ACPI device, IDs IPI0001 (active) [ 80.277222] pnp 00:0a: [mem 0x80000000-0x8fffffff] [ 80.279023] pnp 00:0a: Plug and Play ACPI device, IDs PNP0c02 (active) [ 80.297523] pnp 00:0b: [mem 0x00000000-0x0009ffff] [ 80.297893] pnp 00:0b: [mem 0x000c0000-0x000cffff] [ 80.316657] pnp 00:0b: [mem 0x000e0000-0x000fffff] [ 80.317020] pnp 00:0b: [mem 0x00100000-0xffffffff] [ 80.336561] pnp 00:0b: [mem 0xfed90000-0xffffffff] [ 80.337082] pnp 00:0b: disabling [mem 0x00000000-0x0009ffff] because it overlaps 0000:c4:00.0 BAR 0 [mem 0x00000000-0x000fffff 64bit] [ 80.356938] pnp 00:0b: disabling [mem 0x000c0000-0x000cffff] because it overlaps 0000:c4:00.0 BAR 0 [mem 0x00000000-0x000fffff 64bit] [ 80.377019] pnp 00:0b: disabling [mem 0x000e0000-0x000fffff] because it overlaps 0000:c4:00.0 BAR 0 [mem 0x00000000-0x000fffff 64bit] [ 80.397045] pnp 00:0b: disabling [mem 0x00000000-0x0009ffff disabled] because it overlaps 0000:c4:00.0 BAR 2 [mem 0x00000000-0x007fffff 64bit pref] [ 80.417131] pnp 00:0b: disabling [mem 0x000c0000-0x000cffff disabled] because it overlaps 0000:c4:00.0 BAR 2 [mem 0x00000000-0x007fffff 64bit pref] [ 80.456390] pnp 00:0b: disabling [mem 0x000e0000-0x000fffff disabled] because it overlaps 0000:c4:00.0 BAR 2 [mem 0x00000000-0x007fffff 64bit pref] [ 80.476537] pnp 00:0b: disabling [mem 0x00100000-0xffffffff] because it overlaps 0000:c4:00.0 BAR 2 [mem 0x00000000-0x007fffff 64bit pref] [ 80.496584] pnp 00:0b: disabling [mem 0x00000000-0x0009ffff disabled] because it overlaps 0000:c4:00.0 BAR 4 [mem 0x00000000-0x0fffffff 64bit pref] [ 80.516724] pnp 00:0b: disabling [mem 0x000c0000-0x000cffff disabled] because it overlaps 0000:c4:00.0 BAR 4 [mem 0x00000000-0x0fffffff 64bit pref] [ 80.536892] pnp 00:0b: disabling [mem 0x000e0000-0x000fffff disabled] because it overlaps 0000:c4:00.0 BAR 4 [mem 0x00000000-0x0fffffff 64bit pref] [ 80.576556] pnp 00:0b: disabling [mem 0x00100000-0xffffffff disabled] because it overlaps 0000:c4:00.0 BAR 4 [mem 0x00000000-0x0fffffff 64bit pref] [ 80.597519] pnp 00:0b: Plug and Play ACPI device, IDs PNP0c01 (active) [ 80.598653] pnp 00:0c: [bus 40-7f] [ 80.616111] pnp 00:0c: [io 0x0000 window] [ 80.616464] pnp 00:0c: [io 0x0000 window] [ 80.616826] pnp 00:0c: [io 0x6000-0x9fff window] [ 80.636240] pnp 00:0c: [mem 0x00000000 window] [ 80.636525] pnp 00:0c: [mem 0x00000000 window] [ 80.655911] pnp 00:0c: [mem 0xb0000000-0xcfffffff window] [ 80.656462] pnp 00:0c: [mem 0x00000000-0xffffffff window] [ 80.675917] pnp 00:0c: [mem 0xfc080000000-0xfc0ffffffff window] [ 80.676936] pnp 00:0c: Plug and Play ACPI device, IDs PNP0a08 PNP0a03 (active) [ 80.697473] pnp 00:0d: Plug and Play ACPI device, IDs PNP0c01 (active) [ 80.698718] pnp 00:0e: [bus 80-bf] [ 80.715901] pnp 00:0e: [io 0x0000 window] [ 80.716215] pnp 00:0e: [io 0x0000 window] [ 80.716604] pnp 00:0e: [io 0xa000-0xdfff window] [ 80.735981] pnp 00:0e: [mem 0x00000000 window] [ 80.736349] pnp 00:0e: [mem 0x00000000 window] [ 80.755714] pnp 00:0e: [mem 0xd0000000-0xefffffff window] [ 80.756197] pnp 00:0e: [mem 0x00000000-0xffffffff window] [ 80.775696] pnp 00:0e: [mem 0xfc100000000-0xfc17fffffff window] [ 80.776768] pnp 00:0e: Plug and Play ACPI device, IDs PNP0a08 PNP0a03 (active) [ 80.797339] pnp 00:0f: Plug and Play ACPI device, IDs PNP0c01 (active) [ 80.798666] pnp 00:10: [bus c0-f7] [ 80.815710] pnp 00:10: [io 0x0000 window] [ 80.816075] pnp 00:10: [io 0x0000 window] [ 80.816527] pnp 00:10: [io 0xe000-0xffff window] [ 80.835833] pnp 00:10: [mem 0x00000000 window] [ 80.836145] pnp 00:10: [mem 0x00000000 window] [ 80.855581] pnp 00:10: [mem 0xf0000000-0xfbffffff window] [ 80.856100] pnp 00:10: [mem 0x00000000-0xffffffff window] [ 80.875531] pnp 00:10: [mem 0xfc180000000-0xfc1ffffffff window] [ 80.876551] pnp 00:10: Plug and Play ACPI device, IDs PNP0a08 PNP0a03 (active) [ 80.897293] pnp 00:11: Plug and Play ACPI device, IDs PNP0c01 (active) [ 80.898293] pnp: PnP ACPI: found 18 devices [ 80.915724] ACPI: ACPI bus type pnp unregistered [ 80.916140] initcall pnpacpi_init+0x0/0x8c returned 0 after 1680029 usecs -- 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 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