Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750869AbVKQOcE (ORCPT ); Thu, 17 Nov 2005 09:32:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750903AbVKQOcE (ORCPT ); Thu, 17 Nov 2005 09:32:04 -0500 Received: from fmr24.intel.com ([143.183.121.16]:32397 "EHLO scsfmr004.sc.intel.com") by vger.kernel.org with ESMTP id S1750869AbVKQOcC convert rfc822-to-8bit (ORCPT ); Thu, 17 Nov 2005 09:32:02 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Subject: RE: maxcpus=1 broken, ACPI bug? Date: Thu, 17 Nov 2005 06:31:44 -0800 Message-ID: <88056F38E9E48644A0F562A38C64FB60065B5157@scsmsx403.amr.corp.intel.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: maxcpus=1 broken, ACPI bug? Thread-Index: AcXrQNsWXhHdo6wbTn2INQ4EdvFrzgAQl8+w From: "Pallipadi, Venkatesh" To: , "LKML" Cc: "Brown, Len" , "Andrew Morton" , "Linus Torvalds" X-OriginalArrivalTime: 17 Nov 2005 14:31:46.0633 (UTC) FILETIME=[A3814B90:01C5EB83] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 13025 Lines: 307 Hi, I am not yet able to see how this patch can cause a hang like that. My initial guess is that it has got something to with idle routine and preempt. I will look more into this and try to reproduce it locally. Can you please try out disable preemption in your config and try 2.6.15-rc1 and let me know how it goes. Thanks, Venki >-----Original Message----- >From: Maneesh Soni [mailto:maneesh@in.ibm.com] >Sent: Wednesday, November 16, 2005 10:31 PM >To: LKML >Cc: Pallipadi, Venkatesh; Brown, Len; Andrew Morton; Linus Torvalds >Subject: maxcpus=1 broken, ACPI bug? > >Hi, > >Using maxcpus=1 boot option, hangs the system while booting. It was >working till 2.6.13-rc2. After git bisect I found that after backing >out this ACPI patch it works again, though I had to manually sort the >reject while backing out. > >http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2. 6.git;a=commitdiff;h=acf05f4b7f558051ea0028e8e617144123650272 > >This option is useful in case of kexec/kdump if only one cpu is >desired to be up during second kernel boot. I tried this on a 4-way >Xeon 2.5 MHz SMP system. > >Following is the boot log with 2.6.15-rc1 with maxcpus=1 >option. .config >is also attached. > >Thanks >Maneesh > >-------------------------------------------------------------------- > Booting 'test kernel' > >root (hd0,0) > Filesystem type is ext2fs, partition type 0x83 >kernel /t ro root=/dev/sda2 rhgb console=tty0 >console=ttyS0,38400 maxcpus=1 > [Linux-bzImage, setup=0x1400, size=0x218992] >module /initrd-2.6.9-5.ELsmp.img > [Linux-initrd @ 0x37f6f000, 0x80f5d bytes] > >Linux version 2.6.15-rc1 (root@llm11.in.ibm.com) (gcc version >3.4.3 20041212 (Red Hat 3.4.3-9.EL4)) #1 SMP PREEMPT Thu Nov >17 11:51:29 IST 2005 >BIOS-provided physical RAM map: > BIOS-e820: 0000000000000000 - 000000000009dc00 (usable) > BIOS-e820: 000000000009dc00 - 00000000000a0000 (reserved) > BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved) > BIOS-e820: 0000000000100000 - 00000000e97f5f40 (usable) > BIOS-e820: 00000000e97f5f40 - 00000000e97ff800 (ACPI data) > BIOS-e820: 00000000e97ff800 - 00000000e9800000 (reserved) > BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved) > BIOS-e820: 0000000100000000 - 0000000140000000 (usable) >4224MB HIGHMEM available. >896MB LOWMEM available. >found SMP MP-table at 0009dd40 >DMI 2.3 present. >ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) >Processor #0 15:2 APIC version 20 >ACPI: LAPIC (acpi_id[0x01] lapic_id[0x02] enabled) >Processor #2 15:2 APIC version 20 >WARNING: maxcpus limit of 1 reached. Processor ignored. >ACPI: LAPIC (acpi_id[0x02] lapic_id[0x04] enabled) >Processor #4 15:2 APIC version 20 >WARNING: maxcpus limit of 1 reached. Processor ignored. >ACPI: LAPIC (acpi_id[0x03] lapic_id[0x06] enabled) >Processor #6 15:2 APIC version 20 >WARNING: maxcpus limit of 1 reached. Processor ignored. >ACPI: LAPIC_NMI (acpi_id[0x00] dfl dfl lint[0x1]) >ACPI: LAPIC_NMI (acpi_id[0x02] dfl dfl lint[0x1]) >ACPI: LAPIC_NMI (acpi_id[0x04] dfl dfl lint[0x1]) >ACPI: LAPIC_NMI (acpi_id[0x06] dfl dfl lint[0x1]) >ACPI: IOAPIC (id[0x0e] address[0xfec00000] gsi_base[0]) >IOAPIC[0]: apic_id 14, version 17, address 0xfec00000, GSI 0-15 >ACPI: IOAPIC (id[0x0d] address[0xfec01000] gsi_base[16]) >IOAPIC[1]: apic_id 13, version 17, address 0xfec01000, GSI 16-31 >ACPI: IOAPIC (id[0x0c] address[0xfec02000] gsi_base[32]) >IOAPIC[2]: apic_id 12, version 17, address 0xfec02000, GSI 32-47 >ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) >Enabling APIC mode: Flat. Using 3 I/O APICs >Using ACPI (MADT) for SMP configuration information >Allocating PCI resources starting at ea000000 (gap: e9800000:15400000) >Built 1 zonelists >Kernel command line: ro root=/dev/sda2 rhgb console=tty0 >console=ttyS0,38400 maxcpus=1 >Initializing CPU#0 >PID hash table entries: 4096 (order: 12, 65536 bytes) >Detected 2488.816 MHz processor. >Using tsc for high-res timesource >Console: colour VGA+ 80x25 >Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) >Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) >Memory: 4819576k/5242880k available (3171k kernel code, 52464k >reserved, 1007k data, 244k init, 3956692k highmem) >Checking if this processor honours the WP bit even in >supervisor mode... Ok. >Calibrating delay using timer specific routine.. 4985.70 >BogoMIPS (lpj=9971404) >Mount-cache hash table entries: 512 >CPU: Trace cache: 12K uops, L1 D cache: 8K >CPU: L2 cache: 512K >CPU: L3 cache: 1024K >CPU: Hyper-Threading is disabled >Intel machine check architecture supported. >Intel machine check reporting enabled on CPU#0. >CPU0: Intel P4/Xeon Extended MCE MSRs (12) available >CPU0: Thermal monitoring enabled >mtrr: v2.0 (20020519) >Enabling fast FPU save and restore... done. >Enabling unmasked SIMD FPU exception support... done. >Checking 'hlt' instruction... OK. > tbxface-0109 [02] load_tables : ACPI Tables >successfully acquired >Parsing all Control >Methods:....................................................... >............................................................... >............................................................... >............................................................... >............................................................... >............................................................... >........................................................ >Table [DSDT](id 0005) - 986 Objects with 113 Devices 426 >Methods 13 Regions >ACPI Namespace successfully loaded at root c0576818 >evxfevnt-0091 [03] enable : Transition to ACPI >mode successful >CPU0: Intel(R) Xeon(TM) MP CPU 2.50GHz stepping 05 >Total of 1 processors activated (4985.70 BogoMIPS). >ENABLING IO-APIC IRQs >..TIMER: vector=0x31 apic1=0 pin1=2 apic2=-1 pin2=-1 >Brought up 1 CPUs >checking if image is initramfs... it is >Freeing initrd memory: 515k freed >NET: Registered protocol family 16 >ACPI: bus type pci registered >PCI: PCI BIOS revision 2.10 entry at 0xfd74c, last bus=12 >PCI: Using configuration type 1 >usbcore: registered new driver usbfs >usbcore: registered new driver hub >ACPI: Subsystem revision 20050902 >evgpeblk-0988 [06] ev_create_gpe_block : GPE 00 to 1F [_GPE] >4 regs on int 0x7evgpeblk-0996 [06] ev_create_gpe_block : >Found 1 Wake, Enabled 0 Runtime GPEs >in this block >evgpeblk-0988 [06] ev_create_gpe_block : GPE 20 to 3F [_GPE] >4 regs on int 0x7evgpeblk-0996 [06] ev_create_gpe_block : >Found 0 Wake, Enabled 1 Runtime GPEs >in this block >Completing Region/Field/Buffer/Package >initialization:...................................... >Initialized 13/13 Regions 0/0 Fields 8/8 Buffers 17/18 >Packages (995 nodes) >Executing all Device _STA and_INI >methods:....................................................... >................................................................ >119 Devices found containing: 119 _STA, 1 _INI methods >ACPI: Interpreter enabled >ACPI: Using IOAPIC for interrupt routing >ACPI: PCI Root Bridge [PCI0] (0000:00) >PCI: Probing PCI hardware (bus 00) >PCI: Ignoring BAR0-3 of IDE controller 0000:00:0f.1 >ACPI: PCI Root Bridge [PCI1] (0000:01) >PCI: Probing PCI hardware (bus 01) >ACPI: PCI Root Bridge [PCI2] (0000:05) >PCI: Probing PCI hardware (bus 05) >ACPI: PCI Root Bridge [PCI3] (0000:08) >PCI: Probing PCI hardware (bus 08) >ACPI: PCI Root Bridge [PCI4] (0000:09) >PCI: Probing PCI hardware (bus 09) >ACPI: PCI Interrupt Link [LP00] (IRQs *10) >pci_link-0119 [09] pci_link_check_possibl: Blank IRQ resource >ACPI: PCI Interrupt Link [LP01] (IRQs) *0, disabled. >pci_link-0119 [09] pci_link_check_possibl: Blank IRQ resource >ACPI: PCI Interrupt Link [LP02] (IRQs) *0, disabled. >pci_link-0119 [09] pci_link_check_possibl: Blank IRQ resource >ACPI: PCI Interrupt Link [LP03] (IRQs) *0, disabled. >ACPI: PCI Interrupt Link [LP04] (IRQs *5) >ACPI: PCI Interrupt Link [LP05] (IRQs *5) >ACPI: PCI Interrupt Link [LP06] (IRQs *5) >ACPI: PCI Interrupt Link [LP07] (IRQs *5) >ACPI: PCI Interrupt Link [LP08] (IRQs *5) >ACPI: PCI Interrupt Link [LP09] (IRQs *5) >ACPI: PCI Interrupt Link [LP0A] (IRQs *5) >ACPI: PCI Interrupt Link [LP0B] (IRQs *5) >ACPI: PCI Interrupt Link [LP0C] (IRQs *5) >ACPI: PCI Interrupt Link [LP0D] (IRQs *5) >ACPI: PCI Interrupt Link [LP0E] (IRQs *5) >ACPI: PCI Interrupt Link [LP0F] (IRQs *5) >ACPI: PCI Interrupt Link [LP10] (IRQs *5) >ACPI: PCI Interrupt Link [LP11] (IRQs *5) >ACPI: PCI Interrupt Link [LP12] (IRQs *5) >ACPI: PCI Interrupt Link [LP13] (IRQs *5) >ACPI: PCI Interrupt Link [LP14] (IRQs *5) >ACPI: PCI Interrupt Link [LP15] (IRQs *5) >ACPI: PCI Interrupt Link [LP16] (IRQs *5) >ACPI: PCI Interrupt Link [LP17] (IRQs *5) >ACPI: PCI Interrupt Link [LP18] (IRQs *5) >ACPI: PCI Interrupt Link [LP19] (IRQs *5) >ACPI: PCI Interrupt Link [LP1A] (IRQs *5) >ACPI: PCI Interrupt Link [LP1B] (IRQs *5) >ACPI: PCI Interrupt Link [LP1C] (IRQs *9) >ACPI: PCI Interrupt Link [LP1D] (IRQs *9) >pci_link-0119 [09] pci_link_check_possibl: Blank IRQ resource >ACPI: PCI Interrupt Link [LP1E] (IRQs) *0, disabled. >ACPI: PCI Interrupt Link [LP1F] (IRQs *3) >ACPI: PCI Interrupt Link [LPUS] (IRQs *11) >Linux Plug and Play Support v0.97 (c) Adam Belay >pnp: PnP ACPI init >pnp: PnP ACPI: found 13 devices >SCSI subsystem initialized >PCI: Using ACPI for IRQ routing >PCI: If a device doesn't work, try "pci=routeirq". If it >helps, post a report >pnp: 00:00: ioport range 0x900-0x93f has been reserved >pnp: 00:00: ioport range 0x510-0x517 could not be reserved >pnp: 00:00: ioport range 0x504-0x507 could not be reserved >pnp: 00:00: ioport range 0x500-0x503 could not be reserved >pnp: 00:00: ioport range 0x520-0x53f has been reserved >pnp: 00:00: ioport range 0x420-0x427 has been reserved >pnp: 00:00: ioport range 0x460-0x461 has been reserved >pnp: 00:0a: ioport range 0x1ec-0x1ef has been reserved >pnp: 00:0a: ioport range 0x400-0x4fe could not be reserved >pnp: 00:0a: ioport range 0x600-0x600 has been reserved >pnp: 00:0a: ioport range 0x800-0x80f has been reserved >pnp: 00:0a: ioport range 0xc00-0xcfe could not be reserved >pnp: 00:0a: ioport range 0xf50-0xf58 has been reserved >Machine check exception polling timer started. >audit: initializing netlink socket (disabled) >audit(1132228762.256:1): initialized >highmem bounce pool size: 64 pages >Installing knfsd (copyright (C) 1996 okir@monad.swb.de). >io scheduler noop registered >io scheduler anticipatory registered >io scheduler deadline registered >io scheduler cfq registered >usbmon: debugfs is not available >USB Universal Host Controller Interface driver v2.3 >usbcore: registered new driver usblp >drivers/usb/class/usblp.c: v0.13: USB Printer Device Class driver >Initializing USB Mass Storage driver... >usbcore: registered new driver usb-storage >USB Mass Storage support registered. >usbcore: registered new driver usbhid >drivers/usb/input/hid-core.c: v2.6:USB HID core driver >usbcore: registered new driver touchkitusb >usbcore: registered new driver cytherm >drivers/usb/misc/cytherm.c: v1.0:Cypress USB Thermometer driver >usbcore: registered new driver phidgetservo >ACPI: Power Button (FF) [PWRF] >ACPI: CPU0 (power states: C1[C1]) >acpi_processor-0507 [06] processor_get_info : Error getting >cpuindex for acpiid 0x2 >acpi_processor-0507 [06] processor_get_info : Error getting >cpuindex for acpiid 0x1 >ACPI: CPU0 (power states: C1[C1]) >lp: driver loaded but no devices found >Linux agpgart interface v0.101 (c) Dave Jones >[drm] Initialized drm 1.0.0 20040925 >PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x64,0x60 irq 1,12 >PNP: PS/2 controller has invalid data port 0x64; using default 0x60 >PNP: PS/2 controller has invalid command port 0x60; using default 0x64 >serio: i8042 AUX port at 0x60,0x64 irq 12 >serio: i8042 KBD port at 0x60,0x64 irq 1 >Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ >sharing disabled >serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A >00:04: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A >RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize >tg3.c:v3.43 (Oct 24, 2005) >acpi_bus-0200 [01] bus_set_power : Device is not power >manageable >ACPI: PCI Interrupt 0000:09:08.0[A] -> GSI 47 (level, low) -> IRQ 16 >eth0: Tigon3 [partno(BCM95703) rev 1002 PHY(5703)] >(PCIX:100MHz:64-bit) 10/100/1000BaseT Ethernet 00:02:55:df:b4:13 >eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] Split[0] >WireSpeed[1] TSOcap[1] >eth0: dma_rwctrl[769f4000] >Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 >ide: Assuming 33MHz system bus speed for PIO modes; override >with idebus=xx > ><<<< hangs here >>>> > > >-- >Maneesh Soni >Linux Technology Center, >IBM India Software Labs, >Bangalore, India >email: maneesh@in.ibm.com >Phone: 91-80-25044990 > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/