lkml.org 
[lkml]   [2009]   [May]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    SubjectRe: [PATCH] x86: fix node_possible_map logic
    From
    On Fri, May 8, 2009 at 1:52 PM, Jack Steiner <steiner@sgi.com> wrote:
    > On Fri, May 08, 2009 at 12:43:01AM -0700, Yinghai Lu wrote:
    >>
    >> recently there are some changes to about meaning of node_possible_map
    >>
    >> and it is some strange:
    >> the node without memory would be set in node_possible_map
    >> but some node with less NODE_MIN_SIZE will be kicked out of node_possible_map.
    >>
    > ...
    >
    > I tried this patch on a system with
    >        - latest linux-next
    >        - 2 Nehelem sockets
    >        - no memory on socket 0
    >        - 256MB on socket 1
    >
    > I still see a panic in early boot. Here is the console output:
    > (Note - this is from a system simulator - not real hardware. However, I don't
    > believe the problem is related to the simulator (but would never rule it out).
    >
    > The panic is at least partially the result of a NULL entry in the
    > node_data[] array.
    >
    > I'll try to do more debugging later this weekend....
    >
    > --- jack
    >
    > --------------------
    >
    >
    > <6>Initializing cgroup subsys cpuset
    > <6>Initializing cgroup subsys cpu
    > <5>Linux version 2.6.30-rc4-next-20090505-medusa (steiner@alcatraz.americas.sgi.com) (gcc version 4.2.4) #43 SMP Fri May 8 07:26:02 CDT 2009
    > <6>Command line: root=/dev/hda2 init=/bin/bash console=ttyS0,38400n8 fprom lpj=10000 nohpet loglevel=8 iommu=off dma32_size=4096
    > <6>KERNEL supported cpus:
    > <6>  Intel GenuineIntel
    > <6>  AMD AuthenticAMD
    > <6>  Centaur CentaurHauls
    > <6>BIOS-provided physical RAM map:
    > <6> BIOS-e820: 0000000000000000 - 0000000000006000 (usable)
    > <6> BIOS-e820: 0000000000006000 - 0000000000200000 (reserved)
    > <6> BIOS-e820: 0000000000200000 - 0000000010000000 (usable)
    > <6> BIOS-e820: 0000000080000000 - 0000000090000000 (reserved)
    > <6> BIOS-e820: 00000000f0000000 - 00000000fc000000 (reserved)
    > <6> BIOS-e820: 00000000fed1c000 - 00000000fed20000 (reserved)
    > <6> BIOS-e820: 00000000fff60000 - 00000000fff6c000 (reserved)
    > <6> BIOS-e820: 00000fe000000000 - 00000fe018000000 (reserved)
    > <6>EFI v1.00 by SGI
    > <6> ACPI 2.0=0xe0200  UVsystab=0xe08c0
    > <6>EFI: mem00: type=7, attr=0x8, range=[0x0000000000000000-0x0000000000006000) (0MB)
    > <6>EFI: mem01: type=5, attr=0x8000000000001000, range=[0x0000000000006000-0x00000000000b0000) (0MB)
    > <6>EFI: mem02: type=6, attr=0x8000000000000008, range=[0x00000000000b0000-0x0000000000200000) (1MB)
    > <6>EFI: mem03: type=7, attr=0x8, range=[0x0000000000200000-0x0000000010000000) (254MB)
    > <6>EFI: mem04: type=6, attr=0x8000000000000001, range=[0x0000000080000000-0x0000000090000000) (256MB)
    > <6>EFI: mem05: type=6, attr=0x8000000000000001, range=[0x00000000f0000000-0x00000000fc000000) (192MB)
    > <6>EFI: mem06: type=6, attr=0x8000000000000001, range=[0x00000000fed1c000-0x00000000fed20000) (0MB)
    > <6>EFI: mem07: type=6, attr=0x8000000000000001, range=[0x00000000fff60000-0x00000000fff6c000) (0MB)
    > <6>EFI: mem08: type=11, attr=0x8000000000000001, range=[0x00000fe000000000-0x00000fe018000000) (384MB)
    > <6>DMI not present or invalid.
    > <6>last_pfn = 0x10000 max_arch_pfn = 0x100000000
    > <7>MTRR default type: write-back
    > <7>MTRR fixed ranges enabled:
    > <7>  00000-FFFFF write-back
    > <7>MTRR variable ranges enabled:
    > <7>  0 base 0   F0000000 mask FFF F0000000 uncachable
    > <7>  1 base E0  00000000 mask FF0 00000000 uncachable
    > <7>  2 base F0  00000000 mask FF0 00000000 uncachable
    > <7>  3 base F00 00000000 mask FF0000000000 uncachable
    > <7>  4 disabled
    > <7>  5 disabled
    > <7>  6 disabled
    > <7>  7 disabled
    > <6>x86 PAT enabled: cpu 0, old 0x606060606060606, new 0x7010600070106
    > <6>x2apic enabled by BIOS, switching to x2apic ops
    > <6>init_memory_mapping: 0000000000000000-0000000010000000
    > <7> 0000000000 - 0010000000 page 2M
    > <7>kernel direct mapping tables up to 10000000 @ 936000-938000
    > <4>ACPI: RSDP 00000000000e0200 00024 (v02       )
    > <4>ACPI: XSDT 00000000000e0240 00054 (v01    SGI      UVX 00010001 FPRM 00000001)
    > <4>ACPI: APIC 00000000000e02e0 00086 (v01    SGI      UVX 00010001 FPRM 00000001)
    > <4>ACPI: SRAT 00000000000e0380 00078 (v01    SGI      UVX 00010001 FPRM 00000001)
    > <4>ACPI: SLIT 00000000000e05e0 00030 (v01    SGI      UVX 00010001 FPRM 00000001)
    > <4>ACPI: MCFG 00000000000e0640 0004C (v01    SGI      UVX 00010001 FPRM 00000001)
    > <4>ACPI: FACP 00000000000e06a0 000F4 (v03    SGI      UVX 00030001 FPRM 00000001)
    > <4>ACPI: DSDT 00000000000e02a0 00030 (v01    SGI      UVX 00010001 FPRM 00000001)
    > <4>ACPI: FACS 00000000000e07a0 00040
    > <4>ACPI: DMAR 00000000000e0860 0004C (v01    SGI      UVX 00010001 FPRM 00000001)
    > <7>ACPI: Local APIC address 0xfee00000
    > <6>Setting APIC routing to cluster x2apic.
    > <6>SRAT: PXM 0 -> APIC 0 -> Node 0
    > <6>SRAT: PXM 1 -> APIC 128 -> Node 1
    > <6>SRAT: Node 1 PXM 1 0-fff6c000
    > <7>NUMA: Using 63 for the hash shift.
    > <6>Bootmem setup node 1 0000000000000000-0000000010000000
    > <6>  NODE_DATA [0000000000935a80 - 0000000000969a7f]
    > <6>  bootmap [000000000096a000 -  000000000096bfff] pages 2
    > <6>(7 early reservations) ==> bootmem [0000000000 - 0010000000]
    > <6>  #0 [0000000000 - 0000001000]   BIOS data page ==> [0000000000 - 0000001000]
    > <6>  #1 [0000006000 - 0000008000]       TRAMPOLINE ==> [0000006000 - 0000008000]
    > <6>  #2 [0000200000 - 0000935a5c]    TEXT DATA BSS ==> [0000200000 - 0000935a5c]
    > <6>  #3 [000009f000 - 00000e0900]    BIOS reserved ==> [000009f000 - 00000e0900]
    > <6>  #4 [00000e0a68 - 0000100000]    BIOS reserved ==> [00000e0a68 - 0000100000]
    > <6>  #5 [00000e0900 - 00000e0a68]       EFI memmap ==> [00000e0900 - 00000e0a68]
    > <6>  #6 [0000001000 - 0000001030]        ACPI SLIT ==> [0000001000 - 0000001030]
    > <7> [ffffe20000000000-ffffe200003fffff] PMD -> [ffff880001200000-ffff8800015fffff] on node 1
    > <4>Zone PFN ranges:
    > <4>  DMA      0x00000000 -> 0x00001000
    > <4>  DMA32    0x00001000 -> 0x00100000
    > <4>  Normal   0x00100000 -> 0x00100000
    > <4>Movable zone start PFN for each node
    > <4>early_node_map[2] active PFN ranges
    > <4>    1: 0x00000000 -> 0x00000006
    > <4>    1: 0x00000200 -> 0x00010000
    > <7>On node 1 totalpages: 65030
    > <7>  DMA zone: 56 pages used for memmap
    > <7>  DMA zone: 1944 pages reserved
    > <7>  DMA zone: 1590 pages, LIFO batch:0
    > <7>  DMA32 zone: 840 pages used for memmap
    > <7>  DMA32 zone: 60600 pages, LIFO batch:15
    > <6>ACPI: PM-Timer IO Port: 0x1008
    > <7>ACPI: Local APIC address 0xfee00000
    > <6>Setting APIC routing to cluster x2apic.
    > <6>ACPI: LSAPIC (acpi_id[0x00] lsapic_id[0x00] lsapic_eid[0x00] enabled)
    > <6>ACPI: LSAPIC (acpi_id[0x01] lsapic_id[0x00] lsapic_eid[0x80] enabled)
    > <6>ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
    > <6>ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
    > <6>ACPI: IOAPIC (id[0x08] address[0xfec00000] gsi_base[0])
    > <6>IOAPIC[0]: apic_id 8, version 0, address 0xfec00000, GSI 0-23
    > <6>ACPI: IOAPIC (id[0x09] address[0xfec80000] gsi_base[24])
    > <6>IOAPIC[1]: apic_id 9, version 0, address 0xfec80000, GSI 24-24
    > <6>ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 high edge)
    > <6>ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
    > <7>ACPI: IRQ0 used by override.
    > <7>ACPI: IRQ2 used by override.
    > <7>ACPI: IRQ9 used by override.
    > <6>Using ACPI (MADT) for SMP configuration information
    > <6>SMP: Allowing 2 CPUs, 0 hotplug CPUs
    > <7>nr_irqs_gsi: 25
    > <6>PM: Registered nosave memory: 0000000000006000 - 0000000000200000
    > <6>Allocating PCI resources starting at 18000000 (gap: 10000000:70000000)
    > <6>NR_CPUS:4096 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2
    > <6>PERCPU: Embedded 26 pages at ffff880001005000, static data 76384 bytes
    > <4>Pid: 0, comm: swapper Not tainted 2.6.30-rc4-next-20090505-medusa #43
    > <4>Call Trace:
    > <4> [<ffffffff806b919e>] early_idt_handler+0x5e/0x71
    > <4> [<ffffffff802920e1>] ? build_zonelists_node+0x2f/0x70
    > <4> [<ffffffff80232241>] ? __node_distance+0x59/0x70
    > <4> [<ffffffff80293322>] __build_all_zonelists+0x1ae/0x55a
    > <4> [<ffffffff80293915>] build_all_zonelists+0x1b5/0x263
    > <4> [<ffffffff806b9b6e>] start_kernel+0x17a/0x3c5
    > <4> [<ffffffff806b9140>] ? early_idt_handler+0x0/0x71
    > <4> [<ffffffff806b92a7>] x86_64_start_reservations+0xae/0xb2
    > <4> [<ffffffff806b93fd>] x86_64_start_kernel+0x152/0x161
    > <4>RIP build_zonelists_node+0x2f/0x70
    >
    > mdb>  <2045599936>  <early_idt_handler+0x6f>eb fd                   jmp    0xffffffff806b91ae <early_idt_handler+0x6e>
    >
    > mdb> m d node_data
    > Node 0/nasid 0 cpu 0/logical 0:
    >        <0xffffffff806a7c80> 0x0000000000000000
    >        <0xffffffff806a7c88> 0xffff880000935a80
    >        <0xffffffff806a7c90> 0x0000000000000000

    static int __build_all_zonelists(void *dummy)
    {
    int nid;

    for_each_online_node(nid) {
    pg_data_t *pgdat = NODE_DATA(nid);

    build_zonelists(pgdat);
    build_zonelist_cache(pgdat);
    }
    return 0;
    }

    looks node 0 get back online set even there is no memory on it.

    YH
    --
    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/

    \
     
     \ /
      Last update: 2009-05-08 23:21    [W:0.051 / U:0.544 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site