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    SubjectSMP+nosmp=hang [was: Re: 2.6.15-rc5-mm2]
    On Sun, 11 Dec 2005 04:13:08 -0800, Andrew Morton <akpm@osdl.org> wrote:

    >
    > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.15-rc5/2.6.15-rc5-mm2/
    >

    Booting a SMP built kernel with 'nosmp' just hangs at the VFS layer, with
    the message about 'not being able to find root device sda1'.
    sda is a SATA drive on an Intel ICH5 controller:

    libata version 1.20 loaded.
    ata_piix 0000:00:1f.2: version 1.05
    ACPI: PCI Interrupt 0000:00:1f.2[A] -> GSI 18 (level, low) -> IRQ 16
    PCI: Setting latency timer of device 0000:00:1f.2 to 64
    ata1: SATA max UDMA/133 cmd 0xC000 ctl 0xC402 bmdma 0xD000 irq 16
    ata2: SATA max UDMA/133 cmd 0xC800 ctl 0xCC02 bmdma 0xD008 irq 16
    ata1: dev 0 cfg 49:2f00 82:346b 83:7d01 84:4003 85:3469 86:3c01 87:4003 88:407f
    ata1: dev 0 ATA-6, max UDMA/133, 390721968 sectors: LBA48
    ata1: dev 0 configured for UDMA/133
    scsi0 : ata_piix
    ATA: abnormal status 0x7F on port 0xC807
    scsi1 : ata_piix
    Vendor: ATA Model: ST3200822AS Rev: 3.01
    Type: Direct-Access ANSI SCSI revision: 05
    SCSI device sda: 390721968 512-byte hdwr sectors (200050 MB)
    SCSI device sda: drive cache: write back
    SCSI device sda: 390721968 512-byte hdwr sectors (200050 MB)
    SCSI device sda: drive cache: write back
    sda: sda1 sda2 sda3
    sd 0:0:0:0: Attached scsi disk sda

    I would have to double check, but I think it even missed the USB keyboard.

    Something really strange...

    --
    J.A. Magallon <jamagallon()able!es> \ Software is like sex:
    werewolf!able!es \ It's better when it's free
    Mandriva Linux release 2006.1 (Cooker) for i586
    Linux 2.6.14-jam4 (gcc 4.0.2 (4.0.2-1mdk for Mandriva Linux release 2006.1))
    [unhandled content-type:application/pgp-signature]
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