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    SubjectRe: early exception error
    Yinghai Lu wrote:
    > david@lang.hm wrote:
    >> On Mon, 5 Jan 2009, Yinghai Lu wrote:
    >>
    >>> Can you send out boot log with working kernel before 2.6.28?
    >>>
    >>> need to look at the e820 table.
    >>
    >> here is the 32 bit kernel I'm running now (from dmesg )
    >>
    >> Linux version 2.6.25.14 (root@dlang) (gcc version 3.3.6) #1 SMP PREEMPT
    >> Mon Aug 4 18:22:50 PDT 2008
    >> BIOS-provided physical RAM map:
    >> BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
    >> BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
    >> BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
    >> BIOS-e820: 0000000000100000 - 000000004cff0000 (usable)
    >> BIOS-e820: 000000004cff0000 - 000000004cfff000 (ACPI data)
    >> BIOS-e820: 000000004cfff000 - 000000004d000000 (ACPI NVS)
    >> BIOS-e820: 00000000ff780000 - 0000000100000000 (reserved)
    >> BIOS-e820: 0000000100000000 - 0000000180000000 (usable)
    >> Warning only 4GB will be used.
    >> Use a HIGHMEM64G enabled kernel.
    >> 3200MB HIGHMEM available.
    >> 896MB LOWMEM available.
    >> Scan SMP from c0000000 for 1024 bytes.
    >> Scan SMP from c009fc00 for 1024 bytes.
    >> Scan SMP from c00f0000 for 65536 bytes.
    >> found SMP MP-table at [c00ff780] 000ff780
    >> Entering add_active_range(0, 0, 1048576) 0 entries of 256 used
    >> Zone PFN ranges:
    >> DMA 0 -> 4096
    >> Normal 4096 -> 229376
    >> HighMem 229376 -> 1048576
    >> Movable zone start PFN for each node
    >> early_node_map[1] active PFN ranges
    >> 0: 0 -> 1048576
    >> On node 0 totalpages: 1048576
    >> DMA zone: 32 pages used for memmap
    >> DMA zone: 0 pages reserved
    >> DMA zone: 4064 pages, LIFO batch:0
    >> Normal zone: 1760 pages used for memmap
    >> Normal zone: 223520 pages, LIFO batch:31
    >> HighMem zone: 6400 pages used for memmap
    >> HighMem zone: 812800 pages, LIFO batch:31
    >> Movable zone: 0 pages used for memmap
    >
    >
    > BIOS-provided physical RAM map:
    > BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
    > BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
    > BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
    > BIOS-e820: 0000000000100000 - 000000004cff0000 (usable)
    > BIOS-e820: 000000004cff0000 - 000000004cfff000 (ACPI data)
    > BIOS-e820: 000000004cfff000 - 000000004d000000 (ACPI NVS)
    > BIOS-e820: 00000000ff780000 - 0000000100000000 (reserved)
    > BIOS-e820: 0000000100000000 - 0000000180000000 (usable)
    >
    > and for pci mem route: node0 [0, 2g), node1 is [4g, 6g)
    >
    > and e820 said only 3g can be used... [0, 1g), and [4g, 6g)
    >
    > please check if you can change HW memhole setup to 3g instead 2g.
    in BIOS, to get 1g back.

    YH


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