Re: early exception error

From: Yinghai Lu
Date: Mon Jan 05 2009 - 17:30:32 EST


david@xxxxxxx 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.

YH

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