Re: MPTable can not be high-memory on Linux

[Kevin O'Connor]

On Sun, Feb 22, 2009 at 01:33:35PM -0800, Yinghai Lu wrote:
[...]
> >>>  BIOS-e820: 0000000000090000 - 0000000000100000 (reserved)
> >>>  BIOS-e820: 0000000000100000 - 000000003f7f0000 (usable)
> >>>  BIOS-e820: 000000003f7f0000 - 0000000040000000 (reserved)
[...]
> >>> found SMP MP-table at [c00f9fc0] 000f9fc0
[...]
> 
> that should work for a long time.
> 
> 0xf9fc0 < 1M is quite < max_low_pfn, so wonder why bootmem could panic.

On this machine the mptable "floating" structure is at 0xf9fc0.  It
points to the rest of the table which is in the 0x3f7f0000 area.

Note, that this is on a Coreboot+SeaBIOS machine - so we can change
the bios.  However, the mptable spec does allow for part of the table
to be high memory.

-Kevin
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/