Re: Bisected regression (Was Re: current -git fails to boot on nehalem-ex)

Yinghai Lu
2009-12-10T22:46:20Z

H. Peter Anvin wrote:
> On 12/10/2009 01:07 PM, Yinghai Lu wrote:
>> it turns out BIOS is using first 64k for mptable without reserve it.
>>
>> so try to find good range for it instead of hard code it.
>> in case some bios try to use that range for sth.
>>
>
> Is this an EFI BIOS? Otherwise, the first 64K would be clobbered anyway
> by the boot loader, so it is invalid anyway... If it is EFI, it is
> theoretically possible.

Jens said acpi=off works with 2.6.32.

can you specify the exact byte position that boot loader could touched?

YH