Re: Case: 7454422: Re: Kernel 2.6.21.3 does not work with 8GB of RAM on Intel 965WH motherboards. (FULL DMESG)

Robert Hancock
2007-05-31T04:39:15Z

Parag Warudkar wrote:
> Robert Hancock wrote:
>
>
>> 0-3319MB
>> 4096-8832MB
>>
>> leaving 64MB of memory at the top of RAM uncached. What do you want to
>> bet that something important (kernel code?) is getting loaded there..
>>
>> So essentially it's a BIOS problem, it's not setting up the MTRRs
>> properly in order to map all of RAM as cacheable. As Andi says, complain
>> to Intel.
>>
>
> Could the BADRAM patch be useful for him?
> http://rick.vanrein.org/linux/badram/download.html has 2.6.21 version.
> It says it supports x86_64. May be using this patch he can exclude
> that RAM from being used/accessed?

I think that mem=8832M would work as well, to make the kernel use only
the memory that is marked cacheable. (It looks like this parameter takes
the highest memory address we want the kernel to use, not the highest
memory amount.)

--
Robert Hancock Saskatoon, SK, Canada
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