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SubjectRe: [PATCH] x86: trim ram need to check if mtrr is there v3
Yinghai Lu wrote:
> On Friday 25 January 2008 10:55:31 am Jeremy Fitzhardinge wrote:
>
>> Ingo Molnar wrote:
>>
>>> * Yinghai Lu <Yinghai.Lu@Sun.COM> wrote:
>>>
>>>
>>>
>>>> [PATCH] x86: trim ram need to check if mtrr is there v3
>>>>
>>>>
>>>
>>>
>>>>> H. Peter Anvin wrote:
>>>>> Looks like the code doesn't check that the CPU *has* MTRRs...
>>>>>
>>>>>
>>>> so more strict check if mtrr is there really.
>>>> bail out if mtrr all blank when qemu cpu model is used
>>>>
>>>> and check if is AMD as early
>>>> also remove 4G less check, according to hpa.
>>>>
>>>>
>>> thanks, applied. Shouldnt we put in an exception for when there is MTRR
>>> support, but they dont cover anything. Still emit a warning - but
>>> booting up real slow is still better than losing all of RAM and crashing
>>>
>>>
>> The problem is re-occuring for me with current x86.git. Looks like v2
>> did the trick, and v3 is broken...
>>
>
> so the ram size less 4g is way out for your case.
>
> again, can you post /proc/mtrrs with v2 patch?
>

It was empty. But ignore this report; it wasn't against the right
version of x86.git.

J


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