Re: [PATCH] x86: trim ram need to check if mtrr is there v3

[Ingo Molnar]

* Yinghai Lu <Yinghai.Lu@xxxxxxx> 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 
...

i also updated the messages, they now go like this:

  WARNING: strange, CPU MTRRs all blank?

and:

  WARNING: BIOS bug: CPU MTRRs don't cover all of memory, losing 45MB of RAM.

	Ingo
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