Re: patch disabling use of PSE on Atom CPUs with a certain erratum

[H. Peter Anvin]

On 10/07/2010 02:12 AM, Jan Beulich wrote:
> In commit 7a0fc404ae663776e96db43879a0fa24fec1fa3a you
> disable use of PSE, but I wonder how this can take any effect on
> 64-bit CPUs, as they use large pages during early boot already.
> Those pages, when use of PSE gets disabled, will get broken up
> into 4k pages in phys_pmd_init(), thus actually increasing the
> chances that you hit the erratum.
> 
> What am I missing?
> 

Those Atoms don't have 64-bit support.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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