Messages in this thread | | | Date | Thu, 07 Oct 2010 06:46:11 -0700 | From | "H. Peter Anvin" <> | Subject | Re: patch disabling use of PSE on Atom CPUs with a certain erratum |
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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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