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

[Jan Beulich]

>>> On 07.10.10 at 15:46, "H. Peter Anvin" <hpa@xxxxxxxxx> wrote:
> 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.

That's different from what I found looking around on the web.

Jan

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