[PATCH 0/1] [Hardy] SRU: Disable 4MB page tables for Atom, work around errata AAE44

Colin Ian King colin.king at canonical.com
Mon Feb 22 10:25:21 UTC 2010


On Mon, 2010-02-22 at 10:12 +0000, Andy Whitcroft wrote:
> On Sun, Feb 21, 2010 at 04:55:31PM +0000, Colin Ian King wrote:
> 
> > One other thing to consider is that probably newer machines have
> > microcode fixes from the BIOS which may be a reason why this a widely
> > observed issue.
> 
> So we are saying we actually expect more up to date machines to not exhibit
> this behaviour as they are actually fixed, that upstream code is much much
> less likely to tickly this due to the mm rewrite, and we are assuming we
> can use the kernel command line as a diagnostics aid for older kit.

Indeed.
> 
> Ok that seems reasonable to me.  Especially we many of us are using Atom
> based kit on later releases without these issue.
> 
> Thanks for the additional data.
> 
> -apw
> 






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