Messages in this thread | | | Subject | Re: MTRR setup failure on Fujitsu Lifebook S761 | From | Suresh Siddha <> | Date | Fri, 26 Aug 2011 16:51:07 -0700 |
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On Fri, 2011-08-26 at 15:24 -0700, H. Peter Anvin wrote: > On 08/26/2011 02:29 PM, Suresh Siddha wrote: > > On Fri, 2011-08-26 at 12:01 -0700, Tony Vroon wrote: > >> On Fri, 2011-08-26 at 09:37 -0700, H. Peter Anvin wrote: > >>> Hm, I don't see any evidence of the MTRR sanitizer running at all... > >> > >> It is almost as if it failed to find an optimal configuration; does that > >> error path not print anything? > > > > MTRR cleanup bails out in mtrr_need_cleanup() if it finds any entry > > other than WB or UC. And the first entry you had was write-protect. > > WP for the BIOS is becoming reasonably common; we need to handle that.
Agree. Ideally in this case PAT should have helped. There must be some other hidden issue that I am trying to understand.
We should address the WP issue nevertheless.
thanks, suresh
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