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Open Source and information security mailing list archives
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Date: Fri, 26 Aug 2011 16:51:07 -0700 From: Suresh Siddha <suresh.b.siddha@...el.com> To: "H. Peter Anvin" <hpa@...or.com> Cc: Tony Vroon <tony@...x.net>, LKML <linux-kernel@...r.kernel.org>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Tejun Heo <tj@...nel.org>, "yinghai@...nel.org" <yinghai@...nel.org>, venki@...gle.com Subject: Re: MTRR setup failure on Fujitsu Lifebook S761 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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