On Fri, Oct 19, 2012 at 5:02 PM, Suresh Siddha <suresh.b.sid...@intel.com> wrote: > On Fri, 2012-10-19 at 16:36 -0700, H. Peter Anvin wrote: >> On 10/19/2012 04:32 PM, Yinghai Lu wrote: >> > On Fri, Oct 19, 2012 at 4:03 PM, Suresh Siddha >> > <suresh.b.sid...@intel.com> wrote: >> >> On Fri, 2012-10-19 at 13:42 -0700, rrl...@gmail.com wrote: >> >>> Any update? The messages just seem to have stopped months ago. A >> >>> fallback would be nice, I have been booting the kernel with noa2xpic >> >>> for since kernel 3.2, and currently I am working with 3.6.2. >> >>> >> >>> If needed I can try to attempt modifying the patch to include >> >>> fallback, but I am probably not the best person to do it. >> >>> >> >> >> >> Are you referring to this commit that made into the mainline tree >> >> already? >> >> >> >> commit fb209bd891645bb87b9618b724f0b4928e0df3de >> >> Author: Yinghai Lu <ying...@kernel.org> >> >> Date: Wed Dec 21 17:45:17 2011 -0800 >> >> >> >> x86, x2apic: Fallback to xapic when BIOS doesn't setup >> >> interrupt-remapping >> > >> > I think his system has DMAR table and cpu support x2apic, So kernel >> > will switch to x2apic, >> > >> > but somehow BIOS SMI handler has problem with x2apic. should be thinkpad >> > W520? >> > >> >> Right, StinkPad W520 needs a quirk. > > yes. Yinghai, if you remember you had a T420 that didn't show the > problem. And someone in the bugzilla with T420 had the problem. And > their dmidecode is > https://launchpadlibrarian.net/109393850/dmidecode.txt > > What is the difference with your system? Bios I think is the same.
1.37 was working too, i updated it to 1.39 and it is still working. > > Can you see what we should check for in the dmi tables to black list > these systems? Can you post your T420's dmidecode to see the difference. > > https://bugzilla.kernel.org/show_bug.cgi?id=43054 post dmesg and dmidecode to that bug report. Thanks Yinghai -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/