Messages in this thread | | | From | Nikunj A Dadhania <> | Subject | Re: Latest tip kernel(3.2-rc1-tip_cf6b3899) fails to boot on x3850x5 machine | Date | Fri, 16 Dec 2011 09:11:19 +0530 |
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On Thu, 15 Dec 2011 12:25:06 -0800, Suresh Siddha <suresh.b.siddha@intel.com> wrote: > On Thu, 2011-12-15 at 11:16 -0800, Yinghai Lu wrote: > > On Wed, Dec 14, 2011 at 11:19 PM, Ingo Molnar <mingo@elte.hu> wrote: > > > > > > * Yinghai Lu <yinghai@kernel.org> wrote: > > > > > >> On Wed, Dec 14, 2011 at 6:24 PM, Nikunj A Dadhania > > >> <nikunj@linux.vnet.ibm.com> wrote: > > >> >> > > >> >> BIOS pre-enabled x2apic, and kernel config does not have x2apic enabled? > > >> > make oldconfig somehow skipped this!! I can see my previous kernel config > > >> > having this enabled. > > >> > > >> looks like recent dmar table related DMAR changing cause that. > > > > > > Which one would that be? Perhaps: > > > > > > iommu: Rename the DMAR and INTR_REMAP config options > > > > > > ? They then need to be fixed if it can be done sanely. > > > > yes. > > Not quite sure if I understand the reported issue. > > If the old config file had CONFIG_X86_X2APIC and CONFIG_INTR_REMAP set, > doing "make oldconfig" on the newer kernel is asking if I want the new > CONFIG_IRQ_REMAP option to be set and if I say yes, then I have both > CONFIG_X86_X2APIC and CONFIG_IRQ_REMAP set and all is well. > > But if I say no, then as expected CONFIG_X86_X2APIC gets disabled (as > IRQ_REMAP is not selected). Yes, my bad, I was expecting this in processor type and features, but that is now in IOMMU.
Thanks, Nikunj
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