linux-kernel - Re: IOMMU+DMAR causing NMIs-s (was: 4.7-rc6: NMI in intel

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Date:	Wed, 13 Jul 2016 11:43:03 +0200
From:	Joerg Roedel <joro@...tes.org>
To:	Meelis Roos <mroos@...ux.ee>
Cc:	iommu@...ts.linux-foundation.org,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	David Woodhouse <dwmw2@...radead.org>
Subject: Re: IOMMU+DMAR causing NMIs-s (was: 4.7-rc6: NMI in intel_idle on HP
 Proliant G6)

On Wed, Jul 13, 2016 at 12:16:46PM +0300, Meelis Roos wrote:
> ROM setup settings that might be of interest:
> 
> Advanced memory protection: advanced ecc support
> No-Execute memory protection: enabled
> Intel virtualization technology: enabled
> Intel hyperthreading options: enabled
> Processor core disable: all cored enabled
> Intel turbo boost technology: enabled
> Intel VT-d: enabled
> HP power profile: custom
> HP power regulator: hp dynamic power savings mode (not OS control)
> Intel qpi link power management: enabled
> Minimum processor idle power core state: C6
> Minimum processor idle power package state: C6
> Dynamic power saving mode response: fast
> Collaborative power control: enabled
> MPS table: full table apic
> NMI debug button: enabled
> PCI bus padding options: enabled
> HW prefetcher: enabled
> Adjacent sector prefetch: enabled
> Node interleaving: disabled

AFAICT these settings look normal.

> Nothing in ILO log or integrated management log (IML).

Then I think we need a bisect to make progress here.


	Joerg