Does anyone know what these warnings indicate?
<181>2012-12-27T18:49:42.568Z ESX02.jo.local vmkwarning: cpu0:5118)WARNING: IOMMUIntel: 2371: IOMMU context entry dump for 00:02.0 Ctx-Hi = 0x101 Ctx-Lo = 0x113cc7003
<181>2012-12-27T18:49:42.568Z ESX02.jo.local vmkernel: cpu0:5118)WARNING: IOMMUIntel: 2371: IOMMU context entry dump for 00:02.0 Ctx-Hi = 0x101 Ctx-Lo = 0x113cc7003
<181>2012-12-27T18:49:42.568Z ESX02.jo.local vmkwarning: cpu0:5118)WARNING: IOMMUIntel: 2351: IOMMU Unit #0: R/W=R, Device 00:02.0 Faulting addr = 0xa4ab35000 Fault Reason = 0x0c -> Reserved fields set in PTE actively set for Read or Write.
<181>2012-12-27T18:49:42.568Z ESX02.jo.local vmkernel: cpu0:5118)WARNING: IOMMUIntel: 2351: IOMMU Unit #0: R/W=R, Device 00:02.0 Faulting addr = 0xa4ab35000 Fault Reason = 0x0c -> Reserved fields set in PTE actively set for Read or Write.
...
<181>2012-12-27T18:49:42.569Z ESX02.jo.local vmkwarning: cpu0:5254)WARNING: IOMMUIntel: 2351: IOMMU Unit #0: R/W=R, Device 00:02.0 Faulting addr = 0x2529358000 Fault Reason = 0x07 -> Failed to access next level page table.
<181>2012-12-27T18:49:42.569Z ESX02.jo.local vmkernel: cpu0:5254)WARNING: IOMMUIntel: 2351: IOMMU Unit #0: R/W=R, Device 00:02.0 Faulting addr = 0x2529358000 Fault Reason = 0x07 -> Failed to access next level page table.
<181>2012-12-27T18:49:42.569Z ESX02.jo.local vmkwarning: cpu0:5254)WARNING: IOMMUIntel: 2371: IOMMU context entry dump for 00:02.0 Ctx-Hi = 0x101 Ctx-Lo = 0x113cc7003
<181>2012-12-27T18:49:42.569Z ESX02.jo.local vmkernel: cpu0:5254)WARNING: IOMMUIntel: 2371: IOMMU context entry dump for 00:02.0 Ctx-Hi = 0x101 Ctx-Lo = 0x113cc7003
...
They're spewing out at a rate of knots on one of my hosts. Host is currently in maintence mode, but does in fact function correctly, except for an inexplicable hang it had a couple of weeks ago.
It's a Whitebox ESXi 5.1 host, configured 32GB of Non-ECC RAM, a quad core i5, and I did test it with memtest at build time. I also have an idential host which does not log similar entries.
It's probably a hardware error, but I don't get any results when searching google for all or part of the warning, and I would expect that if it's something common like failing memory, others would have posted similar logs online for analysis.. but maybe my I'm falling in to the trap of making false assumptions!
Thanks,
CJ