Messages in this thread Patch in this message | | | From | "Woodhouse, David" <> | Subject | Re: hpsa driver bug crack kernel down! | Date | Fri, 11 Apr 2014 09:18:53 +0000 |
| |
On Thu, 2014-04-10 at 09:19 -0700, Davidlohr Bueso wrote: > Attaching a dmesg from one of the kernels that boots. It doesn't appear > to have much of the related information... is there any debug config > option I can enable that might give you more data?
I'd like the contents of /sys/firmware/acpi/tables/DMAR please. And please could you also apply this patch to both the last-working and first-failing kernels and show me the output in both cases?
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index dd576c0..d52ac03 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -683,6 +683,12 @@ static struct intel_iommu *device_to_iommu(int segment, u8 bus, u8 devfn) out: rcu_read_unlock(); + if (iommu) + printk("Device %x:%02x:%02x.%d on IOMMU at %llx\n", segment, bus, + PCI_SLOT(devfn), PCI_FUNC(devfn), drhd->reg_base_addr); + else + printk("Device %x:%02x:%02x.%d on no IOMMU\n", segment, bus, + PCI_SLOT(devfn), PCI_FUNC(devfn)); return iommu; }
-- Sent with Evolution's ActiveSync support.
David Woodhouse Open Source Technology Centre David.Woodhouse@intel.com Intel Corporation
[unhandled content-type:application/x-pkcs7-signature] | |