linux-kernel - Re: [git pull] drm main pull for 3.4-rc1

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Date:	Tue, 27 Mar 2012 11:11:46 +0100
From:	Tony Vroon <tony@...x.net>
To:	Dave Airlie <airlied@...ux.ie>,
	DRI mailing list <dri-devel@...ts.freedesktop.org>,
	linux-kernel@...r.kernel.org, Matt Turner <mattst88@...il.com>
Subject: Re: [git pull] drm main pull for 3.4-rc1

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On 27/03/12 11:01, Daniel Vetter wrote:
> Another thing for you to try is booting with
> i915.i915_enable_ppgtt=0 (and vt-d enabled of course).

That appears to be a winner:
adrastea ~ # uname -a
Linux adrastea 3.3.0-06972-ge22057c #1 SMP PREEMPT Tue Mar 27 11:06:46
BST 2012 x86_64 Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz GenuineIntel
GNU/Linux
adrastea ~ # cat /proc/cmdline
auto BOOT_IMAGE=3.3.0-06972-ge2 rw root=0 i915.i915_enable_ppgtt=0
adrastea ~ #

VT-d is enabled, as evidenced by DMAR entries:
adrastea ~ # cat /proc/interrupts
           CPU0       CPU1       CPU2       CPU3
  0:        126          0          0          0  IR-IO-APIC-edge
 timer
  1:          8          0          0          0  IR-IO-APIC-edge
 i8042
  7:          1          0          0          0  IR-IO-APIC-edge
 parport0
  8:         32          0          0          0  IR-IO-APIC-edge
 rtc0
  9:        113          0          0          0  IR-IO-APIC-fasteoi
 acpi
 12:        291          0          0          0  IR-IO-APIC-edge
 i8042
 19:         35          0          0          0  IR-IO-APIC-fasteoi
 mmc0
 22:        613          0          0          0  IR-IO-APIC-fasteoi
 ehci_hcd:usb2
 23:      16052          0          0          0  IR-IO-APIC-fasteoi
 ehci_hcd:usb1
 40:          0          0          0          0  DMAR_MSI-edge      dmar0
 41:          0          0          0          0  DMAR_MSI-edge      dmar1
 42:       1167          0          0          0  IR-PCI-MSI-edge
 i915
 43:       9622          0          0          0  IR-PCI-MSI-edge
 ahci
 44:       1536          0          0          0  IR-PCI-MSI-edge
 eth0
 45:       4577          0          0          0  IR-PCI-MSI-edge
 iwlwifi
 46:          1          0          0          0  IR-PCI-MSI-edge
 xhci_hcd
 47:          0          0          0          0  IR-PCI-MSI-edge
 xhci_hcd
 48:          0          0          0          0  IR-PCI-MSI-edge
 xhci_hcd
 49:          0          0          0          0  IR-PCI-MSI-edge
 xhci_hcd
 50:          0          0          0          0  IR-PCI-MSI-edge
 xhci_hcd
 51:         23          0          0          0  IR-PCI-MSI-edge      mei
 52:       1518          0          0          0  IR-PCI-MSI-edge
 snd_hda_intel
NMI:          0          0          0          0   Non-maskable interrupts
LOC:      17667      13603      17854       6331   Local timer interrupts
SPU:          0          0          0          0   Spurious interrupts
PMI:          0          0          0          0   Performance
monitoring interrupts
IWI:          0          0          0          0   IRQ work interrupts
RTR:          0          0          0          0   APIC ICR read retries
RES:       8771       6319        632        370   Rescheduling interrupts
CAL:         51         59         31         52   Function call
interrupts
TLB:       1363        819       1346        227   TLB shootdowns
TRM:          0          0          0          0   Thermal event
interrupts
THR:          0          0          0          0   Threshold APIC
interrupts
MCE:          0          0          0          0   Machine check
exceptions
MCP:          2          2          2          2   Machine check polls
ERR:          0
MIS:          0

No DMAR complaints in dmesg yet; it would have crashed by now if the
fault was present.

Regards,
- -- 
Tony Vroon
UNIX systems administrator
London Internet Exchange Ltd, Trinity Court, Trinity Street,
Peterborough, PE1 1DA
Registered in England number 3137929
E-Mail: tony@...x.net
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