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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@xxxxxxxx
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