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[Bug 817210] openSUSE 12.3 Domain 0 doesn't boot with i915 graphics controller under Xen with VT-d enabled

https://bugzilla.novell.com/show_bug.cgi?id=817210

https://bugzilla.novell.com/show_bug.cgi?id=817210#c15


--- Comment #15 from Андрей Кольчугин <gadm@xxxxxxxxxxxxxxxx> 2013-06-25
11:12:21 UTC ---
Created an attachment (id=545574)
--> (http://bugzilla.novell.com/attachment.cgi?id=545574)
/proc/iomem on system under analysis

This is 'cat /proc/iomem' under native (i.e. without hypervisor) Linux kernel:

===
host:~ # uname -a
Linux host.domain.tld 3.1.10-1.29-default #1 SMP Fri May 31 20:10:04 UTC 2013
(2529847) x86_64 x86_64 x86_64 GNU/Linux
host:~ #
===

Operating system is openSuSE Linux v12.2 -- kernel boots, uses IOMMU for PCI
DMA:

===
host:~ # dmesg|grep PCI-DMA
[ 0.449642] PCI-DMA: Intel(R) Virtualization Technology for Directed I/O
host:~ #
===

but locks up completely when one tries to use DRM2 (i.e, for example, starts
'glxgears').

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