Re: [Xen-users] HVM crash system on AMD APU A8-6600K

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Wed, 2013-11-06 at 23:48 +0900, Vitaliy Tomin wrote:
> My system reboots when I trying to start any HVM domU. This problem
> was described   earlier:
> http://lists.xen.org/archives/html/xen-devel/2013-08/msg01395.html
> 
> My system is openSUSE 13.1 RC2  with Xen 4.3.0
> My hardware is
> 
> ASRock  FM2A75 Pro4
> AMD A8-6600K APU
> Gigabyte Radeon 7850
> 8 Gb DDR3 1600Mhz
> 
> I have setup serial console and could provide logs your requested.
> Attached logs from xl dmesg, dom0 dmesg and serial console with:
> loglvl=all iommu=debug,verbose apic_verbosity=debug cpuinfo
> console=com1 com1=115200,8n1,pci

Sadly the logs are not terribly informative, at least not to my
relatively IOMMU ignorant eye :-(

        linux-b52d login: (XEN) AMD-Vi: Share p2m table with iommu: p2m table = 
0x100077
        ===== machine created === 
        (XEN) AMD-Vi: Share p2m table with iommu: p2m table = 0x1c566c
        ==== crash === 
        
There's no further output I take it? (i.e. you've added those ===== tags
without removing anything, sorry have to ask...).

You could try adding "no-sharept" to your iommu command line option. If
that helps it would indicate an issue with the PT sharing option.

Whether or not that option helps I think it would be worth posting to
xen-devel, CC-ing the AMD IOMMU maintainer (Suravee Suthikulpanit
<suravee.suthikulpanit@xxxxxxx) and perhaps the generic IOMMU folks
(Xiantao Zhang <xiantao.zhang@xxxxxxxxx>, Jan Beulich
<jbeulich@xxxxxxxx>)

Ian.


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