[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] iommu: mapping reserved region failed - Q35 - VT-DIssue
I meant rebuild xen with debug=y. There is a bunch of tracing in the routines that are trying to setup the context mapping that indicate what is going on including tracing out what device it was dealing with when things failed. Also (as mentioned in another email just sent), we can enhance that logging in these routines to see if the hardware remapping unit is missing for this device or something related. Also again I was curious - it seems the failure trace you reported below was during dom0 boot - is this true? Thanks Ross -----Original Message----- From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Stefan Bauer Sent: Wednesday, October 29, 2008 3:16 PM Cc: xen-devel@xxxxxxxxxxxxxxxxxxx Subject: Re: [Xen-devel] iommu: mapping reserved region failed - Q35 - VT-DIssue Ross Philipson schrieb: > Stefan, > > So those errors happened during booting DOM0 and then you checked xm > dmesg, correct? Then you started a 2k VM and the system reset. Can you > rebuild xen with debug=y, you might get more information about why the > context mapping is failing. We could also put some more trace in there > to see exactly what happens. I only found PCI Backend Debugging in the Xen menue which i activacted, rebuild kernel and did again xm dmesg without further informations. Do i have to activate it additionally? > Can you attach a serial cable and send the output from xen and dom0 to > COM1 or something like that? There may be some relevant information > traced out right before the reset that you are not seeing (it is > probably a crash in xen that is resetting the system). I'll try it if my laptop becomes available (women...) -- Stefan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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