[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] AMD IOMMU disabled - No Perdev Intremap
On 06/10/2013 15:38, Sander Eikelenboom wrote: > Sunday, October 6, 2013, 3:09:54 PM, you wrote: > >> On 10/06/2013 02:58 PM, Andrew Cooper wrote: >>> On 06/10/2013 13:56, Ferdinand Nölscher wrote: >>>> Hi Sander, >>>> >>>> Thanks for your reply. >>>> >>>> On 10/06/2013 02:10 PM, Sander Eikelenboom wrote: >>>>> Sunday, October 6, 2013, 1:36:33 PM, you wrote: >>>>> >>>>>> Hi! >>>>>>> From other people posting to this list, I know that there has >>>>>>> been a >>>>>> bug related to the issue described in Xen Security Advisory 36 >>>>>> that disables iommu for some AMD users like me. >>>>> What motherboard do you have ? >>>> I have an ASUS M5A99X EVO Rev 1.01 >>>> >>>> >>>>> It depends if it's the north or southbridge ioapic but try using >>>>> the new xen boot parameter: (add it to the xen.gz line in grub) >>>>> >>>>> ivrs_ioapic[0]=00:14.0 >>>>> >>>>> or >>>>> >>>>> ivrs_ioapic[0]=00:00.1 >>>> I tried both, it still fails to enable i/o virtualisation. >>> Can you post a full xl dmesg, booting with iommu=debug,verbose as well? >>> >>> ~Andrew >>> >>> > Ah it seems i got the id's mixed up :-) > > ivrs_ioapic[9]=00:00.1 ivrs_ioapic[10]=00:14.0 > > Should do it i guess .. or should the ioapic handle be in hex .. (then the > last should be ivrs_ioapic[a]=00:14.0 ) > > -- > Sander > > parse_ivrs_ioapic uses simple_strtoul(..., 0), so decimal or 0xa is fine, but 'a' on its own wont be. Seeing as I clearly don't understand how this fix is working, do you mind explaining (as you seem to have worked out the problem) ? ~Andrew _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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